Evolutionary determinants of non-seasonal breeding in wild chacma baboons

Jules Dezeure, Lugdiwine Burtschell, Alice Baniel, Alecia J. Carter, Bernard Godelle, Cowlishaw Guy & Huchard Elise
Animal reproductive phenology varies from strongly seasonal to non-seasonal, sometimes among closely related or sympatric species. While the extent of reproductive seasonality is often attributed to environmental seasonality, this fails to explain many cases of non-seasonal breeding in seasonal environments. We investigated the evolutionary determinants of non-seasonal breeding in a wild primate, the chacma baboon (Papio ursinus), living in a seasonal environment with high climatic unpredictability. We tested three hypotheses proposing that non-seasonal breeding has...
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