Conférences et séminaires » Séminaire présenté par A. Engelhardt, Research Group "Primate Sexual (...)

Séminaire présenté par A. Engelhardt, Research Group "Primate Sexual Selection"

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Male and female reproductive strategies in primate multi-male groups

Par : Antje ENGELHARDT, Jr.
Research Group “Primate Sexual Selection”, German Primate Center

(Invitée par B. Thierry)

Date : jeudi 12 mai 2011 à 13h30
Lieu : IPHC, Amphi Grünewald, bâtiment 25

Résumé :

Due to their differential investment into offspring, males and females differ in their reproductive strategies and ever since struggle with each other for control over reproduction. Primates inhabit a special niche in this struggle since sexual activity of females significantly exceeds the period in which mating can lead to conception. Amongst the primates, females substantially vary in traits with which they signal the probability of their fertile phase. This has important implications for males who need to efficiently time their investment into reproduction in terms of acquiring and monopolizing access to females, and also for paternity certainty and male investment into paternal care. For a long time, scientists were limited in their ability to accurately investigate male and female reproductive strategies in wild primates, since it was not possible to determine when females were able to conceive and which male sired the offspring. The more recent development of genetic paternity analysis and field endocrinology based on faecal samples nowadays allows primatologists to study primate sexual selection under natural conditions. We currently investigate male and female reproductive strategies in different macaque species varying in the occurrence of sexual signals and degree of promiscuity.