Abstract
We investigated sperm storage by females of a predatory bug, Nabis rugosus, before and after hibernation and with regard to nutritional status. In the field, females had more sperm available before than after hibernation. Food-deprived females maintained fewer sperm than fed females before but not after hibernation. However, after hibernation food-deprived females suppressed egg production rather than decreasing sperm-storage efficiency. Because mated females did not exhibit increased overwinter survival relative to virgin females there is a low likelihood of direct benefits in the form of ejaculate-derived nutrients. If nutrition-dependent sperm storage by females is widespread in the animal kingdom, our findings may have important implications for the understanding of postcopulatory sexual selection and the evolution of food gifts.
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Selected References
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- Crudgington H. S., Siva-Jothy M. T. Genital damage, kicking and early death. Nature. 2000 Oct 19;407(6806):855–856. doi: 10.1038/35038154. [DOI] [PubMed] [Google Scholar]
- Jennions M. D., Petrie M. Why do females mate multiply? A review of the genetic benefits. Biol Rev Camb Philos Soc. 2000 Feb;75(1):21–64. doi: 10.1017/s0006323199005423. [DOI] [PubMed] [Google Scholar]
- Neubaum D. M., Wolfner M. F. Wise, winsome, or weird? Mechanisms of sperm storage in female animals. Curr Top Dev Biol. 1999;41:67–97. doi: 10.1016/s0070-2153(08)60270-7. [DOI] [PubMed] [Google Scholar]
- Wagner W. E., Jr, Kelley R. J., Tucker K. R., Harper C. J. Females receive a life-span benefit from male ejaculates in a field cricket. Evolution. 2001 May;55(5):994–1001. doi: 10.1554/0014-3820(2001)055[0994:fralsb]2.0.co;2. [DOI] [PubMed] [Google Scholar]
- Ward P. I. Cryptic female choice in the yellow dung fly Scathophaga stercoraria (L.). Evolution. 2000 Oct;54(5):1680–1686. doi: 10.1111/j.0014-3820.2000.tb00712.x. [DOI] [PubMed] [Google Scholar]