Spawning Per Recruit Analysis for Female Snow Crab Chionoecetes opilio in the Sea off Kyoto Prefecture.
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چکیده
منابع مشابه
Biochemical indicators of muscle growth in the snow crab Chionoecetes opilio (O. Fabricius).
This study examined the relationships between muscle growth rate, the activity of metabolic enzymes and the RNA:DNA ratio, in adult snow crabs Chionoecetes opilio. After moulting, crabs were assigned to three feeding rations to attain a range of tissue growth rates. Muscle growth rate, estimated by the variation in dry tissue content per ml of merus of the first walking leg, was positively corr...
متن کاملChanges in muscle of postmoult snow crabs Chionoecetes opilio ( O . Fabricius ) fed different
Somatic growth, muscle cell condition and metabolism, and gonadal production have been 21 21 studied in male snow crabs Chionoecetes opilio fed 0, 0.4 and 2 g ? animal ? day and sampled 5, 25, and 60 days after the terminal moult. Twenty-five days after moulting, muscle growth rate was low in crabs fed a high ration and negative in the other groups, and no gonadal production took place. This su...
متن کاملPathology of Hematodinium infections in snow crabs (Chionoecetes opilio) from Newfoundland, Canada.
Bitter crab disease (BCD) of snow crabs, Chionoecetes opilio, is caused by a parasitic dinoflagellate, Hematodinium sp. The disease has shown an alarming increase in prevalence in the commercial fishery in eastern and northeastern areas of Newfoundland and Labrador since it was first recorded there in the early 1990s. We documented histopathological alterations to the tissues in snow crabs with...
متن کاملAn estimation of growth parameter, mortality rates and yield-per-recruit for beluga (Huso huso) living in Caspian Sea
This paper presents the results of study on age, growth, mortality rates and yield-per-recruit of Beluga (Huso huso) living in Caspian Sea. The mean length of successive years, mortality rates and yield-per-recruit studies indicated that at present the resource is under heavy fishing pressure. For the female Beluga growth was regarded as comprising of three stages, and the von Bertalanffy param...
متن کاملSex-change rules, stock dynamics, and the performance of spawning-per-recruit measures in protogynous stocks
Abstrac t— Predicting and understanding the dynamics of a population requires knowledge of vital rates such as survival, growth, and reproduction. However, these variables are inf luenced by individual behavior, and when managing exploited populations, it is now generally realized that knowledge of a species’ behavior and life history strategies is required. However, predicting and understandin...
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ژورنال
عنوان ژورنال: NIPPON SUISAN GAKKAISHI
سال: 1999
ISSN: 1349-998X,0021-5392
DOI: 10.2331/suisan.65.288