Sentences with phrase «multiple ejaculate»

By measuring multiple ejaculate traits of each male, the study characterized complex patterns of multivariate selection on combinations of sperm size, speed, and swimming path straightness.

Here, we exploit the experimental tractability of a broadcast spawning marine invertebrate to overcome these challenges and characterise multivariate sexual selection on sperm traits when multiple ejaculates compete.

Not exact matches

Ejaculation in men is not always coincident with orgasm: paralysis victims bereft of feeling below the waist often get erections and ejaculate without having a climax, and prepubescent boys can achieve orgasm, even multiple ones, without ejaculating.

When ant queens mate with multiple males their sperm have a single time - window to compete with rival ejaculates for storage in the reproductive organs of the queens.

In many species, the occurrence of female multiple mating (for internal fertilizers) or multi-individual spawning (for external fertilizers) leads to competition for fertilizations among ejaculates from rival males (sperm competition).