Multiple mating, paternity, and body size in a simultaneous hermaphrodite, Aplysia californica
نویسندگان
چکیده
Lisa Angeloni, Jack W. Bradbury, and Ronald S. Burton Section of Ecology, Behavior and Evolution, Division of Biology, University of California, San Diego, La Jolla, CA 92093-0116, USA, Cornell Library of Natural Sounds, Cornell University, Ithaca, NY 14850, USA, and Marine Biology Research Division, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093-0202, USA
منابع مشابه
Sexual selection in a simultaneous hermaphrodite with hypodermic insemination: body size, allocation to sexual roles and paternity
Theory predicts that variation in body size within a population of simultaneous hermaphrodites should affect sex allocation, leading to individual differences in mating strategies and increased investment in female function with size. Small animals with fewer resources should invest proportionally more of their resources in male function than large animals, resulting in sperm displacement and p...
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Reproductive behavior of Aplysia californica Cooper was studied in the field and laboratory. Distinct diel patterns of behavior were found in the field. During the summer > 1/2 ofA. californica observed at 0300 and 0900 were engaged in reproductive behaviors (precopulatory behavior, copulations, egg-laying); feeding behavior predominated at 1500 and 2100. Relatively little time was spent crawli...
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Sperm competition has been studied in many gonochoric animals but little is known about its occurrence in simultaneous hermaphrodites, especially in land snails. The reproductive behaviour of the land snail Helix aspersa involves several features, like multiple mating, long-term sperm storage and dart-shooting behaviour, which may promote sperm competition. Cryptic female choice may also occur ...
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Sex allocation theory for simultaneous hermaphrodites predicts an influence of the mating group size on sex allocation. Mating group size may depend on the size of the group in which an individual lives, or on the density, but studies to date have not distinguished between the two factors. We performed an experiment in which we raised a transparent simultaneous hermaphrodite, the flatworm Macro...
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تاریخ انتشار 2003