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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


Liran Samuni

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

phone: +49 341 3550 262
e-mail: liran_samuni@[>>> Please remove the brackets! <<<]eva.mpg.de

Research interests
Curriculum Vitae
Publications
Links

Research interests

My primary research interest is in the evolution of sociality, communication and social cognition. In particular, I am interested in the link between cooperation and the formation and maintenance of enduring social-bonds, in highly gregarious species that maintain complex social systems. Despite the prevalence of cooperative behaviour between kin and non-kin individuals among different taxa, and its role in shaping unique cognitive features, little is known regarding the underlying mechanisms that support it. Therefore, I find particularly interesting the interaction between physiology and behaviour, and its potential role in shaping and promoting extreme forms of positive social interactions, such as cooperative acts usually reserved for kin. 

I am currently investigating different aspects of cooperative behaviour, and its association with the strength and stability of social bonds, studying wild chimpanzees (Pan troglodytes verus), at the Taï National Park, Côte d’Ivoire. 

This project is funded by the Max Planck Society and the Minerva Stiftung


 
© L. Samuni

Curriculum Vitae

Education

2013 – present

PhD candidate Leipzig School of Human Origins student at Max Planck Institute for Evolutionary Anthropology, Leipzig Germany

Dissertation: “Underlying mechanisms of cooperation and social bonds in wild chimpanzee (Pan troglodytes): a behavioural and physiological perspective”
Supervisors: Dr. Roman Wittig, Dr. Catherine Crockford, and Dr. Tobias Deschner

2012

MSc. Animal Behaviour
Tel-Aviv University, Tel-Aviv, Israel

Thesis title: “The habituation process and its effects on a wild chimpanzee (Pan troglodytes) community”
Supervisor: prof. Joseph Terkel

2007 – 2010 

Honours BSc. Life Science
Tel-Aviv University, Tel-Aviv, Israel

Work and Field experience

2011 – 2012 

Budongo Conservation Field Station, Budongo forest, Uganda

Habituation team leader – Tracking and observing wild chimpanzees.
Field work included the collection of behavioural and demographic data, as well as recordings of chimpanzee vocalizations for acoustic analysis.

2005 – 2011

Zoological center “Safari”, Ramat-Gan, Israel

Zoo keeper – Preparing balanced diet, keeping the enclosure clean and safe, and providing environmental enrichment to captive zoo animals. 

Zoo teacher/guide – Teaching zoology, conservation and sustainability.

2009 

Israeli Zoo Association & Tel-Aviv university, Israel

Research assistant – Collecting behavioural data for a project investigating stereotypic and abnormal behaviour in captive non-human primates.

2007

“Comunidad Inti Wara Yassi”, Ambu Ari, Bolivia

Volunteer – Rehabilitation wildlife refuge. Supporting sheltered animals and participating in environmental education programs at the surrounding communities.

Publications

Crockford, C., Samuni, L., Vigilant, L., & Wittig, R. M. (2020). Postweaning maternal care increases male chimpanzee reproductive success. Science Advances,6(38): eaaaz5746.
Open Access    DOI    BibTeX   Endnote   

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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.
Open Access    DOI    BibTeX   Endnote   

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Girard-Buttoz, C., Surbeck, M., Samuni, L., Boesch, C., Fruth, B., Crockford, C., Hohmann, G., & Wittig, R. M. (2020). Variable use of polyadic grooming and its effect on access to social partners in wild chimpanzees and bonobos. Animal Behavior,168, 211-224.
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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.
DOI    BibTeX   Endnote   
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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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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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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McCarthy, M., Despres-Einspenner, M.-L., Farine, D. R. F., Samuni, L., Angedakin, S., Arandjelovic, M., Boesch, C., Dieguez, P., Havercamp, K., Knight, A., Langegraber, K. E., & Kühl, H. S. (2020). Camera traps offer a robust means for social network analysis in wild chimpanzees. Folia Primatologica,91(3), 347.
DOI    BibTeX   Endnote   
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.
DOI    BibTeX   Endnote   

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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.
DOI    BibTeX   Endnote   
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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Samuni, L., Wegdell, F., & Surbeck, M. (2020). Behavioural diversity of bonobo prey preference as a potential cultural trait. eLife,9: e59191.
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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.
DOI    BibTeX   Endnote   

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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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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.
DOI    BibTeX   Endnote   
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.
DOI    BibTeX   Endnote   
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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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.
BibTeX   Endnote   
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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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.
DOI    BibTeX   Endnote   
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.
BibTeX   Endnote   
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.
DOI    BibTeX   Endnote   
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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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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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.
DOI    BibTeX   Endnote   
Samuni, L. (2018). Underlying mechanisms of cooperation in wild chimpanzees. PhD Thesis, Universität Leipzig, Leipzig.
BibTeX   Endnote   
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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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.
DOI    BibTeX   Endnote   
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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Hobaiter, C., Samuni, L., Mullins, C., Akankwasa, W. J., & Zuberbühler, K. (2017). Variation in hunting behaviour in neighbouring chimpanzee communities in the Budongo forest, Uganda. PLoS One,12(6): e0178065.
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Holden, E., Brand, C., Grund, C., Samuni, L., Zuberbuhler, K., & Hobaiter, C. (2017). The structure and function of female chimpanzee pant-hoots. Folia primatologica,88(2), 120-121.
DOI    BibTeX   Endnote   
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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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.
DOI    BibTeX   Endnote   
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.
DOI    BibTeX   Endnote   
Samuni, L., Mundry, R., Terkel, J., Zuberbühler, K., & Hobaiter, H. (2014). Socially learned habituation to human observers in wild chimpanzees. Animal Cognition,17(4), 997-1005.
DOI    BibTeX   Endnote   

Links

Wild chimpanzee foundation 
www.wildchimps.org

Department of Primatology, Max Planck Institute for Evolutionary Anthropology
www.eva.mpg.de/primat/index.html

Budongo conservation field station
www.budongo.org


 
© C. Hobaiter, L. Samuni