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Manuscripts under review or in preparation

Thomsen R. Ageing reduces semen quality in a wild primate.

Henkel S, Ruiz-Lambides AV, Berger A, Thomsen R, Widdig A. Do rhesus macaques (Macaca mulatta) recognize group membership via olfactory cues alone?

Thomsen R*, Birkemeyer C*, Ruiz-Lambides AV, Henkel S, Widdig A. Does body odour contain information on paternal kin in a nonhuman primate?

Birkemeyer C*, Thomsen R*, Jänig S, Kücklich M, Slama A, Henkel S, Ruiz-Lambides AV, Widdig A. The challenge of analyzing semiochemicals: comprehensive GC-MS analysis of compounds sampled from skin of rhesus macaques, Macaca mulatta

Grimm A, Weiß BM, Kulik L, Mihoub JB, Mundry R, Köppen U, Brueckmann T, Thomsen R, Widdig A. Earlier breeding, lower success: does the spatial scale of climatic conditions matter in a migratory passerine bird?

*both first author

Published papers

Thomsen R (2015) How friendships evolve: being alike may matter more than being related. Journal of Brief Ideas. DOI10.5281/zenodo.17279 [pdf]

Thomsen R, Sommer V (2015) Masturbation in nonhuman primates In: The International Encyclopedia of Human Sexuality, First Edition, P Whelehan & A Bolin (eds), Wiley-Blackwell press, Boston [pdf]

Zschoke A, Thomsen R (2014) Sniffing behaviours in guenons. Folia Primatologica 85(4): 244-251 [pdf]

Thomsen R (2013) Non-invasive semen collection and analysis in wild macaques. Primates. Primates 55:231-237 [pdf]

Voigt CC, Klöckner P, Touma C, Neuschl C, Brockmann G, Göritz F, Palme R, Thomsen R (2013) Hormonal stress response of laboratory mice to conventional and minimal-invasive bleeding technique. Animal Welfare 22: 449-455 [pdf]

Thomsen R, Voigt CC (2006) Non-invasive blood sampling from primates using laboratory-bred blood sucking bugs (Dipetalogaster maximus, Reduviidae, Heteroptera). Primates 47: 397-400 [pdf]

Thomsen R, Soltis J, Matsubara M, Matsubayashi K, Onuma M, Takenaka O (2006) How costly are ejaculates for Japanese macaques? Primates 47: 272-274 [pdf]

Thomsen R, Soltis J (2004) Male masturbation in free-ranging Japanese macaques. International Journal of Primatology 25: 1033-1041 [pdf]

Thomsen R, Soltis J, Teltscher C (2003) Sperm competition and the function of male masturbation in non-human primates. In: Sexual Selection and Reproductive Competition in Primates: New Perspectives and Directions, CB Jones (ed.), ASP-Book Series, Special Topics in Primatology, Vol. 3, S. 436-453 [pdf]

Soltis J, Thomsen R, Takenaka O (2001) The interaction of male and female reproductive strategies and paternity in wild Japanese macaques, Macaca fuscata. Animal Behaviour 62: 485-494 [pdf]

Soltis J, Thomsen R, Matsubayashi K, Takenaka O (2000) Infanticide by resident males and female counter-strategies in wild Japanese macaques (Macaca fuscata). Behavioural Ecology and Sociobiology 48: 195-202 [pdf]

Thomsen R, Soltis J (2000) Socioecological context of parturition in wild Japanese macaques (Macaca fuscata) on Yakushima island. International Journal of Primatology 21: 685-696 [pdf]

Thomsen R (1997) Observation of the periparturitional behaviour in wild Yakushima macaques (Macaca fuscata). Folia Primatologica 68: 338-342 [pdf]