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Free Content Survival and growth of the Japanese crayfish Cambaroides japonicus in a small stream in Hokkaido

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Abstract:

Growth over the life cycle, including seasonal variation, of the Japanese crayfish, Cambaroides japonicus (de Haan, 1841), was examined for a population found in a stream in Hokkaido, northern Japan. The growth equation estimated for males was Lt = 106.6 (1-exp (−0.02987 (0.08333t + 0.9444 + 0.3279 sin (0.5236t − 0.6947)))) and for females, Lt = 126.2 (1-exp (−0.02413 (0.08333t + 1.213 + 0.2768 sin (0.5236t − 1.548)))), where Lt is the carapace length (mm) measured from the posterior of the eye socket to the posterior margin of the carapace at age t (months after settlement in July). The longevity of males is estimated to be 11 yr, and females 10 yr. Both sexes become sexually mature 5 or 6 yrs after hatching.

Document Type: Research Article

Publication date: July 1, 1997

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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umrsmas/bullmar/1997/00000061/00000001/art00017
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