Condition dependence of sexual attractiveness in the bank vole |
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Authors: | Sylwia Łopuch Jacek Radwan |
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Institution: | (1) Institute of Environmental Sciences, Jagiellonian University, ul. Gronostajowa 7, 30-387 Krakow, Poland |
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Abstract: | The capture of genetic variation by sexual traits due to their condition dependence is hypothesized to underlie the genetic
benefits of mate choice. Here, we investigate condition dependence of sexual attractiveness of bank vole Myodes glareolus males by manipulating their diet during the period of maturation. We find that reducing diet quality negatively affected
both male mating success and development of preputial glands used in sexual signaling. Preputial glands showed stronger condition
dependence than other organs measured (testes, heart, intestines). In contrast to mating success, male dominance was not significantly
affected by diet manipulation and was not correlated with male mating success. Thus, our results support condition dependence
of sexual attractiveness but not of intrasexual competitiveness. |
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Keywords: | Good genes Mate choice Rodent Dominance Sexual selection |
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