Female Promiscuity Does Not Lead to Increased Fertility or Fecundity in an Arctiid Moth (Utetheisa ornatrix) |
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Authors: | Alexander L. Bezzerides Vikram K. Iyengar Thomas Eisner |
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Affiliation: | (1) Department of Biological Sciences, University of Wisconsin-Barron County, 1800 College Drive, Rice Lake, WI 54868, USA;(2) Department of Biology, Villanova University, Villanova, PA 19085, USA;(3) Department of Neurobiology and Behavior, Cornell University, Ithaca, NY 14853, USA |
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Abstract: | Prior work has demonstrated significant phenotypic benefits to female promiscuity in the arctiid moth Utetheisa ornatrix. We were interested in determining whether U. ornatrix females also derive genetic benefits from mating multiply. We specifically tested whether, by mating with several males, females are able to exploit postcopulatory mechanisms that decrease the risk of fertilization by incompatible sperm. We show evidence that U. ornatrix females are not taking multiple mates as fertilization insurance because: (1) females that mate once are as fertile as those that mate three times; and (2) females that take three different mates are no more fertile than those that mate three times with the same male. |
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Keywords: | Female promiscuity genetic benefits Arctiidae fertilization polyandry |
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