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Killer sperm: Sexual 'arms race' takes its toll on females
Killer sperm: Sexual 'arms race' takes its toll on females

Sure, nobody really thinks of worm sperm as being cute and cuddly -- assuming one thinks about them at all -- but who would have thought they were stone cold killers? In a paper published Tuesday in PLOS Biology, a team of researchers who apparently enjoy watching nematodes get jiggy were shocked to learn that male sperm will conduct search-and-destroy missions on females and hermaphrodites of other worm species. Instead of simply fertilizing the partner's eggs and being done with the whole exercise, the sperm of male Caenorhabditis nematodes who mate with other species will not only bully "milder" sperm and cause sterilization, they'll also destroy body tissues...

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