20.09.2020 - 11:21
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Contact

Department of Human Behavior, Ecology and Culture

Deutscher Platz 6
04103 Leipzig

phone: +49 (0)341 3550 - 315
fax: +49 (0)341 3550 - 333

e-mail: cissewski@eva.mpg.de


Roman Wittig

Senior Scientist (W2) - Research Group Leader

Taï Chimpanzee Project

Max Planck Institute for Evolutionary Anthropology
Departments of Primatology & Human Behavior, Ecology and Culture 
Deutscher Platz 6
D-04103 Leipzig, Germany

phone: +49 341 3550 204
fax: +49 341 3550 299
e-mail: wittig@[>>> Please remove the brackets! <<<]eva.mpg.de

Director, Taï Chimpanzee Project, Côte d'Ivoire

Co-Initiator of the Evolution of Brain Connectivity Project

Member of DFG Researcher Unit: Sociality and Health in Primates (SoHaPi)

Symposium: 40 years of Research at the Taï Chimpanzee Project (29 - 31 May 2019 at MPI EVA, Leipzig, Germany)

Symposium: Brain and Behavioural Evolution in Primates (25 - 29 Sep 2019 at the Centre for Scientific Culture, Erice, Sicily, Italy)

Research Interest
Wittig & Crockford Lab
Curriculum Vitae
Publications
Videos
Press
Positions
Links

Research Interest

Together with my co-PI Dr. Catherine Crockford and my research group, I investigate the costs and benefits of group living and close social bonds in wild chimpanzees (Pan troglodytes) and other non-human primates, in particular bonobos (Pan paniscus), chacma baboons (Papio ursinus) and sooty mangabeys (Cercocebus atys). We examine the underpinning hormonal mechanisms and cognitive adaptations that lead to higher net-benefits and how this translates into life history. We want to understand how individuals benefit from close social bonds and how these bonds affect cooperation, prosocial behaviour and theory of mind.

The ultimate goal of our research is to better understand the evolution of human social organization, cooperation, cognition, culture and communication within an ecological framework by investigating the roots of these adaptations in humans’ closest living relatives.

Follow our research on twitter: @TaiChimpProject

Comparative approach

To reach our goal we compare chimpanzees with other primates on six different levels:

  1. Comparing between four neighboring groups in chimpanzees (Taï, Côte d’Ivoire)
  2. Comparing between two neighboring groups in  bonobos (Kokolopori, DRC)
  3. Comparing between the chimpanzee subspecies (in collaboration: P.t.v. Taï Chimpanzee Project, P.t.t. Loango Ape Project, Gabon, P.t.s. Budongo Conservation Field Station and Ngogo Chimpanzee Project, both Uganda).
  4. Comparing between Pan species (in collaboration: P.t. Budongo, Goualougo, Loango, Ngogo, Taï; P.p. Kokolopori, Lomako, LuiKotale)
  5. Comparing between Pan and Homo (in collaboration: MPI EVA Department for Human Behavioral Ecology and Department for Human Evolution)
  6. Comparing between Hominini (Homo + Pan) and other old world monkeys (e.g. sooty mangabey and chacma baboon)

Innovative methods

We are using field experiments to probe the animal mind (Zuberbühler & Wittig 2011) and established a wide range of experimental techniques with chimpanzees:

  1. Playback experiments: simulating group member communication (e.g. Wittig, Crockford  et al. 2007a,b, 2014; Crockford, Wittig et al. 2015) and violation of expectation paradigms (Crockford, Wittig et al. 2007), with one and two speakers (Crockford, Wittig, et al. 2007), and also with drumming simulations (Wittig, Crockford et al. 2016).
  2. Object presentation: presenting snake models (Crockford, Wittig et al. 2012, 2017) to a variety of species.
  3. Multimodal experiments: combining object presentations with playback stimuli to manipulate the social environment (Crockford, Wittig et al. 2017).

We use non-invasive methods to investigate hormone patterns and have developed methods to relate urinary hormone levels to specific interactions:

  1. Oxytocin and glucocorticoid levels in urine and feces: Hormone analysis from non-invasive samples (Crockford, Wittig et al. 2008, 2013; Wittig, Crockford et al. 2008, 2014)
  2. Event sampling: Relating urinary cortisol (Wittig, Crockford et al. 2015, 2016) and oxytocin levels to specific behaviors (Crockford, Wittig et al. 2013; Wittig, Crcokford et al. 2014; Samuni et al. 2017, 2018, Preis et al. 2018).

We are habituating a fourth neighboring group in Tai and follow all of them every day, collecting focal animal behavior, group composition data, feeding data, vocalizations, GPS track logs and health data.

latest update

Sep 2020

Wittig & Crockford Lab

follow us on twitter or vistit our youtube channel

summer 2020

Members of the Wittig & Crockford Lab (from left to right): Roman Wittig, Sylvain Lemoine, Virgile Manin, Patrick Tkaczynski, Catherine Crockford, Kathrin Kopp, Aisha Bründl, Cedric Girard-Buttoz.

Missing and in the field are: Tatiana Bortolato, Clement Gba (Abidjan), Mathilde Grampp (Tai), Tobias Gräßle (Berlin), Mathieu Malherb (Tai), Christelle Nihouarn (Tai), Kamilla Pleh (Berlin), Prince Vale (Abidjan).

winter 2018 / 2019

Members of the Wittig & Crockford Lab winter 2018/2019 Last row (from left to right): Cedric Girard-Buttoz, Catherine Crockford, Roman Wittig, Alexander Mielke, Prince Vale, Janette Gleiche. Middle row  (from left to right): Sylvain Lemoine, Liran Samuni, Anna Preis, Kayla Kolff, Frauke Olthoff. Front row (from left to right): Patrick Tkaczynski, Erin Wessling, Virgile Manin.

In the field: Tatiana Bortolato, Mathilde Grampp, Mathieu Malherbe, Penelope Carlier

(missing: Clement Gba, Doris Wu, Ruth Sonnweber)

summer 2017

Members of the Wittig & Crockford Lab summer 2017 (starting from left): Janette Gleiche, Frauke Olthoff, Ramona Beuth, Clement Gba, Alexander Mielke, Roman Wittig, Catherine Crockford, Cedric Girard-Buttoz, Doris Wu, Isaac Schamberg (guest), Sylvain Lemoine.

In the field: Pawel Fedurek, Virgile Manin, Kamilla Pleh, Patrick Tkaczynski, Prince Vale

(missing: Therese Löhrich, Anna Preis, Liran Samuni, Ruth Sonnweber)

summer 2016

Members of the Wittig & Crockford Lab summer 2016 (starting from left): Veronika Beeck, Anna Preis, Pawel Fedurek, Patrick Tkaczynski, Catherine Crockford, Roman Wittig, Cedric Girrard-Buttoz, Liran Samuni.

In the field: Alexander Mielke, Therese Löhrrich, Sylvain Lemoine, Clement Gba, Ruth Sonnweber, Doris Wu.

Principle Investigators

Post-doc staff

Aisha Bründl, PhD

Post-doc Evolution of Brain Connectivity

Assessing social cognition and communication development and capacities in wild chimpanzees

Dr. Cedric Girard-Buttoz

Post-doc Pan-Pan Comparison

Assessing cognitve and social differences between Taï Chimapnzees and LuiKotale bonbos

Post-doc Ape Attachment

Dr. Kathrin Kopp

Post-doc Evolution of Brain Connectivity

Assessing cognitive and social plasticity in chimpanzees and bonobos across European Zoos

Patrick Tkaczynski, PhD

Post-doc Ape Attachment

The influence of hormonal variation on social bonding capacities in chimpanzees

PhD Students

Tatiana Bortolato

PhD project: Communicative development of wild chimpanzees

Clement Gba

PhD project: Food competition and sociality in mangabeys

at Centre Suisse de Recherches Scientifiques, Abidjan, Ivory Coast

 

Sylvain Lemoine

PhD project: Intergroup relationships between four neighbouring chimpanzee communities

Mathieu Malbehre

PhD project: Behaviuoral varaition and culture in 4 neighbouring communities of chimpanzees

Virgile Manin

PhD project: Link among sociality, oxytocin, glucocorticoids and health in wild chimpanzees

SoHaPi: DFG funded

Kamilla Pleh

PhD project: Localizing an infective source in the Taï National Park

at Robert Koch Institut, Berlin, Germany

Curriculum Vitae

Name: Roman M. Wittig
Citizenship: German

CV to download
(additional information)

 

Professional Employment

since 2019Max Planck Institute for Evolutionary Anthropology (D), Departments of Primatology & Human Behavior, Ecology and Culture, Scientific Staff
since 2013Head of Max Planck Research Group, Taï Chimpanzee Project, Senior Scientist (W2)
2011 – 2019Max Planck Institute for Evolutionary Anthropology (D), Department of Primatology, Scientific Staff
2008 – 2011University of St Andrews (UK), School of Psychology, Research Fellow
2004 – 2008University of Pennsylvania (USA), Department of Biology, Research Fellow

Scientific posts

since 2018Editorial Board member of American Journal of Primatology
2014 - 2017Member of the Human Sciences Section of the Scientific Council of the Max Planck Society

Education

2004University of Leipzig (D) & Max Planck Institute for Evolutionary Anthropology (D), Dr. rer. nat. in Biology (Supervisor: Christophe Boesch, Co-referees: Frans de Waal, Peter Kappeler)
1996University of Bielefeld (D), Diplom in Biology (Supervisor: Hubert Hendrichs, Co-referee: Jürgen Döhl)

Field Experience

Since 2013Director of the Taï Chimpanzee Project (Côte d’Ivoire)
Full responsibility for the Taï Chimpanzee Project in Côte d’Ivoire.
2008 – 2010Budongo Conservation Field Station, Budongo Forest (Uganda), Assistant Director
Studying the chimpanzees (Pan troglodytes schweinfurthii) of the Sonso community for 2½ years, conducting field experiments (playback and object presentation), behavioural observations, urine collection for hormonal analysis and fecal collection for genetic analysis.
2004 – 2005Babooncamp, Okavango Delta (Botswana), Post-doc Researcher
Studying Chacma baboons (Papio hamadryas ursinus) at the long-term study site of Dorothy Cheney and Robert Seyfarth for 1½ years, conducting playback experiments and fecal collection for hormonal analysis.
1996 – 1999Taï Chimpanzee Project, Taï National Park (Côte d’Ivoire), Camp Manager
Studying the chimpanzees (Pan troglodytes verus) of the North community for 3 years, conducting behavioural observations for my PhD thesis.

