Dispatch. Sperm biology: size indeed matters.
Sperm length is highly variable within and across species, but relatively little attention has been paid to this variation. Two recent studies employing laboratory selection experiments have provided novel insights into the evolution of sperm size.
Zoology Museum, The University of Zürich, Winterthurerstr. 190, 8057 Zürich, Switzerland. hosken@zoolmus.unizh.ch
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D000818:Animals; D005075:Biological Evolution; D048429:Cell Size; D004330:Drosophila / Q000166:cytology; D008297:Male; D008954:Models, Biological; D012641:Selection, Genetic; D013075:Sperm Capacitation; D013094:Spermatozoa / Q000166:cytology* / Q000502:physiology