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Sexual selection theory predicts that sperm competition will push males to produce more, smaller sperm. Paradoxically, in the fruitfly Drosophila bifurca sperm competition is rife but males produce few, giant sperm--the largest known. A recent study reconciles the evolution of giant sperm with theory.

Original publication

DOI

10.1016/j.cub.2006.05.031

Type

Journal article

Journal

Curr Biol

Publication Date

20/06/2006

Volume

16

Pages

R462 - R464

Keywords

Animals, Biological Evolution, Cell Size, Drosophila, Female, Male, Reproduction, Selection, Genetic, Sexual Behavior, Animal, Spermatozoa, Testis