Teaching Experience

starting 2019

NEW international Master course: Integrative Biology, University Leipzig Block module: Cognitive Ethology in Primates

since 2014

Lecturer, Master of Science in Biology, University of Leipzig                Course: Bridge Seminar - Social intelligence

since 2011Coordinator & lecturer, International Max Planck Research School for Human Origins Course: Comparative and Molecular Primatology
2011Substitute lecturer, School of Psychology, University of St Andrews
Module: Evolutionary and Comparative Psychology

Invited Talks (selection)

2018Duke University, Durham, NC (USA), Department for Evolutionary Anthropology, Seminar Hare Group
 Naturhistorisches Museum, Wien (A), Talk Series in relation to the exhibition: War. 
2017African Primatological Society, Plenary Keynote at the Inaugural Conference in Abidjan / Bingerville (CIV)
 Georg August University & German Primate Center, Göttingen (D), Colloquium Series: Understanding Social Relationships.
2016Lincoln Park Zoo, Chicago (USA), Keynote on Social Living - Chimpanzee in Context, 'Understanding Chimpanzees' Symposium Series
 International Society for Anthrozoology, Plenary Keynote - ISAZ Meeting 2016, Barcelona (E)
2015Wuppertaler Zoogespräche (D), Bergische Universität Wuppertal, Philosophisches Seminar
 Konrad Lorenz Institut für Vergleichende Verhaltensforschung, Wien (A), Wilhelminenberg Seminar
 

Université de Neuchâtel (CH), Department of Comparative Cognition, Group Seminar

2014Society for Tropical Ecology, Plenary Keynote - Conference of the Society for Tropical Ecology, Munich (D)

2013

Lorentz Center Leiden (NL), Workshop: Obstacles and Catlysts of Peaceful Behavior

2012Université de Rennes (F), Department of Animal and Human Ethology, Ethos Seminar
2011 University of Stirling (UK), School of Nature Sciences, Behavioural Ecology Research Group Seminar
 University of Zürich (CH), Institute for Evolutionary Biology and Environmental Studies, Behaviour Ecology Environment and Evolution Seminar.
2010Wissenschaftskolleg zu Berlin (D), House Seminar
2007Lincoln Park Zoo, Chicago (USA), Chimpanzee Mind Conference, 'Understanding Chimpanzees' Symposium Series
2006Emory University (USA),Yerkes Primate Research Centre, Living Links Colloquium
 Harvard University (USA), Department of Anthropology, Anthropology Colloquium

Professional & Public Services

Ad-hoc reviewer

  • Journals: American Journal of Primatology, Animal Behaviour, Behavioral Ecology and Sociobiology, Behaviour, Biology Letter, Current Biology, Hormones & Behavior, Human Evolution, International Journal of Primatology, Naturwissenschaften, Primates, Proceedings of the Royal Society London B, Science.
  • Grant Bodies: Leakey Foundation, Wenner-Gren Foundation

Conference organisation

  • Symposium: 40 Years of Taï Chimpanzee Project, 29 - 31 May 2019, MPI EVA, Germany.
  • XIV Conference of the Gesellschaft für Primatologie, 11 - 13 Feb 2015, MPI EVA & University of Leipzig, Germany
  • Great Ape Health Workshop – International Conference on the Health Threat for Great Apes in Research and Tourist Sites, 21 – 24 Aug 2009, LAICO Lake Victoria Hotel, Entebbe, Uganda.

Consulting (selection)

  • Consultant for the exhibition 'WAR - KRIEG'. Landesmuseum für Vorgeschichte Halle, Halle (D).
  • Consultant on baboon behaviour for the BBC Natural History Series ‘Planet Earth’ (2005-2007).
  • Consultant on ape behaviour and evolution for the exhibition ‘Mensch und Tier: eine paradoxe Beziehung’ (2002-2003). Deutsches Hygienemuseum, Dresden (D).
  • Consultant on chimpanzee conservation for the exhibition ‘Gorillas in the soup’ (2000-2001). Bushmeat crisis campaign of the European Association of Zoos and Aquaria (EU).

Professional Membership

1998Ethologische Gesellschaft e.V.
1995International Primatological Society & Deutsche Gesellschaft für Primatologie

Honors and Awards

2018Member and Co-initiator of the Max Planck Synergy Research Group Evolution of Brain Connectivuty (Max Planck Society)
2016Nominated participation in the German American Frontiers of Science Symposium (Humboldt-Foundation and National Science Foundation USA)
2015Invitation to join the DFG Researcher Consortium: The oxytocin system of the socio-emotional brain (invited by Dr. Valary Grinavich, University of Heidelberg, GER)
2014Member of the DFG Researcher Consortium: Sociality and Health in Primates (SoHaPi)
2012Young Investigator award of the Society of Behavioral Neuroendocrinology (jointly with Catherine Crockford)
2010Invited Guest of the Wissenschaftskolleg zu Berlin
2006Research Fellow of the German Science Foundation (DFG) for two years
2004Conference Grant of the German Science Foundation (DFG)

 

Research Grant Awards

2019PI on Research Grant: Presidential Funds of the Max Planck Society: Evolution of Brain Connectivity (total: € 1.627.000)
2017PI on Research Grant: Deutsche Forschungsgemeinschaft - SOHAPI in collaboration with RKI (total: € 450.000)
2016Co-PI to ERC starting grant Ape Attachment of C. Crockford (total: € 1.500.000)
2015PI on Research Grant: Wenner-Gren Foundation in collaboration with A. Mielke & C. Crockford: US$ 6000
2014Co-PI on Research Grant: Deutsche Forschungsgemeinschaft - SOHAPI in collaboration with RKI: € 230.000
2013Co-PI Conservation Grant: European Association of Zoos and Aquaria in collaboration with RKI, WWF & Zoo Leipzig: € 21.000
2013PI on Research Grant: Leakey Foundation in collaboration with A. Preiss & C. Crockford: US$ 12.800
2009Co-PI on Research Grant: Wenner-Gren Foundation together with C. Crockford, T. Deschner, T. Ziegler & K. Zuberbuhler: US$ 25.000
2009Co-PI on Research Grant: Leakey Foundation in collaboration with C. Crockford, T. Deschner & K. Zuberbuhler: US$ 22.500
2006Post-doc fellow grant: Deutsche Forschungsgemeinschaft

 

Publications

Check out publications of Roman Wittig on Research Gate

Quarantine & Hygiene rules of TCP are the IUCN best practice guidelines (download: Wittig & Leendertz 2014)

Books

The Taï Chimpanzee Project (Taï National Park, Côte d'Ivoire) has yielded unprecedented insights into the nature of cooperation, cognition, and culture in one of our closest living relatives. Founded in 1979 by Christophe and Hedwige Boesch, the project has entered its 40th year of continuous research. Alongside other famous long-term chimpanzee study sites at Gombe and Mahale in East Africa, the tireless work of the team at Taï has contributed to the fields of behavioural ecology and anthropology as well as improving public awareness of the urgent need this already critical endangered species. Encompassing important research topics including chimpanzeeecology, reproductive behaviour, tool use, culture, communication, cognition, and conservation, this book provides an engaging account of how Taï Chimpanzees are adapted to African jungle life and how they developed unique forms of cooperation with less violence, regular adoptions and complex cultural differences between groups.

Last update: September 20th, 2020

2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2005 | 2003 | 2002 | 1996 |

In press

Behringer, V., Preis, A., Wu, D., Crockford, C., Leendertz, S. A. J., Wittig, R. M., & Deschner, T. (in press). Urinary cortisol increases during a respiratory outbreak in wild chimpanzees. Frontiers in Veterinary Science.
Crockford, C., Samuni, L., Vigilant, L., & Wittig, R. M. (in press). Post-weaning maternal care increases male chimpanzee reproductive success. Sciences Advances.
Girard-Buttoz, C., Surbeck, M., Samuni, L., Boesch, C., Fruth, B., Crockford, C., Hohmann, G., & Wittig, R. M. (in press). Variable use of polyadic grooming and its effect on access to social partners in wild chimpanzees and bonobos. Animal Behavior.
Junker, J., Petrovan, S. O., Arroyo-Rodríguez, V., Boonratana, R., Byler, D., Chapman, C. A., Chetry, D., Cheyne, S. M., Cornejo, F. M., Cortés-Ortiz, L., Cowlishaw, G., Christie, A., Crockford, C., de la Torre, S., de Melo, F. R., Fan, P., Grueter, C. C., Guzmán-Caro, D. C., Heymann, E. W., Herbinger, I., Hoang, M. D., Horwich, R. H., Humle, T., Ikemeh, R. A., Imong, I. S., Jerusalinsky, L., Johnson, S. E., Kappeler, P. M., Kierulff, M. C. M., Koné, I., Kormos, R., Le, K. Q., Li, B. G., Marshall, A. J., Meijaard, E., Mittermeier, R. A., Muroyama, Y., Neugebauer, E., Orth, L., Palacios, E., Papworth, S. K., Plumptre, A. J., Rawson, B. M., Refisch, J., Ratsimbazafy, J., Roos, C., Setchell, J. M., Smith, R. K., Sop, T., Schwitzer, C., Slater, K., Strum, S. C., Sutherland, W. J., Talebi, M., Wallis, J., Wich, S., Williamson, E. A., Wittig, R. M., & Kühl, H. S. (in press). Severe Lack of Evidence Limits Effective Conservation of the World’s Primates. Bioscience.
Wittig, R. M., Mielke, A., Lester, J. D., & Crockford, C. (in press). Endurance and flexibility of close social relationships: Comparing chimpanzees (Pan troglodytes verus) and sooty mangabeys (Cercocebusatys atys). In L. M. Hopper, & S. R. Ross (Eds.), Chimpanzees in context: A comparative perspective on chimpanzee behavior, cognition, conservation, and welfare (pp.?). Chicago: The University of Chicago Press.

