Multiple biological mechanisms result in correlations between pre- and post-mating traits that differ among versus within individuals and genotypes.

Abstract excerpt

Reproductive traits involved in mate acquisition (pre-mating traits) are predicted to covary with those involved in fertilization success (post-mating traits). Variation in male quality may give rise to positive, and resource allocation trade-offs to negative, covariances between pre- and post-mating traits. Empirical studies have yielded mixed results. Progress is hampered as researchers often fail to appreciate...

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