Female reproductive fluid concentrations affect sperm performance of alternative male phenotypes in an external fertilizer.

Abstract excerpt

There is growing evidence that the female reproductive fluid (FRF) plays an important role in cryptic female choice through its differential effect on the performance of sperm from different males. In a natural spawning event, the male(s) may release ejaculate closer or further away from the spawning female. If the relative spatial proximity of competing males reflects the female pre-mating preference towards...

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