期刊
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 270, 期 -, 页码 S54-S56出版社
ROYAL SOC
DOI: 10.1098/rsbl.2003.0008
关键词
diet; Heteroptera; hibernation; hunger; nuptial gift; post-mating effects
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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