2020

Eichner, C., Paquette, M., Mildner, T., Schlumm, T., Pleh, K., Crockford, C., Wittig, R. M., Möller, H. E., Friederici, A. D., & Anwender, A. (2020). lncreased Sensitivity and Signal-to-Noise Ratio in Diffusion-Weighted MRI using Multi-Echo Acquisitions. NeuroImage,221: 117172.
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Kalan, A. K., Kulik, L., Arandjelovic, M., Boesch, C., Haas, F., Dieguez, P., Barratt, C. D., Abwe, E. E., Agbor, A., Angedakin, S., Aubert, F., Ayimisin, A. E., Bailey, E., Bessone, M., Brazzola, G., Buh, V. E., Chancellor, R., Cohen, H., Coupland, C., Curran, B., Danquah, E., Deschner, T., Dowd, D., Eno-Nku, M., Fay, M. J., Goedmakers, A., Granjon, A.-C., Head, J., Hedwig, D., Hermans, V., Jeffery, K. J., Jones, S., Junker, J., Kadam, P., Kambi, M., Kienast, I., Kujirakwinja, D., Langergraber, K. E., Lapuente, J., Larson, B., Lee, K., Leinert, V., Llana, M., Marrocoli, S., Meier, A., Morgan, B., Morgan, D., Neil, E., Nicholl, S., Normand, E., Ormsby, L. J., Pacheco, L., Piel, A., Preece, J., Robbins, M. M., Rundus, A., Sanz, C., Sommer, V., Stewart, F., Tagg, N., Tennie, C., Vergnes, V., Welsh, A., Wessling, E. G., Willie, J., Wittig, R. M., Yuh, Y. G., Zuberbühler, K., & Kühl, H. S. (2020). Environmental variability supports chimpanzee behavioural diversity. Nature Communications,11(1): 4451.
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Oelze, V. M., Wittig, R. M., Lemoine, S., Kühl, H. S., & Boesch, C. (2020). How isotopic signatures relate to meat consumption in wild chimpanzees: A critical reference study from Taï National Park, Côte d’Ivoire. Journal of Human Evolution,146: 102817.
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Tkaczynski, P. J., Mielke, A., Samuni, L., Preis, A., Wittig, R. M., & Crockford, C. (2020). Long-term repeatability in social behaviour suggests stable social phenotypes in wild chimpanzees. Royal Society Open Science,7: 200454.
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Mielke, A., Preis, A., Samuni, L., Gogarten, J. F., Lester, J. D., Crockford, C., & Wittig, R. M. (2020). Consistency of social interactions in sooty mangabeys and chimpanzees. bioRxiv.
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Girard-Buttoz, C., Surbeck, M., Samuni, L., Tkaczynski, P. J., Boesch, C., Fruth, B., Wittig, R. M., Hohmann, G., & Crockford, C. (2020). Information transfer efficiency differs in wild chimpanzees and bonobos, but not social cognition. Proceedings of the Royal Society B: Biological Sciences,287(1929): 20200877.
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Barratt, C. D., Lester, J. D., Gratton, P., Onstein, R. E., Kalan, A. K., McCarthy, M., Bocksberger, G., White, L. C., Vigilant, L., Dieguez, P., Abdulai, B., Aebischer, T., Agbor, A., Assumang, A. K., Bailey, E., Bessone, M., Buys, B., Carvalho, J. S., Chancellor, R., Cohen, H., Danquah, E., Deschner, T., Dongmo, Z. N., Doumbé, O. A., Dupain, J., Duvall, C. S., Eno-Nku, M., Etoga, G., Galat-Luong, A., Garriga, R., Gatti, S., Ghiurghi, A., Goedmakers, A., Granjon, A.-C., Hakizimana, D., Haydar, N., Head, J. S., Hedwig, D., Herbinger, I., Hermans, V., Jones, S., Junker, J., Kadam, P., Kambi, M., Kienast, I., Kouakou, C. Y., N’Goran, K. P., Langergraber, K. E., Lapuente, J., Laudisoit, A., Lee, K., Maisels, F., Moore, D., Morgan, B., Morgan, D., Neil, E., Nicholl, S., Nkembi, L., Ntongho, A., Orbell, C., Ormsby, L. J., Pacheco, L., Piel, A. K., Pintea, L., Plumptre, A. J., Rundus, A., Sanz, C., Sommer, V., Sop, T., Stewart, F. A., Sunderland-Groves, J., Tagg, N., Todd, A., Ton, E., van Schijndel, J., VanLeeuwe, H., Vendras, E., Welsh, A., Wenceslau, J. F. C., Wessling, E. G., Willie, J., Wittig, R. M., Yoshihiro, N., Yuh, Y. G., Yurkiw, K., Boesch, C., Arandjelovic, M., & Kühl, H. S. (2020). Late Quaternary habitat suitability models for chimpanzees (Pan troglodytes) since the Last Interglacial (120,000 BP). bioRxiv.
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Bründl, A. C., Tkaczynski, P. J., Kohou, G., Boesch, C., Wittig, R. M., & Crockford, C. (2020). Systematic mapping of developmental milestones in wild chimpanzees (advance online). Developmental Science, e12988.
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Lemoine, S., Boesch, C., Preis, A., Samuni, L., Crockford, C. ǂ., & Wittig, R. M. (2020). Group dominance increases territory size and reduces neighbor pressure in wild chimpanzees. Royal Society Open Science,7(5): 200577.
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Patrono, L. V., Pléh, K., Samuni, L., Ulrich, M., Röthemeier, C., Sachse, A., Muschter, S., Nitsche, A., Couacy-Hymann, E., Boesch, C., Wittig, R. M., Calvignac-Spencer, S., & Leendertz, F. H. (2020). Monkeypox virus emergence in wild chimpanzees reveals distinct clinical outcomes and viral diversity (advance online). Nature Microbiology.
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Fedurek, P., Tkaczynski, P., Asiimwe, C., Hobaiter, C., Samuni, L., Lowe, A. E., Dijrian, A. G., Zuberbühler, K., Wittig, R. M., & Crockford, C. (2020). Maternal cannibalism in two populations of wild chimpanzees. Primates,61, 181-187.
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Gillespie, T. R., Leendertz, F. H., The Great Ape Health Consortium, including authors, Deschner, T., Robbins, M. M., Wittig, R. M., & & others (2020). COVID-19: protect great apes during human pandemics. Nature,579, 497-497.
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Mielke, A., Crockford, C. ǂ., & Wittig, R. M. (2020). Predictability and variability of association patterns in sooty mangabeys. Behavioral Ecology and Sociobiology,74: 46.
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Fröhlich, M., Müller, G., Zeiträg, C., Wittig, R. M., & Pika, S. (2020). Begging and social tolerance: Food solicitation tactics in young chimpanzees (Pan troglodytes) in the wild. Evolution and Human Behavior,41(2), 126-135.
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Stuhlträger, J., Schulz-Kornas, E., Kullmer, O., Janocha, M., Wittig, R. M., & Kupczik, K. (2020). Motif and occlusal fingerprint analyses reveal sex-specific molar wear patterns in western chimpanzees. American Journal of Physical Anthropology,171(S69), 276-276.
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Lemoine, S., Preis, A., Samuni, L., Boesch, C., Crockford, C. ǂ., & Wittig, R. M. (2020). Between-group competition impacts reproductive success in wild chimpanzees. Current Biology,30(2), 312-318.
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Samuni, L., Tkaczynski, P. J., Deschner, T., Löhrrich, T., Wittig, R. M., & Crockford, C. (2020). Maternal effects on offspring growth indicate post-weaning juvenile dependence in chimpanzees (Pan troglodytes verus). Frontiers in Zoology,17: 1.
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Girard-Buttoz, C., Surbeck, M., Samuni, L., Tkaczynski, P. J., Boesch, C., Fruth, B., Wittig, R. M., Hohmann, G., & Crockford, C. (2020). Chimpanzees outperform bonobos at an experimental cooperative task in the wild: Information transfer around a stationary danger. Folia Primatologica,91(3), 255-256.
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Gogarten, J. F., Calvignac-Spencer, S., Nunn, C. L., Ulrich, M., Saiepour, N., Nielsen, H. V., Deschner, T., Fichtel, C., Kappeler, P. M., Knauf, S., Müller-Klein, N., Ostner, J., Robbins, M. M., Sangmaneedet, S., Schülke, O., Surbeck, M., Wittig, R. M., Sliwa, A., Strube, C., Leendertz, F. H., Roos, C., & Noll, A. (2020). Metabarcoding of eukaryotic parasite communities describes diverse parasite assemblages spanning the primate phylogeny. Molecular Ecology,20(1), 204-215.
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Lester, J. D., Vigilant, L., Gratton, P., McCarthy, M., Barratt, C. D., Boesch, C., Kühl, H. S., Dieguez, P., Aebischer, T., Agbor, A., Varona, P. Á., Angedakin, S., Assumang, A. K., Aubertf, F., Ayimisin, A. E., Bailey, E., Barubiyo, D., Bessone, M., Bonnet, M., Brazzola, G., Chancellor, R., Cipoletta, C., Cohen, H., Corogenes, K., Coupland, C., Curran, B., Danquah, E., Deschner, T., Dierks, K., Dilambaka, E., Dowd, D., Dunn, A., Dupain, J., Egbe, V. E., Goedmakers, A., Granjon, A.-C., Hedwig, D., Hermans, V., Imong, I., Jeffery, K. J., Jones, S., Junker, J., Kadam, P., Kaiser, M., Kalan, A. K., Kambere, M., Kambere, M., Kienast, I., Kujirakwinja, D., Langergraber, K. E., Lapeyre, V., Lapuente, J., Larson, B., Lee, K., Leinert, V., Llana, M., Manasseh, E.-N., Maretti, G., Marrocoli, S., Martín, R., Meier, A., Morgan, D., Mulindahabi, F., Murai, M., Neil, E., Nicholl, S., Nixon, S., Niyigaba, P., Normand, E., Orbell, C., Ormsby, L. J., Pacheco, L., Piel, A., Preece, J., Regnaut, S., Robbins, A. M., Sanz, C., Sciaky, L., Sommer, V., Stewart, F., Tagg, N., Telfer, P., Ton, E., van Schijndel, J., Vanleeuwe, H., Vergnes, V., Vyalengerera, M. K., Wessling, E. G., Willie, J., Wittig, R. M., Yuh, Y. G., Yurkiw, K., Zuberbühler, K., & Arandjelovic, M. (2020). Chimpanzee biogeography inferred from genetic diversity and effective migration. Folia Primatologica,91(3), 264-265.
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Riedel, J., Polansky, L., Wittig, R. M., & Boesch, C. (2020). Social rank overrides environmental and community fluctuations in determining meat access by female chimpanzees in the Taï National Park, Côte d’Ivoire. PeerJ,8: e8283.
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Tkaczynski, P. J., Behringer, V., Ackermann, C., Fedrurek, P., Fruht, B., Girard-Buttoz, C., Hobaiter, C., Lee, S., Löhrich, T., Preis, A., Samuni, L., Zommers, Z., Zuberbühler, K., Deschner, T., Wittig, R. M., Hohmann, G., & Crockford, C. (2020). Patterns of urinary cortisol levels during ontogeny appear population- rather than species-specific in wild chimpanzees and bonobos. Journal of Human Evolution,147: 102869.
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Tkaczynski, P. J., Samuni, L., Sonnweber, R., Deschner, T., Vigilant, L., Löhrrich, T., Wittig, R. M., & Crockford, C. (2020). Mum’s the word: The lasting impacts of maternal loss on offspring survival, growth and reproductive success in wild chimpanzees. Folia Primatologica,91(3), 276-277.
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2019

