小漁港内における人工種苗マダイ幼稚魚放流後の行動,分布および個体数変化

概要

論文の詳細を見る
The behaviour, distribution, and population size changes of artificially-bred O-group red sea bream Pagrus major were studied after releasing twice in a small fishing port. Three types of behaviour were distinguished in the fish released: 1) school, 2) aggregation, and 3) solitary. The number of solitary individuals of the first released group increased in a logistic curve, which seems to show that there exists a carrying capacity for the released population of red sea bream in the small fishing port. By contrast, that of the second released group did not show a distinct increase. The differences in the recruitment pattern between the first and second released groups suggest that the effect of prior residence works, intermediated by the territorial behaviour of solitary individuals of the first released group.
日本水産學會の論文