How female × male and male × male interactions influence competitive fertilization in <i>Drosophila melanogaster</i>.

The parsimonious confidence set consisted of two models on second‐male sperm transfer ( N = 557, ΔAIC c ≤ 0.64), represented by strong positive effects of copulation duration ( β = 0.26; 95% confidence interval [0.10–0.42]) and the number of resident sperm ( β = 0.48 [0.32–0.63]), and a weak trend for an interaction between them ( β = 0.25 [–0.05 to 0.55]; Table S9).

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