Samuni, L., Mielke, A., Preis, A., Crockford, C. ǂ., & Wittig, R. M. (2019). Intergroup competition enhances chimpanzee (Pan troglodytes verus) in-group cohesion. International Journal of Primatology,41, 342-362.
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Mielke, A., Crockford, C. *., & Wittig, R. M. (2019). Snake alarm calls as a public good in sooty mangabeys. Animal Behaviour,158, 201-209.
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Surbeck, M., Boesch, C., Girard-Buttoz, C., Crockford, C., Hohmann, G., & Wittig, R. M. (2019). Erratum: Comparison of male conflict behavior in chimpanzees (Pan troglodytes) and bonobos (Pan paniscus), with specific regard to coalition and post-conflict behavior. American Journal of Primatology,81(13): e23075.
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Boesch, C., & Wittig, R. M. (2019).The chimpanzees of the Taï forest: 40 years of research. Cambridge University Press.
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Gone Bi, Z. B., & Wittig, R. M. (2019). Long-term diet of the chimpanzees (Pan troglodytes verus) in Taï National Park: inter-annual variations in consumption of some key food sources. In C. Boesch, & R. M. Wittig (Eds.), The chimpanzees of the Taï forest: 40 years of research (pp. 242-260). Cambridge: Cambridge University Press.
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Lemoine, S., Crockford, C., & Wittig, R. M. (2019). Spatial integration of unusually high numbers of immigrant females into the south group further support for the bisexually-bonded model in Tai chimpanzees. In C. Boesch, & R. M. Wittig (Eds.), The chimpanzees of the Taï forest: 40 years of research (pp. 159-177). Cambridge University Press.
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Mielke, A., Crockford, C., & Wittig, R. M. (2019). Rank changes in female chimpanzees in Tai National Park. In C. Boesch, & R. M. Wittig (Eds.), The chimpanzees of the Taï forest: 40 years of research (pp. 290-300). Cambridge University Press.
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Preis, A., Samuni, L., Deschner, T., Crockford, C., & Wittig, R. M. (2019). Group specific social dynamics affect urinary ocytocin levels in Tai male chimpanzees. In C. Boesch, & R. M. Wittig (Eds.), The chimpanzees of the Taï forest: 40 years of research (pp. 339-365). Cambridge: Cambridge University Press.
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Samuni, L., Wittig, R. M., & Crockford, C. (2019). Adoption in the Tai chimpanzees costs, benefits, and strong social relationships. In C. Boesch, & R. M. Wittig (Eds.), The chimpanzees of the Taï forest: 40 years of research (pp. 141-158). Cambridge: Cambridge University Press.
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Wittig, R. M., & Boesch, C. (2019). Demography and life history of five chimpanzee communities in Taï National Park. In The chimpanzees of the Taï forest: 40 years of research (pp. 125-140). Cambridge University Press.
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Wittig, R. M., & Boesch, C. (2019). Observation protocol and long-term data collection in Taï. In C. Boesch, & R. M. Wittig (Eds.), The chimpanzees of the Taï forest: 40 years of research (pp. 44-57). Cambridge: Cambridge University Press.
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Maibach, V., Langergraber, K., Leendertz, F. H., Wittig, R. M., & Vigilant, L. (2019). Differences in MHC-B diversity and KIR epitopes in two populations of wild chimpanzees. Immunogenetics,71(10), 617-633.
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McCarthy, M., Despres-Einspenner, M.-L., Farine, D. R., Samuni, L., Angedakin, S., Arandjelovic, M., Boesch, C., Dieguez, P., Havercamp, K., Knight, A., Langergraber, K. E., Wittig, R. M., & Kühl, H. S. (2019). Camera traps provide a robust alternative to direct observations for constructing social networks of wild chimpanzees. Animal Behaviour,157, 227-238.
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Gogarten, J. F., Düx, A., Mubemba, B., Pléh, K., Hoffmann, C., Mielke, A., Müller-Tiburtius, J., Sachse, A., Wittig, R. M., Calvignac-Spencer, S., & Leendertz, F. H. (2019). Tropical rainforest flies carrying pathogens form stable associations with social nonhuman primates. Molecular Ecology,28(18), 4242-4258.
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Stuhlträger, J., Schulz-Kornas, E., Wittig, R. M., & Kupczik, K. (2019). Ontogenetic dietary shifts and microscopic tooth wear in western chimpanzees. Frontiers in Ecology and Evolution,7: 298.
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Estienne, V., Cohen, H., Wittig, R. M., & Boesch, C. (2019). Maternal influence on the development of nut-cracking skills in the chimpanzees of the Taï forest, Côte d'Ivoire (Pan troglodytes verus). American Journal of Primatology,81(7): e23022.
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Eichner, C., Kirilina, E., Paquette, M., Mildner, T., Schlumm, T., Pine, K., Müller-Axt, C., Lipp, I., Möller, H. E., Gallardo, G., Wittig, R. M., Crockford, C., Weiskopf, N., Friederici, A. D., & Anwander, A. (2019). Evolution of white matter connectivity and cortical myelination in hominoids: Wild chimpanzee pilot. In Proceedings of the 25th Annual Meeting of the Organization for Human Brain Mapping (OHBM).
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Samuni, L., Preis, A., Deschner, T., Wittig, R. M., & Crockford, C. (2019). Cortisol and oxytocin show independent activity during chimpanzee intergroup conflict. Psychoneuroendocrinology,104, 165-173.
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Behringer, V., Stevens, J. M. G., Wittig, R. M., Crockford, C., Zuberbühler, K., Leendertz, F. H., & Deschner, T. (2019). Elevated neopterin levels in wild, healthy chimpanzees indicate constant investment in unspecific immune system. BMC Zoology,4: 2.
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Schulz-Kornas, E., Stuhlträger, J., Clauss, M., Wittig, R. M., & Kupczik, K. (2019). Dust affects chewing efficiency and tooth waer in forest dwelling Western chimpanzees (Pan troglodytes verus). American Journal of Physical Anthropology,169(1), 66-77.
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Preis, A., Samuni, L., Deschner, T., Crockford, C. ǂ., & Wittig, R. M. (2019). Urinary cortisol, aggression, dominance and competition in wild, West African male chimpanzees. Frontiers im Ecology and Evolution,7: 107.
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Kalan, A. K., Hohmann, G., Arandjelovic, M., Boesch, C., McCarthy, M., Agbor, A., Angedakin, S., Bailey, E., Wilungula Balongelwa, C., Bessone, M., Bocksberger, G., Coxe, S. J., Deschner, T., Despres-Einspenner, M.-L., Dieguez, P., Fruth, B., Herbinger, I., Granjon, A.-C., Head, J. S., Kablan, Y. A., Langergraber, K. E., Lotana Lokasola, A., Maretti, G., Marrocoli, S., Mbende, M., Moustgaard, J., N’Goran, P. K., Robbins, M. M., van Schijndel, J., Sommer, V., Surbeck, M., Tagg, N., Willie, J., Wittig, R. M., & Kühl, H. S. (2019). Novelty response of wild African apes to camera traps. Current Biology,29(7), 1211-1217.
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Kühl, H. S., Boesch, C., Kulik, L., Haas, F., Arandjelovic, M., Dieguez, P., Bocksberger, G., McElreath, M. B., Agbor, A., Angedakin, S., Ayimisin, A. E., Bailey, E., Barubiyo, D., Bessone, M., Brazzola, G., Chancellor, R., Cohen, H., Coupland, C., Danquah, E., Deschner, T., Dowd, D., Dunn, A., Egbe, V. E., Eshuis, H., Goedmakers, A., Granjon, A.-C., Head, J. S., Hedwig, D., Hermans, V., Imong, I., Jeffery, K. J., Jones, S., Junker, J., Kadam, P., Kambere, M., Kambi, M., Kienast, I., Kujirakwinja, D., Langergraber, K., Lapuente, J., Larson, B., Lee, K., Leinert, V., Llana, M., Maretti, G., Marrocoli, S., Martin, R., Mbi, T. J., Meier, A., Morgan, B., Morgan, D., Mulindahabi, F., Murai, M., Neil, E., Niyigaba, P., Ormsby, L. J., Orume, R., Pacheco, L., Piel, A., Preece, J., Regnaut, S., Rundus, A., Sanz, C., van Schijndel, J., Sommer, V., Stewart, F., Tagg, N., Vendras, E., Vergnes, V., Welsh, A., Wessling, E. G., Willie, J., Wittig, R. M., Yuh, Y. G., Yurkiw, K., Zuberbuehler, K., & Kalan, A. K. (2019). Human impact erodes chimpanzee behavioral diversity. Science,363(6434), 1453-1455.
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Schulz-Kornas, E., Stuhlträger, J., Clauss, M., Wittig, R. M., & Kupczik, K. (2019). Periodical increase of dust load reduces chewing efficiency in forest dwelling Western chimpanzees (Pan troglodytes verus). American Journal of Physical Anthropology,168(S68), 221-221.
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Stuhlträger, J., Schulz-Kornas, E., Wittig, R. M., Kullmer, O., & Kupczik, K. (2019). Do abrasion and attrition leave the same trace? A microscopic tooth wear study on chimpanzee molar wear facets. American Journal of Physical Anthropology,168(S68), 241-241.
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Fröhlich, M., Wittig, R. M., & Pika, S. (2019). The ontogeny of intentional communication in chimpanzees in the wild. Developmental Science,22(1): e12716.
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Kühl, H. S., Boesch, C., Kulik, L., Haas, F., Arandjelovic, M., Dieguez, P., Bocksberger, G., Agbor, A., Angedakin, S., Ayimisin, A. E., Bessone, M., Brazzola, G., Chancellor, R., Cohen, H., Coupland, C., Danquah, E., Deschner, T., Dowd, D., Goedmakers, A., Granjon, A.-C., Head, J. S., Hedwig, D., Hermans, V., Jones, S., Junker, J., Langergraber, K. E., Lapuente, J., Lee, K., Llana, M., Marrocoli, S., Martin, R., McCarthy, M., Meier, A., Morgan, D., Murai, M., Neil, E., Normand, E., Ormsby, L. J., Pacheco, L., Piel, A., Regnaut, S., Rundus, A., Sanz, C., Stewart, F., Tagg, N., Vergnes, V., Welsh, A., Wessling, E. G., Willie, J., Wittig, R. M., Yuh, Y. G., Yuh, Y. G., Yurkiw, K., & Kalan, A. K. (2019). Inclusive chimpanzee conservation—Response. Science,364(6445), 1040-1041.
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2018

