仙台湾ブリの生産に関する群集生態学的研究-6-魚群の滞留期間〔英文〕

概要

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Mean sojourning period of young amberfish (Seriola quinqueradiate) was estimated in this report for the purpose of grasping its production process in Sendai Bay under limitation in time and space, by means of comparing the duration of daily catch compositions by set-nets, with the aid of the recapture rates obtained by marking experiments. Young amberfish population, migration in the coastal area, can be regarded as an aggregate which involves several sized fish schools that secure their living in a community while they repeatedly interchange members with one another. During the zenith of fishing, mean sojourning period of schools of the amberfish may be estimated to be the order of 10-20 days. In the course of this examination, it was fairly clarified that each of the marked amberfish gets in a population at random and behaves normally in company with members of fish schools.
日本水産學會の論文