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Implication of post-copulatory sexual selection for reproductive success in a promiscuous bird

Last update: : Tuesday 3 October 2017, by Nicolas Busser

Presented by: Pauline Vuarin, Université de Bourgogne Franche-Comté
Date: Thursday 21st Sept 2017, 13:30-15:00
Place: IPHC, Amphithéâtre Grünewald, bâtiment 25

We investigated the fitness implications of post-copulatory sexual selection in a promiscuous bird, the houbara bustard. First, we documented selection patterns on ejaculate traits. Both sperm number and motility were under positive directional selection, but the strength of selection was higher under sperm competition. Then, we artificially inseminated females with sperm from males differing in their levels of relatedness, or in their ages. We found that cryptic choice enables females to mitigate the deleterious effects of inbreeding and male reproductive senescence.

https://www.researchgate.net/profile/Pauline_Vuarin