Akoua-Koffi, C., Beermann, S., Calvignac-Spencer, S., Couacy-Hymann, E., De Nys, H., Ehlers, B., Gillespie, T., Gilbert, J., Gogarten, J. F., Laney, S. J., Lankester, F., Leendertz, F. H., Makepeace, B., Nitsche, A., Pauli, G., Pauly, M., Skjerve, E., Stern, D., Thamm, R., Travis, D., Unwin, S., Wittig, R. M., & Wittiger, L. (2018). Obituary: Siv Aina Jensen Leendertz (Born Siv Aina Jensen: 1973–2018). International Journal of Primatology,39(6), 1001-1004.
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Löhrich, T., Behringer, V., Wittig, R. M., Deschner, T., & Leendertz, F. H. (2018). The use of neopterin as a noninvasive marker in monitoring diseases in wild chimpanzees. EcoHealth,15(4), 792-803.
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Schamberg, I., Wittig, R. M., & Crockford, C. (2018). Call type signals caller goal: A new take on ultimate and proximate influences in vocal production. Biological Reviews,93(4), 2071-2082.
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Samuni, L., Preis, A., Mielke, A., Deschner, T., Wittig, R. M., & Crockford, C. (2018). Social bonds facilitate cooperative resource sharing in wild chimpanzees. Proceedings of the Royal Society London B,285(1888): 20181643.
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Samuni, L., Preis, A., Deschner, T., Crockford, C. ǂ., & Wittig, R. (2018). Reward of labor coordination and hunting success in wild chimpanzees. Communications Biology,1: 138.
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McCarthy, M., Despres-Einspenner, M.-L., Samuni, L., Mundry, R., Lemoine, S., Preis, A., Wittig, R. M., Boesch, C., & Kühl, H. S. (2018). An assessment of the efficacy of camera traps for studying demographic composition and variation in chimpanzees (Pan troglodytes). American Journal of Primatology,80(9): e22904.
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Preis, A., Samuni, L., Mielke, A., Deschner, T., Crockford, C. ǂ., & Wittig, R. M. (2018). Urinary oxytocin levels in relation to post-conflict affiliations in wild male chimpanzees (Pan troglodytes verus). Hormones and Behavior,105, 28-40.
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Mielke, A., Preis, A., Samuni, L., Gogarten, J. F., Wittig, R. M., & Crockford, C. (2018). Flexible decision-making in grooming partner choice in sooty mangabeys and chimpanzees. Royal Society Open Science,5(7): 172143.
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Wu, D., Behringer, V., Wittig, R. M., Leendertz, F., & Deschner, T. (2018). Urinary neopterin levels increase and predict survival during a respiratory outbreak in wild chimpanzees (Taï National Park, Côte d'Ivoire). Scientific Reports,8: 13346.
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Tagg, N., McCarthy, M., Dieguez, P., Bocksberger, G., Willie, J., Mundry, R., Stewart, F., Arandjelovic, M., Widness, J., Landsmann, A., Agbor, A., Angedakin, S., Ayimisin, A. E., Bessone, M., Brazzola, G., Corogenes, K., Heegde, M. t., Deschner, T., Dilambaka, E., Eno-Nku, M., Eshuis, H., Goedmakers, A., Granjon, A.-C., Head, J. S., Hermans, V., Jones, S., Kadam, P., Kambi, M., Langergraber, K., Lapeyre, V., Lapuente, J., Lee, K., Leinert, V., Maretti, G., Marrocoli, S., Meier, A., Nicholl, S., Normand, E., Ormsby, L. J., Piel, A., Robinson, O., Sommer, V., Tickle, A., Ton, E., van Schijndel, J., Vanleeuwe, H., Vergnes, V., Wessling, E. G., Wittig, R. M., Zuberbuehler, K., Kühl, H. S., & Boesch, C. (2018). Nocturnal activity in wild chimpanzees (Pan troglodytes): Evidence for flexible sleeping patterns and insights into human evolution. American Journal of Physical Anthropology,166(3), 510-529.
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Sonnweber, R., Araya-Ajoy, Y. G., Behringer, V., Deschner, T., Tkaczynski, P. J., Fedurek, P., Preis, A., Samuni, L., Zommers, Z., Gomes, C., Zuberbühler, K., Wittig, R. M., & Crockford, C. (2018). Circadian rhythms of urinary cortisol levels vary between individuals in wild male chimpanzees: A reaction norm approach. Frontiers in Ecology and Evolution,6: 85.
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Wessling, E. G., Deschner, T., Mundry, R., Pruetz, J. D., Wittig, R. M., & Kühl, H. S. (2018). Seasonal variation in physiology challenges the notion of chimpanzees (Pan troglodytes verus) as a forest-adapted species. Frontiers in Ecology and Evolution,6: 60.
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Adamescu, G. S., Plumptre, A. J., Abernethy, K. A., Polansky, L., Bush, E. R., Chapman, C. A., Shoo, L. P., Fayolle, A., Janmaat, K., Robbins, M. M., Ndangalasi, H. J., Cordeiro, N. J., Gilby, I. C., Wittig, R. M., Breuer, T., Hockemba Breuer-Ndoundou, M., Sanz, C. M., Morgan, D. B., Pusey, A. E., Mugerwa, B., Gilagiza, B., Tutin, C., Ewango, C. E., Sheil, D., Dimoto, E., Baya, F., Bujo, F., Ssali, F., Dikangadissi, J.-T., Jeffery, K., Valenta, K., White, L., Masozera, M., Wilson, M. L., Bitariho, R., Ebika, S. T. N., Gourlet-Fleury, S., Mulindahabi, F., & Beale, C. M. (2018). Annual cycles are the most common reproductive strategy in African tropical tree communities. Biotropica,50(3), 417-430.
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Oelze, V. M., Wittig, R. M., Lemoine, S., Kühl, H. S., & Boesch, C. (2018). Meat eating frequencies in wild chimpanzees - The effect of absolute meat amounts, hunt participation and female reproductive state on the delta N-15 ratios of hair. American Journal of Physical Anthropology,165(S66), 192-192.
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Crockford, C., Deschner, T., & Wittig, R. M. (2018). The role of oxytocin in social buffering: What do primate studies add? In R. Hurlemann, & V. Grinevich (Eds.), Current Topics in Behavioral Neurosciences (pp. 155-173). Berlin: Springer.
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Gogarten, J. F., Davies, T. J., Benjamino, J., Gogarten, J. P., Graf, J., Mielke, A., Mundry, R., Nelson, M. C., Wittig, R. M., Leendertz, F. H., & Calvignac-Spencer, S. (2018). Factors influencing bacterial microbiome composition in a wild non-human primate community in Taï National Park, Côte d’Ivoire. The ISME Journal,12, 2559-2574.
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Grützmacher, K., Keil, V., Leinert, V., Legullion, F., Henlin, A., Couacy-Hyman, E., Köndgen, S., Lang, A., Deschner, T., Wittig, R. M., & Leendertz, F. H. (2018). Human quarantine: Towards reducing infectious pressure on chimpanzees at the Taї Chimpanzee Project, Côte d'Ivoire. American Journal of Primatology,80(1): e22619.
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Knauf, S., Gogarten, J. F., Schuenemann, V. J., Nys, H. M. D., Düx, A., Strouhal, M., Mikalová, L., Bos, K. I., Armstrong, R., Batamuzi, E. K., S.Chuma, I., Davoust, B., Diatta, G., Fyumagwa, R. D., Kazwala, R., Keyyu, J. D., Lejora, I. A. V., Levasseur, A., Liu, H., Mayhew, M. A., Mediannikov, O., Raoult, D., Wittig, R. M., Roos, C., Leendertz, F. H., Šmajs, D., Nieselt, K., Krause, J., & Calvignac-Spencer, S. (2018). Nonhuman primates across sub-Saharan Africa are infected with the yaws bacterium Treponema pallidum subsp. pertenue. Emerging Microbes & Infections,7(1): 157.
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Lemoine, S., Boesch, C., Crockford, C., & Wittig, R. M. (2018). Effects of between-group competition on fitness in wild chimpanzees. In GFP 2019 Programme (pp. 28).
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Lemoine, S., Boesch, C., Crockford, C., & Wittig, R. M. (2018). Selective potential of between-group competition in wild chimpanzees. In N.N.
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Patrono, L. V., Samuni, L., Corman, V. M., Nourifar, L., Röthemeier, C., Wittig, R. M., Drosten, C., Calvignac-Spencer, S., & Leendertz, F. H. (2018). Human coronavirus OC43 outbreak in wild chimpanzees, Côte d´Ivoire, 2016. Emerging Microbes & Infections,7(1): 118.
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Sirianni, G., Wittig, R. M., Gratton, P., Mundry, R., Schüler, A., & Boesch, C. (2018). Do chimpanzees anticipate an object's weight? A field experiment on the kinematics of hammer-lifting movements in the nut-cracking Tai chimpanzees. Animal Cognition,21(1), 109-118.
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Wittig, R. M., & Crockford, C. (2018). Chimpanzees: Investigating cognition in the wild. In Field and laboratory methods in animal cognition (pp. 115-145). Cambridge: Cambridge University Press.
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Wu, D., Löhrich, T., Sachse, A., Mundry, R., Wittig, R. M., Calvignac‑Spencer, S., Deschner, T., & Leendertz, F. H. (2018). Seasonal and inter‑annual variation of malaria parasite detection in wild chimpanzees. Malaria Journal,17: 38.
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2017

Fröhlich, M., Müller, G., Zeiträg, C., Wittig, R. M., & Pika, S. (2017). Gestural development of chimpanzees in the wild: The impact of interactional experience. Animal Behaviour,134, 271-282.
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Crockford, C., Wittig, R. M., & Zuberbühler, K. (2017). Vocalizing in chimpanzees is influenced by social-cognitive processes. Science Advances,3(11): e1701742.
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Mielke, A., Samuni, L., Preis, A., Gogarten, J. F., Crockford, C. ǂ., & Wittig, R. M. (2017). Bystanders intervene to impede grooming in Western chimpanzees and sooty mangabeys. Royal Society Open Science,4: 171296.
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Köndgen, S., Calvignac-Spencer, S., Grützmacher, K., Keil, V., Mätz-Rensing, K., Nowak, K., Metzger, S., Kiyang, J., Becker, A. L., Deschner, T., Wittig, R. M., Lankester, F., & Leendertz, F. H. (2017). Evidence for Human Streptococcus pneumoniae in wild and captive chimpanzees: A potential threat to wild populations. Scientific Reports,7: 14581.
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Wittig, R. M. (2017). Tai Chimpanzees (advance online). In J. Vonk, & T. K. Shackelford (Eds.), Encyclopedia of Animal Cognition and Behavior. Cham: Springer International Publishing.
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Zimmermann, F., Köhler, S. M., Nowak, K., Dupke, S., Barduhn, A., Düx, A., Lang, A., Nys, H. M. D., Gogarten, J. F., Grunow, R., Couacy-Hymann, E., Wittig, R. M., Klee, S. R., & Leendertz, F. H. (2017). Low antibody prevalence against Bacillus cereus biovar anthracis in Taï National Park, Côte d'Ivoire, indicates high rate of lethal infections in wildlife. PLoS Neglected Tropical Diseases,11(9): e0005960.
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Ackermann, C. Y., Neumann, C., Crockford, C., Deschner, T., Wittig, R. M., & Zuberbuehler, K. (2017). Variation in strength of juvenile-mother bonds and oxytocin in wild juvenile chimpanzees. Folia primatologica,88(2), 176.
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Froehlich, M., Mueller, G., Zeitraeg, C., Wittig, R. M., & Pika, S. (2017). Developmental effects on gestural employment of chimpanzees in the wild. Folia primatologica,88(2), 150-151.
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Mielke, A., Gogarten, J. F., Preis, A., Samuni, L., Wittig, R. M., & Crockford, C. ǂ. (2017). Bystander effects on grooming interactions in Western Chimpanzees and Sooty Mangabeys. Folia primatologica,88(2), 104-104.
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Samuni, L., Preis, A., Deschner, T., Crockford, C. ǂ., & Wittig, R. M. (2017). Neuroendocrine mechanisms of hunting and food sharing in wild chimpanzees. Folia primatologica,88(2), 103-104.
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Wu, D., Behringer, V., Wittig, R. M., Leendertz, F., & Deschner, T. (2017). Urinary neopterin increases during a respiratory outbreak in wild chimpanzees (Tai National Park, Cote d'Ivoire). Folia primatologica,88(2), 143.
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Hoffmann, C., Zimmermann, F., Biek, R., Kuehl, H., Nowak, K., Mundry, R., Agbor, A., Angedakin, S., Arandjelovic, M., Blankenburg, A., Brazolla, G., Corogenes, K., Couacy-Hymann, E., Deschner, T., Dieguez, P., Dierks, K., Düx, A., Dupke, S., Eshuis, H., Formenty, P., Ginath Yuh, Y., Goedmakers, A., Gogarten, J. F., Granjon, A.-C., McGraw, S., Grunow, R., Hart, J., Jones, S., Junker, J., Kiang, J., Langergraber, K., Lapuente, J., Lee, K., Leendertz, S. A., Léguillon, F., Leinert, V., Löhrich, T., Marrocoli, S., Mätz-Rensing, K., Meier, A., Merkel, K., Metzger, S., Murai, M., Niedorf, S., De Nys, H. M., Sachse, A., van Schijndel, J., Thiesen, U., Ton, E., Wu, D., Wieler, L. H., Boesch, C., Klee, S. R., Wittig, R. M., Calvignac-Spencer, S., & Leendertz, F. H. (2017). Persistent anthrax as a major driver of wildlife mortality in a tropical rainforest. Nature,548(7665), 82-86.
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Surbeck, M., Boesch, C., Girard-Buttoz, C., Crockford, C., Hohmann, G., & Wittig, R. M. (2017). Comparison of male conflict behavior in chimpanzees (Pan troglodytes) and bonobos (Pan paniscus), with specific regard to coalition and post-conflict behavior. American Journal of Primatology,79(6): e22641.
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Surbeck, M., Girard-Buttoz, C., Boesch, C., Crockford, C., Fruth, B., Hohmann, G., Langergraber, K., Zuberbühler, K., Wittig, R. M., & Mundry, R. (2017). Sex-specific association patterns in bonobos and chimpanzees reflect species differences in cooperation. Royal Society Open Science,4: 161081.
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Mossoun, A., Calvignac-Spencer, S., Anoh, A. E., Pauly, M. S., Driscoll, D. A., Michel, A. O., Nazaire, L. G., Pfister, S., Sabwe, P., Thiesen, U., Vogler, B. R., Wiersma, L., Muyembe-Tamfum, J.-J., Karhemere, S., Akoua-Koffi, C., Couacy-Hymann, E., Fruth, B., Wittig, R. M., Leendertz, F., & Schubert, G. (2017). Bushmeat hunting and zoonotic transmission of Simian T-lymphotropic virus 1 in tropical West and Central Africa. Journal of Virology,91(10): e02479-16.
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Schulz-Kornas, E., Stuhltraeger, J., Wittig, R. M., & Kupczik, K. (2017). Dietary abrasiveness and chewing efficiency in chimpanzees. American Journal of Physical Anthropology,162(S64), 350-351.
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Samuni, L., Preis, A., Mundry, R., Deschner, T., Crockford, C. ǂ., & Wittig, R. M. (2017). Oxytocin reactivity during intergroup conflict in wild chimpanzees. Proceedings of the National Academy of Sciences of the United States of America,114(2), 268-273.
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Wu, D., Behringer, V., Wittig, R. M., Leendertz, F., & Deschner, T. (2017).Urinary neopterin increases during a respiratory outbreak in wild chimpanzees (Taï National Park, Côte d’Ivoire). Talk presented at 7th European Federation for Primatology Meeting - 30e Colloque de la Société Francophone de Primatologie. Strasbourg, France. 2017-08-21 - 2017-08-25.
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2016

