Data from: Sperm competition accentuates selection on ejaculate attributes

Pauline Vuarin, Yves Hingrat, Loïc Lesobre, Michel Saint-Jalme, Frédéric Lacroix & Gabriele Sorci
Ejaculate attributes are important factors driving the probability of fertilizing eggs. When females mate with several males, competition between sperm to fertilize eggs should accentuate selection on ejaculate attributes. We tested this hypothesis in the North African houbara bustard (Chlamydotis undulata undulata) by comparing the strength of selection acting on two ejaculate attributes when sperm from single males or sperm from different males were used for insemination. In agreement with the prediction, we found that...
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