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- W2052967025 abstract "Abstract Heterocypris incongruens and Eucypris virens are geographic parthenogens inhabiting temporary ponds. Several authors proposed that, after the last glaciation, asexual lineages would spread throughout Europe more efficiently than sexual ones. The range expansion, that followed metapopulation dynamics characterized by genetic bottlenecks and subsequent inbreeding/outbreeding depression, had strong negative fitness consequences in sexuals. Using controlled crosses we estimated inbreeding and outbreeding depression in the sexual populations of H. incongruens and E. virens and compared the experimental reproduction rate in sexual and asexual females of both species. Inbreeding depression varied according to species and fitness components but, in general, was not significantly different between inbred and outbred crosses. In H. incongruens, inbred crosses produced a higher percentage of resting eggs and had higher fecundity than intrapopulation outbred crosses. Reproduction rate in asexuals of both species was about twice that in sexuals. Our data does not support the hypothesis that sexual populations exhibit inbreeding depression in geographic parthenogens. However, outbreeding depression and the lower efficiency of sexuals in establishing new populations may account for the role of metapopulation dynamics in geographic parthenogenesis of both species." @default.
- W2052967025 created "2016-06-24" @default.
- W2052967025 creator A5004370111 @default.
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- W2052967025 date "2012-12-01" @default.
- W2052967025 modified "2023-09-24" @default.
- W2052967025 title "Inbreeding and outbreeding depression in geographical parthenogensHeterocypris incongruensandEucypris virens(Crustacea: Ostracoda)" @default.
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- W2052967025 doi "https://doi.org/10.1080/11250003.2012.718375" @default.
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