Distinguished sperm in competition

Tim Birkhead ()
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Tim Birkhead: University of Sheffield

Nature, 1999, vol. 400, issue 6743, 406-407

Abstract: Female fruitflies are often inseminated by more than one male during any particular breeding cycle. Usually, sperm from the last male is successful in fertilizing the egg. Why? Several theories -- ranging from physical displacement of the previous male's sperm, to inactivation of that sperm -- could account for this. Using fluorescently labelled sperm, one group now narrows down these possibilities.

Date: 1999
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DOI: 10.1038/22650

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