仙台湾ブリの生産に関する群集生態学的研究-3-ブリ幼魚の移動〔英文〕

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Mark and recapture experiments on young amberfish were conducted in the Sendai Bay and at a coast along Joban to know their movements, sojourning time, growth and population size. During the period from 1968 to 1972, 1, 387 individuals of the fish were released and 79 of them were recaptured. Schools of young amberfish in the 0-age group migrate toward the coast of Sendai Bay, leaving drifting-sea-weeds, during the periods June-July when the Kuroshio water mass approaches along the coasts of the Tohoku Region. Judging collectively from the relation-ships between the positions of release and recovery they appear to be sojourning in the Bay or neighbouring areas till late September, and then move toward the south as the water temperature falls. By the following spring, about May, fish in the 1-year age group migrate gradually up north by way of Joban coast. Some schools of fish among the population in the 0-age group presumably stay over the coldest season in the neighbourhood areas of Boso peninsula.
日本水産學會の論文