Data from: Stabilizing selection on sperm number revealed by artificial selection and experimental evolution

Silvia Cattelan, Andrea Di Nisio & Andrea Pilastro
Sperm competition is taxonomically widespread in animals and is usually associated with large sperm production, being the number of sperm in the competing pool the prime predictor of fertilization success. Despite the strong postcopulatory selection acting directionally on sperm production, its genetic variance is often very high. This can be explained by trade-offs between sperm production and traits associated with mate acquisition or survival, that may contribute to generate an overall stabilizing selection. To investigate...
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