Courtship tactics by male Ilyoplax pusilla (Brachyura, Dotillidae) |
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Authors: | Asami Kasatani Keiji Wada Yoichi Yusa John H Christy |
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Institution: | (1) Department of Biological Science, Faculty of Science, Nara Women’s University, Nara 630-8506, Japan;(2) Smithsonian Tropical Research Institute, Balboa, Republic of Panama; |
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Abstract: | Mating in the dotillid crab Ilyoplax pusilla occurs after the female enters the male’s burrow in the tidal flat. Males use two tactics to cause females to enter their
burrows for mating: the male either directs claw waving to the female (courting-wave display), to which the females responds
by following the male to his burrow, or the male runs rapidly away from, then back toward, his burrow (dash-out-back display),
which startles the female into his burrow. Males more often used the courting-wave than the dash-out-back display, but mating
success did not differ between the two tactics. Male use of either tactic was influenced by date, female density and male
size; the courting-wave display was used by larger males, later in the breeding period, and under higher female density. |
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