Biogeographic Patterns in Waving Display, and Body Size and Proportions of Macrophthalmus japonicus Species Complex (Crustacea: Brachyura: Ocypodidae)(Taxonomy and Systematics)

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Two closely related ocypodid crabs, Macrophthalmus japonicus (De Haan) and M. Banzai Wada & Sakai, show partly sympatric distribution, with the former species ranging more northward than the latter. Patterns of male waving display, that differ distinctively between the two species, were the same within each species among different localities. Geographic variations were described in the both species for carapace width at puberty, carapace length relative to carapace width, and propodus length of male cheliped relative to carapace width. Interspecific differences could be observed in these morphometric characters. Geographic variations of the characters within each species seemed to be related to oceanic to thalassic or exposed to sheltered situations of localities.
社団法人日本動物学会の論文
1991-02-15