Luncz, L., Proffitt, T., Kulik, L., Haslam, M., & Wittig, R. M. (2016). Distance-decay effect in stone tool transport by wild chimpanzees. Proceedings of the Royal Society B: Biological Sciences,283(1845): 20161607.
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Gogarten, J. F., Düx, A., Schuenemann, V. J., Nowak, K., Boesch, C., Wittig, R. M., Krause, J., Calvignac-Spencer, S., & Leendertz, F. H. (2016). Tools for opening new chapters in the book of Treponema pallidum evolutionary history. Clinical Microbiology and Infection,22(11), 916-921.
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Wittig, R. M., Crockford, C. *., Weltring, A., Langergraber, K. E., Deschner, T., & Zuberbühler, K. (2016). Social support reduces stress hormone levels in wild chimpanzees across stressful events and everyday affiliations. Nature Communications,7: 13361.
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Madinda, N. F., Ehlers, B., Wertheim, J. O., Akoua-Koffi, C., Bergl, R. A., Boesch, C., Akonkwa, D. B. M., Eckardt, W., Fruth, B., Gillespie, T. R., Gray, M., Hohmann, G., Karhemere, S., Kujirakwinja, D., Langergraber, K. E., Muyembe, J.-J., Nishuli, R., Pauly, M., Petrzelkova, K. J., Robbins, M. M., Todd, A., Schubert, G., Stoinski, T. S., Wittig, R. M., Zuberbühler, K., Peeters, M., Leendertz, F. H., & Calvignac-Spencer, S. (2016). Assessing host-virus codivergence for close relatives of merkel cell polyomavirus infecting african great apes. Journal of Virology,90(19), 8531-8541.
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Antonation, K. S., Grützmacher, K., Dupke, S., Mabon, P., Zimmermann, F., Lankester, F., Peller, T., Feistner, A., Todd, A., Herbinger, I., de Nys, H. M., Muyembe-Tamfun, J.-J., Karhemere, S., Wittig, R. M., Couacy-Hymann, E., Grunow, R., Calvignac-Spencer, S., Corbett, C. R., Klee, S. R., & Leendertz, F. H. (2016). Bacillus cereus biovar anthracis causing anthrax in sub-saharan Africa: Chromosomal monophyly and broad geographic distribution. PLOS Neglected Tropical Diseases,10(9): e0004923.
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Stuhlträger, J., Kupczik, K., Wittig, R. M., & Schulz-Kornas, E. (2016). Grinding away in feeding ecology: Exploring sexual and seasonal variation in chimpanzees. Mammalian Biology,81(Suppl.), 17.
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Fröhlich, M., Wittig, R. M., & Pika, S. (2016). Play-solicitation gestures in chimpanzees in the wild: Flexible adjustment to social circumstances and individual matrices. Royal Society Open Science,3: 160278.
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Kalan, A., Piel, A. K., Mundry, R., Wittig, R. M., Boesch, C., & Kühl, H. S. (2016). Passive acoustic monitoring reveals group ranging and territory use: A case study of wild chimpanzees (Pan troglodytes). Frontiers in Zoology,13: 34.
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Fröhlich, M., Kuchenbuch, P., Müller, G., Fruth, B., Furuichi, T., Wittig, R. M., & Pika, S. (2016). Unpeeling the layers of language: Bonobos and chimpanzees engage in cooperative turn-taking sequences. Scientific Reports,6: 25887.
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Kühl, H. S., Kalan, A. K., Arandjelovic, M., Aubert, F., D'Auvergne, L., Goedmakers, A., Jones, S., Kehoe, L., Regnaut, S., Tickle, A., Ton, E., van Schijndel, J., Abwe, E. E., Angedakin, S., Agbor, A., Ayimisin, E. A., Bailey, E., Bessone, M., Bonnet, M., Brazolla, G., Ebua Buh, V., Chancellor, R., Cipoletta, C., Cohen, H., Corogenes, K., Coupland, C., Curran, B., Deschner, T., Dierks, K., Dieguez, P., Dilambaka, E., Diotoh, O., Dowd, D., Dunn, A., Eshuis, H., Fernandez, R., Ginath, Y., Hart, J., Hedwig, D., Ter Heegde, M., Hicks, T. C., Imong, I. S., Jeffery, K. J., Junker, J., Kadam, P., Kambi, M., Kienast, I., Kujirakwinja, D., Langergraber, K. E., Lapeyre, V., Lapuente, J., Lee, K., Leinert, V., Meier, A., Maretti, G., Marrocoli, S., Mbi, T. J., Mihindou, V., Möbius, Y. B., Morgan, D., Morgan, B., Mulindahabi, F., Murai, M., Niyigabae, P., Normand, E., Ntare, N., Orsmby, L. J., Piel, A., Pruetz, J., Rundus, A., Sanz, C., Sommer, V., Stewart, F., Tagg, N., Vanleeuwe, H., Vergnes, V., Willie, J., Wittig, R. M., Zuberbuehler, K., & Boesch, C. (2016). Chimpanzee accumulative stone throwing. Scientific Reports,6: 22219.
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Fröhlich, M., Wittig, R. M., & Pika, S. (2016). Should I stay or should I go? Initiation of joint travel in mother–infant dyads of two chimpanzee communities in the wild. Animal Cognition,19, 483-500.
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Wittig, R. M. (2016). Ein guter Freund schützt vor Feinden. In H. Fink, & R. Rosenzweig (Eds.), Gehirn zwischen Liebe und Krieg: Menschlichkeit in Zeiten der Neurowissenschaften (pp. 121-138). Münster: Mentis.
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2015

Jirků, M., Votýpka, J., Petrželková, K. J., Jirků-Pomajbíková, K., Kriegová, E., Vodička, R., Lankester, F., Leendertz, S. A. J., Wittig, R. M., Boesch, C., Modrý, D., Ayala, F. J., Leendertz, F. H., & Lukeš, J. (2015). Wild chimpanzees are infected by Trypanosoma brucei. International Journal for Parasitology: Parasites and Wildlife,4(3), 277-282.
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Luncz, L. V., Wittig, R. M., & Boesch, C. (2015). Primate archaeology reveals cultural transmission in wild chimpanzees (Pan troglodytes verus). Philosophical Transactions: Biological Sciences,370(1682): 0140348.
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Power, R. C., Salazar García, D. C., Wittig, R. M., Freiberg, M., & Henry, A. G. (2015). Dental calculus evidence of Taï Forest Chimpanzee plant consumption and life history transitions. Scientific Reports,5: 15161.
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Crockford, C., Wittig, R. M., & Zuberbühler, K. (2015). How intentional are chimpanzee vocalizations? Folia primatologica,86(4), 264-265.
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Fröhlich, M., Kuchenbuch, P., Hohmann, G., Furuichi, T., Wittig, R. M., & Pika, S. (2015). The development of social and spatial independence: Do bonobos (Pan paniscus) and chimpanzees (Pan troglodytes) differ? Folia primatologica,86(4), 284.
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Sirianni, G., Wittig, R. M., & Boesch, C. (2015). Do chimpanzees anticipate an object's weight? A field experiment on the kinematics of hammer-lifting movements in the nut-cracking Tai chimpanzees. Folia primatologica,86(4), 360-361.
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Hoppe, E., Pauly, M., Gillespie, T. R., Akoua-Koffi, C., Hohmann, G., Fruth, B., Karhemere, S., Madinda, N. F., Mugisha, L., Muyembe, J.-J., Todd, A., Petrzelkova, K. J., Gray, M., Robbins, M. M., Bergl, R. A., Wittig, R. M., Zuberbühler, K., Boesch, C., Schubert, G., Leendertz, F. H., Ehlers, B., & Calvignac-Spencer, S. (2015). Multiple cross-species transmission events of human adenoviruses (HAdV) during hominine evolution. Molecular Biology and Evolution,32(8), 2072-2084.
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Crockford, C., Wittig, R. M., & Zuberbühler, K. (2015). An intentional vocalization draws others’ attention: A playback experiment with wild chimpanzees. Animal Cognition,18(3), 581-591.
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Wittig, R. M., Crockford, C. *., Weltring, A., Deschner, T., & Zuberbühler, K. (2015). Single aggressive interactions increase urinary glucocorticoid levels in wild male chimpanzees. PLoS One,10(2): e0118695.
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Cheney, D. L., Crockford, C. *., Engh, A. L., Wittig, R. M., & Seyfarth, R. M. (2015). The costs of parental and mating effort for male baboons. Behavioral Ecology and Sociobiology,69(2), 303-312.
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Wittig, R. M. (2015). Aggression, eine natürliche Anpassung an Konkurrenzsituationen. In G. Hartung, & M. Herrgen (Eds.), Interdisziplinäre Anthropologie: Jahrbuch 2/2014: Gewalt und Aggression (pp. 92-96). Berlin [u.a.]: Springer.
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2014

