Non-fertile sperm delay female remating

Penny A. Cook () and Nina Wedell
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Penny A. Cook: School of Health, Liverpool John Moores University
Nina Wedell: University of Stockholm

Nature, 1999, vol. 397, issue 6719, 486-486

Abstract: Abstract Sperm competition is thought to be responsible for the tremendous inter- and intraspecific variation in sperm number1 and size2. But why several animals produce a range of sperm types3,4, some of which are incapable of fertilizing the female's eggs4, has remained unexplained for nearly 100 years5. We have found that non-fertile sperm protect a male's reproductive investment by delaying female remating in the polyandrous green-veined white butterfly, Pieris napi (Pieridae).

Date: 1999
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DOI: 10.1038/17257

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