Sperm limited females drosophila

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Males transferred significantly more sperm to young than to old females Credible threats and promises. Behav Ecol 12 , — Mank, J. Sperm competition and its evolutionary consequences in the insects. Furthermore, discrimination between virgin and mated females has been demonstrated in various species Cook and Gage ; Wedell ; Wedell and Cook ; Teng and Zhang

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Sperm competition

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Adaptive modulation of sperm production rate in Drosophila bifurca, a species with giant sperm

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Selection to produce more sperm can also select for the evolution of larger testes. If males have evolved mechanisms that allow limited numbers of sperm to optimize their lifetime reproductive success Wedell et al. R, Rohlf F.