Gogarten, J. F., Akoua-Koffi, C., Calvignac-Spencer, S., Leendertz, S. A. J., Weiss, S., Couacy-Hymann, E., Koné, I., Peeters, M., Wittig, R. M., Boesch, C., Hahn, B. H., & Leendertz, F. H. (2014). The ecology of primate retroviruses – An assessment of 12 years of retroviral studies in the Taï national park area, Côte d'Ivoire. Virology,460-461, 147-153.
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Langergraber, K. E., Rowney, C., Schubert, G., Crockford, C., Hobaiter, C., Wittig, R. M., Wrangham, R. W., Zuberbühler, K., & Vigilant, L. (2014). How old are chimpanzee communities? Time to the most recent common ancestor of the Y-chromosome in highly patrilocal societies. Journal of Human Evolution,69, 1-7.
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Wittig, R. M., Crockford, C. *., Langergraber, K. E., & Zuberbühler, K. (2014). Triadic social interactions operate across time: a field experiment with wild chimpanzees. Proceedings of the Royal Society of London. Series B: Biological Sciences (London),281(1779): 20133155.
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Albrechtova, K., Papousek, I., Nys, H. M. d., Pauly, M., Anoh, E., Mossoun, A., Dolejska, M., Masarikova, M., Metzger, S., Couacy-Hymann, E., Akoua-Koffi, C., Wittig, R. M., Klimes, J., Cizek, A., Leendertz, F. H., & Literak, I. (2014). Low rates of antimicrobial-resistant enterobacteriaceae in wildlife in Taï National Park, Côte d’Ivoire, surrounded by villages with high prevalence of multiresistant ESBL-producing Escherichia coli in people and domestic animals. PLoS One,9(12): e113548.
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Crockford, C., Deschner, T., Ziegler, T. E., & Wittig, R. M. (2014). Endogenous peripheral oxytocin measures can give insight into the dynamics of social relationships: A review. Frontiers in Behavioral Neuroscience,8: 68.
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De Nys, H. M., Calvignac-Spencer, S., Boesch, C., Dorny, P., Wittig, R. M., Mundry, R., & Leendertz, F. H. (2014). Malaria parasite detection increases during pregnancy in wild chimpanzees. Malaria Journal,13: 413.
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Langergraber, K. E., Rowney, C., Crockford, C., Wittig, R. M., Zuberbühler, K., & Vigilant, L. (2014). Genetic analyses suggest no immigration of adult females and their offspring into the Sonso community of chimpanzees in the Budongo Forest Reserve, Uganda. American Journal of Primatology, 640-648.
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Power, R. C., Salazar García, D. C., Wittig, R. M., & Henry, A. G. (2014). Assessing use and suitability of scanning electron microscopy in the analysis of micro remains in dental calculus. Journal of Archaeological Science,49, 160-169.
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Wilson, M. L., Boesch, C., Fruth, B., Furuichi, T., Gilby, I. C., Hashimoto, C., Hobaiter, C. L., Hohmann, G., Itoh, N., Koops, K., Lloyd, J. N., Matsuzawa, T., Mitani, J. C., Mjungu, D. C., Morgan, D., Muller, M. N., Mundry, R., Nakamura, M., Pruetz, J., Pusey, A. E., Riedel, J., Sanz, C., Schel, A. M., Simmons, N., Waller, M., Watts, D. P., White, F., Wittig, R. M., Zuberbühler, K., & Wrangham, R. W. (2014). Lethal aggression in Pan is better explained by adaptive strategies than human impacts. Nature,513(7518), 414-417.
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Wittig, R. M., Crockford, C. *., Deschner, T., Langergraber, K. E., Ziegler, T. E., & Zuberbühler, K. (2014). Food sharing is linked to urinary oxytocin levels and bonding in related and unrelated wild chimpanzees. Proceedings of the Royal Society B: Biological Sciences,281(1778): 20133096.
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2013

Murthy, S., Couacy-Hymann, E., Metzger, S., Nowak, K., De Nys, H. M., Boesch, C., Wittig, R. M., Jarvis, M. A., Leendertz, F. H., & Ehlers, B. (2013). Absence of frequent herpesvirus transmission in a nonhuman primate predator-prey system in the wild. Journal of Virology,87(19), 10651-10659.
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De Nys, H. M., Calvignac-Spencer, S., Thiesen, U., Boesch, C., Wittig, R. M., Mundry, R., & Leendertz, F. H. (2013). Age-related effects on malaria parasite infection in wild chimpanzees. Biology Letters,9(4): 20121160.
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Crockford, C., Wittig, R. M., Langergraber, K., Ziegler, T. E., Zuberbühler, K., & Deschner, T. (2013). Urinary oxytocin and social bonding in related and unrelated wild chimpanzees. Proceedings of the Royal Society B: Biological Sciences,280(1755): 20122765.
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Crockford, C., Wittig, R., & Zuberbühler, K. (2013). Chimpanzees distinguish acoustically similar alert hoos from resting hoos. Folia primatologica,84(3-5), 291-292.
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2012

Langergraber, K., Pruefer, K., Rowney, C., Boesch, C., Crockford, C., Fawcett, K., Inoue, E., Inoue-Muruyama, M., Mitani, J. C., Muller, M. N., Robbins, M. M., Schubert, G., Stoinski, T. S., Viola, B., Watts, D., Wittig, R., Wrangham, R. W., Zuberbühler, K., Pääbo, S., & Vigilant, L. (2012). Generation times in wild chimpanzees and gorillas suggest earlier divergence times in great ape and human evolution. Proceedings of the National Academy of Sciences of the United States of America,109(39), 15716-15721.
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Crockford, C., Wittig, R. M., Mundry, R., & Zuberbühler, K. (2012). Wild chimpanzees inform ignorant group members of danger. Current Biology,22(2), 142-146.
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2011

Wittig, R. M. (2011). A comprehensive guide to chimpanzee behavior: Review of the audio-visual encyclopedia on "Chimpanzee Behavior in the Wild’" by T. Nishida, K. Zamma, T. Matsusaka, A. Inaba and W.C. Mc Grew. Springer, Japan, Life Science, 2010. American Journal of Primatology,73(5), 498-500.
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Zuberbühler, K., & Wittig, R. M. (2011). Field experiments with non-human primates: A tutorial. In J. M. Setchell, & D. J. Curtis (Eds.), Field and laboratory methods in primatology: A practical guide (2nd ed., pp. 207-224). Cambridge [u.a.]: Cambridge Univ. Pr.
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2010

Silk, J. B., Beehner, J. C., Bergman, T. J., Crockford, C., Engh, A. L., Moscovice, L. R., Wittig, R. M., Seyfarth, R. M., & Cheney, D. L. (2010). Female chacma baboons form strong, equitable, and enduring social bonds. Behavioral Ecology and Sociobiology,54(11), 1733-1747.
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Silk, J. B., Beehner, J. C., Bergman, T. J., Crockford, C., Engh, A. L., Moscovice, L. R., Wittig, R. M., Seyfarth, R. M., & Cheney, D. L. (2010). Strong and consistent social bonds enhance the longevity of female baboons. Current Biology,20(15), 1359-1361.
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Moscovice, L. R., Fiore, A. D., Crockford, C., Kitchen, D. M., Wittig, R. M., Seyfarth, R. M., & Cheney, D. L. (2010). Hedging their bets? Male and female chacma baboons form friendships based on likelihood of paternity. Animal Behaviour,79(5), 1007-1015.
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Wittig, R. M. (2010). The function and cognitive underpinnings of post-conflict affiliation in wild chimpanzees. In E. Lohnsdorf, S. Ross, & T. Matsuzawa (Eds.), The mind of the chimpanzee: Ecological and experimental perspectives (pp. 208-219). The Univ. of Chicago Pr.
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Wittig, R. M., & Boesch, C. (2010). Receiving post-conflict affiliation from the enemy's friend reconciles former opponents. PLoS One,5(11): e13995.
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2009

Silk, J. B., Beehner, J. C., Bergman, T. J., Crockford, C., Engh, A. L., Moscovice, L. R., Wittig, R. M., Seyfarth, R. M., & Cheney, D. L. (2009). The benefits of social capital: Close social bonds among female baboons enhance offspring survival. Proceedings of the Royal Society B: Biological Sciences,276, 3099-3104.
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Fraser, O., Koski, S., Wittig, R. M., & Aureli, F. (2009). Why are bystanders friendly to recipients of aggression? (Opinion article). Communicative & Integrative Biology,2(3), 285-291.
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Kitchen, D., Cheney, D., Seyfarth, R., Beehner, J., Bergman, T., Crockford, C., Engh, A., Fischer, J., & Wittig, R. M. (2009). Costs and consequences of male aggression directed at female chacma baboons. In M. Muller, & R. Wrangham (Eds.), Sexual coercion in primates: An evolutionary perspective on male aggression against females (pp. 128-156). Cambridge, MA: Harvard Univ. Pr.
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2008

Wittig, R. M., Crockford, C. *., Lehmann, J., Whiten, P. L., Seyfarth, R. M., & Cheney, D. L. (2008). Focused grooming networks and stress alleviation in wild female baboons. Hormones and Behavior,54(1), 170-177.
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Amati, S., Babweteera, F., & Wittig, R. M. (2008). Snare removal by a chimpanzee of the Sonso community, Budongo Forest (Uganda). Pan African News,15(1), 6-8.
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Boesch, C., Crockford, C. *., Herbinger, I., Wittig, R. M., Möbius, Y., & Normand, E. (2008). Intergroup conflicts among chimpanzees in Taï National Park: Lethal violence and the female perspective. American Journal of Primatology,70(6), 519-532.
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Crockford, C., Wittig, R. M., Whiten, P., Seyfarth, R. M., & Cheney, D. L. (2008). Social stressors and coping mechanisms in wild female baboons (Papio hamadryas ursinus). Hormones and Behavior,53(1), 254-265.
DOI    BibTeX   Endnote   

