標識放流結果からみた黄海産マダイの分布と移動について

概要

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In the middle of November, 1964, a total of 13, 094 tagged sea bream, Chrysophrys major TEMMINCK et SCHLEGEL, were released at the 352nd 160th, and 371st official blocks in the Yellow Sea to determine their movement and distribution (Figs. 1, 2 and Table 1). Sixteen hundred and three recoveries were made through March, 1965. Analysing the recovery data, the results obtained are summarizing as follows: 1) The fishing intensity was thought to be very high during the period between November and December in this area, from the fact that 86% of the recoveries were obtained during the first 30 days just after the liberation (Table 2). 2) They moved in all directions within 30 days after liberation, but thereafter, most of them traveled east or southeast toward their wintering area (Figs. 3, 4). 3) The speed of the movement tended to increase and the maximum was seen at about 20 days after the liberation, thereafter, a decrease in their moving speed was noted (Fig. 5).
公益社団法人日本水産学会の論文