Parental Body Mass as a Determinant of Egg Size and Egg Output in an Arctiid Moth (Utetheisa ornatrix) |
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Authors: | Vikram K Iyengar Thomas Eisner |
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Institution: | (1) Department of Neurobiology and Behavior, Cornell University, Ithaca, New York, 14853 |
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Abstract: | Females of the moth Utetheisa ornatrix (family Arctiidae) mate preferentially with larger males. As a consequence, females have larger sons and daughters, which have been shown to be more acceptable in courtship and more fecund, respectively. We demonstrate that mating with larger males results in accelerated oviposition by the female on the day after mating and that females are intrinsically prone to lay larger eggs in the first days after mating. Both these additional size-dependent effects have potential adaptive consequences. |
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Keywords: | spermatophore fecundity parental investment Arctiidae pyrrolizidine alkaloid |
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