2007

Wittig, R. M., Crockford, C. *., Wikberg, E., Seyfarth, R. M., & Cheney, D. L. (2007). Kin-mediated reconciliation substitutes for direct reconciliation in female baboons. Proceedings of the Royal Society B: Biological Sciences,274, 1109-1115.
DOI    BibTeX   Endnote   
Wittig, R. M., Crockford, C. *., Seyfarth, R. M., & Cheney, D. L. (2007). Vocal alliances in Chacma baboons (Papio hamadryas ursinus ). Behavioral Ecology and Sociobiology,61(6), 899-909.
DOI    BibTeX   Endnote   
Crockford, C., Wittig, R. M., Seyfarth, R. M., & Cheney, D. L. (2007). Baboons eavesdrop to deduce mating opportunities. Animal Behaviour,73, 885-890.
DOI    BibTeX   Endnote   

2005

Wittig, R. M., & Boesch, C. (2005). How to repair relationships - reconciliation in wild chimpanzees (Pan troglodytes). Ethology,111(8), 736-763.
DOI    BibTeX   Endnote   

2003

Wittig, R. M., & Boesch, C. (2003). Erratum to: "Decision-making" in conflicts of wild chimpanzees (Pan troglodytes): An extension of the relational model. Behavioral Ecology and Sociobiology,55(2), 209.
DOI    BibTeX   Endnote   
Wittig, R. M. (2003). Conflict management in wild chimpanzees (Pan troglodytes). PhD Thesis, Universität Leipzig, Leipzig.
BibTeX   Endnote   
Wittig, R. M., & Boesch, C. (2003). "Decision-making" in conflicts of wild chimpanzees (Pan troglodytes): An extension of the Relational Model. Behavioral Ecology and Sociobiology,54(5), 491-504.
DOI    BibTeX   Endnote   
Wittig, R. M., & Boesch, C. (2003). Food competition and linear dominance hierarchy among female chimpanzees of the Tai National Park. International Journal of Primatology,24(4), 847-867.
DOI    BibTeX   Endnote   
Wittig, R. M., & Boesch, C. (2003). Linear dominance hierarchy due to contest competition among female chimpanzees (Pan troglodytes verus). Folia Primatologica,74(4), 229-230.
DOI    BibTeX   Endnote   
Wittig, R. M., & Boesch, C. (2003). The choice of post-conflict interactions in wild chimpanzees (Pan Troglodytes). Behaviour,140(11-12), 1527-1559.
DOI    BibTeX   Endnote   

2002

Wittig, R. M. (2002). Die anderen Vettern aus dem Wald - 25 Jahre Tai Schimpansen Projekt, Côte d'Ivoire, Westafrika. Phyllodrom Journal, 49-53.
BibTeX   Endnote   

1996

Wittig, R. M. (1996). Änderungen der Verhaltensprofile bei Schimpansen einer Gehegegruppe während der Integration zweier Artgenossen. Diploma Thesis, Univ. of Bielefeld, Bielefeld.
BibTeX   Endnote   

Videos

Supplementary Videos for Publications

Visit the TCP youtube channel

 

Samuni, L. et al. (2016). Oxytocin reactivity during intergroup conflict in wild chimpanzees (advance online). Proceedings of the National Academy of Sciences of the United States of America

Video Intergroup encounters with subtitles in Taï chimpanzees (filmed by Liran Samuni, ©Taï Chimpanzee Project)

 

Wittig, R.M., Crockford, C. et al. (2016). Social support reduces stress hormone levels in wild chimpanzees across stressful events and everyday affiliations. Nature Communications: 13361

Video 1 Intergoup encounters in Taï chimpanzees (filmed by Liran Samuni, ©Taï Chimpanzee Project)

 

Wittig, R. M., Crockford, C. et al. (2014). Food sharing is linked to urinary oxytocin levels and bonding in related and unrelated wild chimpanzees. Proc. R. Soc. B: 281: 20133096.

Video 1Passive food sharing: Kwera and Kwezi share the pith of a raphia tree in Budongo forest (filmed by Roman Wittig)

Video 2Active food sharing: Kato shares meat with Hawa in Budongo forest (filmed by Cat Hobaiter) 

Video 3Freddy shares actively honey with Athos (East Group, Tai Chimpanzee Project, filmed by Liran Samuni)

 

Crockford, C., Wittig, R. M. et al. (2012). Wild chimpanzees inform ignorant group members of danger. Curr. Biol. 22, 142-146.

Video 1 Kato discovers the snake model and warns Nick, who stops walking (fimed in Budongo forest by Roman Wittig).

PR videos

Exhibition WAR

Landesmuseum für Vorgeschichte, Halle, GER

 

 

Wie Tiere fühlen. Arte Production

Press

Press releases of publications [link]

Taï Chimpanzee Projects News on twitter [link]

Interviews with members of TCP [link]

Portrait & General Reports

Berliner Zeitung, 17 Juni 2020: Auch Menschenaffen müssen vor Corona geschützt werden - Apes need protection from corona virus (article)

Die Zeit, 27 May 2020: Dossier zum Thema Vertrauen - Chimpanzees and the evolution of trust (article)

Die Zeit, 19 June 2019: Dossier zum Thema Macht - What Taï chimpanzees can teach us about the struggle for power (article)

Nature, 16 November 2017: Research highlights: Chimps give extra warning to buddies unaware of danger (article)

New Scientist, 26 February 2016: Bromance helps stressed out warring chimps to keep their cool - on our work about oxytocin (article)

Science Magazine, 2 April 2010: Talking chimp to chimp – Review of our work in Budongo Forest Uganda (pdf)

Scientific Commentary

Nature, 18 September 2014: Animal Behaviour: The evolutionary roots of lethal aggression. Commentary by Joan B. Silk (pdf)

Nature, 17 April 2014: Evolutionary Biology: Dating chimpanzees. Commentary by M. Haslam (pdf)

Current Biology, 24 January 2012: Animal Cognition: Chimpanzee alarm calls depend on what others know. Commentary by Robert M. Seyfarth & Dorothy L. Cheney (pdf)

Current Biology, 10 August 2010: Primatology: “A faithful friend is the medicine of life”. Commentray by Susan C. Alberts (pdf)

Press Review of Specific Papers

Vocalizing in chimpanzees is influenced by social cognitive processes. Science Advances, 2017. 15 November 2017: New York Times, Daily Mail online, Los Angeles Times.

Persistent anthrax as a major driver of wildlife mortality in a tropical rainforest. Nature, 2017. 2 August 2017: Nature, Science, The Atlantic. 5 August 2017: Stuttgarter Zeitung. 7 August 2017: Science alert.

Oxytocin reactivity during intergroup conflict in wild chimpanzees. Proceedings of the National Academy of Sciences USA, 2017. 27 December 2016: Phys.org, Natural Science News, Neurosciencenews.com. 28 December 2016: Fromthegrapevine.com. 6 January 2017: New Scientist.

Social support reduces stress hormone levels in wild chimpanzees across stressful events and everyday affiliations. Nature Communications, 2016. 1 Nov 2016: The Conservation, Daily Mail. 2 Nov 2016: Christian Science Monitor, The Independent, Newsweek, Nature Asia. During Nov 2016: Science Daily, Los Angeles Times.

Lethal aggression in Pan is better explained by adaptive strategies than human impacts. Nature, 2014. 17 Sep 2014: Die Welt (link). 18 Sep 2014: AAAS News (link), New York Times (link), BBC News (link).

Triadic social interactions operate across time: a field experiment with wild chimpanzees. Proceedings of the Royal Society London B, 2014. 6 Jan 2014: SCINEXX [link], Weser Kurier (link)

Food sharing is linked to urinary oxytocin levels and bonding in related and unrelated wild chimpanzees. Proceedings of the Royal Society London B, 2014. 15 Jan 2014: Washington Post (link), Daily Mail (link), Tagesspiegel (link), Die Welt (link).

Urinary oxytocin and social bonding in related and unrelated wild chimpanzees. Proceedings of the Royal Society London B, 2013. 23 Jan 13: BBC Nature (link), Der Spiegel (link), 25 Jan 13: Leipziger Volkszeitung (link)

Wild chimpanzees inform ignorant group members of danger. Current Biology, 2012.
29 Dec 11: BBC Nature (link), The Guardian (link), Wiener Zeitung (link); 30 Dec 11: Bild der Wissenschaft (link), Hamburger Abendblatt (link), Süddeutsche Zeitung (link),USA Today (link); 4 Jan 12: Neue Züricher Zeitung (link)

The benefit of social capital: Close social bonds among female baboons enhance offspring survival. Proceedings of the Royal Society B, 2009
10 July 09 The Guardian (link)

Exhibitions and outreach

Exhibition 'War - tracing an evolution'

From chimpanzee 'wars' to the battle of Lützen (Thirty Years' War)

06 Nov 2015 - 22 May 2016: State Museum of Prehistory, Halle / S. (GER)

24 Oct 2018 - 28 Apr 2019: Museum of Natural History, Vienna, (Austria)

Book review

Positions

Post-Doc

No positions available

PhD

Applications under consideration

Master

Applications under consideration

Links

Existing Collaborations:

Outside MPI EVA (2018)
Josep Call:University of St Andrews, St Andrews, UK
School of Psychology and Neuroscience
Dorothy Cheney & Robert Seyfarth:University of Pennsylvania, Philadelphia, USA
Departments of Biology & Psychology
Angela FriedericiMPI for Cognition and brain Sciences, Leipzig, GERDepartment for Neuropsychology
Cat Hobaiter:University of St. Andrews, St. Andrews, UK
School of Psychology
Peter KappelerGerman Primate Center / University of Göttingen, GER
Behavioural Ecology and Sociobiology
Inza Kone:Université de Cocody, Abidjan, Côte d'Ivoire
Centre Suisse des Recherches Scientifique
Kevin Langergraber:Arizona State University, Tampa, USA
Department of Anthropology
Lydia LunczOxford University, Oxford, UK
Primate Archaeology Group
Fabian Leendertz:Robert Koch Institute, Berlin, GER
Project Group 3: Epidemiology of Highly Pathogenic Microorganisms
Viktoria OelzeUniversity of California Santa Cruz, USA
Department of Anthropology
Julia Ostner & Oliver SchülkeUniversity of Göttingen, Göttingen, GER
Behavioural Ecology
Simone PikaUniversity of Osnabrück, GER
Institute of Cognitive Science
Jill Pruetz:Iowa State University, Ames, USA
Department of Anthropology
James RillingEmory University, Atlanta, USA
Anthropology Department
Joan SilkArizona State University, Tampa, USA
Department of Anthropology
Steven SmithVeterinary University, Vienna, Austria
Konrad Lorenz Institute for Comparative Ethology
Nikolaus WeiskopfMPI for Cognition and brain Sciences, Leipzig, GERDepartment for Neurophysiks

Michael Wilson:

University of Minnesota, Minneapolis, USA Anthropology Department
Toni Ziegler:University of Wisconcin, Madison, USA
National Primate Research Centre
Klaus Zuberbühler:Université de Neuchâtel, Neuchâtel, CH
Department of Comparative Cognition

Inside MPI EVA (2017)

Department of Primatology:
Department of Human Behaviour, Ecology and Culture
Department of Psychology:
Department of Human Evolution: