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Deanna M. Soper, Lynda F. Delph and Curt M. Lively Multiple paternity in the freshwater snail, Potamopyrgus antipodarum Ecology and Evolution 2

Article first published online: 16 NOV 2012 | DOI: 10.1002/ece3.408

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Populations of the freshwater snail, Potamopyrgus antipodarum, are known to coevolve with a sterilizing trematode. This evolutionary dynamic predicts that females should attempt to genetically diversify their broods in order to produce rare offspring genotypes that are not likely to become infected. One way for females to accomplish this is through polyandry that results in multiple paternity, here we show that sexual females from two populations exhibit multiple paternity.

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