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SUMMARY:Lee Koren\, Bar Ilan University\, Title: Sex\, survival\, and steroids: Lessons from 27 years of rock hyrax research
DESCRIPTION:In this talk\, I will share what I have learned about how endocrine mechanisms interact with environmental and social factors to shape variation in fitness-related outcomes in a wild social mammal. Drawing on nearly three decades of data from free-ranging rock hyraxes (Procavia capensis)\, I will discuss how male reproductive tactics are associated with divergent investment in sexual signaling\, sperm production\, and reproductive success\, mediated in part by testosterone. I will then present results showing that male longevity is explained by the interaction between testosterone and cortisol. Throughout the talk\, I will also discuss evidence for sexual conflict that has emerged from our long-term study and consider the importance of examining sex differences through long-term studies of animals in their natural environments. Together\, my findings highlight the role of hormones in mediating mating strategies and life-history trade-offs and demonstrate how phenotypic flexibility can arise from the integration of intrinsic condition and extrinsic pressures in a complex social system.
URL:https://bec.ucla.edu/event/lee-koren-bar-ilan-university-title-tbd/
LOCATION:352 Haines Hall
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