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Sperm size matters
News from The Scientist 2002, 3(1):20021108-02
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Elaborate courtship displays often occur between rival males before mating, for example the bloody battles between male elephant seals, but relatively little has been known about sperm competition after mating. In November 8 Science, Gary Miller and Scott Pitnick at the Department of Biology, Syracuse University, New York, USA, show that the dimensions of the female reproductive tract exerts selection pressure on sperm size and fertilization success in Drosophila (Science 298:1230-1233, November 8, 2002).
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