Observations on the reproductive behavior of the spiny king crab Paralithodes brevipes (Anomura: Lithodidae)

Wada Satoshi, Ashidate Masakazu, Goshima Seiji

doi:10.18353/crustacea.26.0_56

Observations on the reproductive behavior of the spiny king crab Paralithodes brevipes (Anomura: Lithodidae)

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Wada Satoshi

Faculty of Fisheries, Hokkaido University
Ashidate Masakazu

Japan Sea-Farming Association
Goshima Seiji

Faculty of Fisheries, Hokkaido University

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タイトル別名

Observations on the reproductive behavi

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The reproductive behavior of the spiny king crab, Paralithodes brevipes, was observed in the laboratory. Females always molted before mating and extruding eggs. Males performed pre-copulatory guarding behavior before and/or after its mate molted. When males guarded females, prior to the female molting, the average duration from the start of guarding to molting was 38.6 ± 24.9SD hours. Females spawned within 24 hours of molting. Competition among males for females was observed, and larger males appeared to have a competitive advantage although copulation occurred even when males were smaller than their mates.