Variation in Apical Hook Length Reflects the Intensity of Sperm Competition in Murine Rodents

Abstract excerpt

BACKGROUND: Post-copulatory sexual selection has been shown to shape morphology of male gametes. Both directional and stabilizing selection on sperm phenotype have been documented in vertebrates in response to sexual promiscuity. METHODOLOGY: Here we investigated the degree of variance in apical hook length and tail length in six taxa of murine rodents. CONCLUSIONS: Tail sperm length and apical hook length were...

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