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Distinguished sperm in competition

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  • Tim Birkhead

    (University of Sheffield)

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.

Suggested Citation

  • Tim Birkhead, 1999. "Distinguished sperm in competition," Nature, Nature, vol. 400(6743), pages 406-407, July.
    • Handle: RePEc:nat:nature:v:400:y:1999:i:6743:d:10.1038_22650
    DOI: 10.1038/22650
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