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- W2227402218 endingPage "20151279" @default.
- W2227402218 startingPage "20151279" @default.
- W2227402218 abstract "In polyandrous mating systems, male reproductive success depends on both mate-acquisition traits (precopulatory) and sperm competitive abilities (postcopulatory). Empirical data on the interaction between these traits are inconsistent; revealing positive, negative or no relationships. It is generally expected that the investment in pre- and postcopulatory traits is mediated by environmental conditions. To test how dietary resource availability affects sexual ornamentation, sperm quality and their interrelationship in three-spined sticklebacks (Gasterosteus aculeatus), full-sibling groups were raised under three conditions differing in food quantity and/or quality (i.e. carotenoid content): (i) high-quantity/high-quality, (ii) high-quantity/low-quality or (iii) low-quantity/low-quality. After 1 year of feeding, food-restricted males developed a more intense breeding coloration and faster sperm compared with their well-fed brothers, indicating that they allocated relatively more in pre- and postcopulatory traits. Moreover, they outcompeted their well-fed, carotenoid-supplemented brothers in sperm competition trials with equal numbers of competing sperm, suggesting that food-restricted males maximize their present reproductive success. This may result in reduced future reproductive opportunities as food-restricted males suffered from a higher mortality, had an overall reduced body size, and sperm number available for fertilization. In accordance with theory, a trade-off between the investment in pre- and postcopulatory traits was observed in food-restricted males, whereas well-fed males were able to allocate to both traits resulting in a significantly positive relationship." @default.
- W2227402218 created "2016-06-24" @default.
- W2227402218 creator A5054510089 @default.
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- W2227402218 date "2015-10-22" @default.
- W2227402218 modified "2023-10-16" @default.
- W2227402218 title "Dynamic resource allocation between pre- and postcopulatory episodes of sexual selection determines competitive fertilization success" @default.
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- W2227402218 doi "https://doi.org/10.1098/rspb.2015.1279" @default.
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