Abstract
The ocypodid crab Ilyoplax pingi, observed in Kanghwa I., Korea in 1992, builds a mound at the burrow entrance, by piling mud dug out from the burrow. The mounds were made by both waving and non-waving males, and by both ovigerous and non-ovigerous females. The burrow diameter at the widest part tended to be larger in crabs with mounds than in crabs without mounds, whereas the burrow depth was not different between them. The mound density increased in the late exposure period, when the crabs' surface activities declined. Mound removal and rebuilding experiments revealed that the presence of the mounds has the effect of keeping neighboring crabs away.
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Communicated by T. Ikeda. Nagasaki
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Wada, K., Yum, S.S. & Park, J.K. Mound building in Ilyoplax pingi (Crustacea: Brachyura: Ocypodidae). Marine Biology 121, 61–65 (1994). https://doi.org/10.1007/BF00349474
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DOI: https://doi.org/10.1007/BF00349474