新潟県沿岸域におけるマガレイの着底場および成育場

概要

論文の詳細を見る
About 85, 000 reared juveniles (34.2mm SL on average) of brown sole, Pleuronectes herzensteini were released on the bottom at a depth of 38m 10km off Iwafune in Niigata Prefecture on 23 April 1991. In subsequent tracking collections with a beam trawl (24 April to 18 June 1991), a total of 74 wild juveniles (10.1-37.3mm SL) as well as 114 released ones (15.7-35.2mm SL) appeared. The latter were destributed around the release ground at a depth of 38m and the former from 25 to 45m. Almost all captured juveniles had fed and the stomach contents of the two types were essentially the same. This suggests that the grounds at depths of 25-45m are the settlement area and nursery for wild juveniles of brown sole, and will be suitable for the release of reared juveniles.
公益社団法人日本水産学会の論文