池田湖におけるハゼ2種の個体数変化と生産量

概要

論文の詳細を見る
The study is aimed to stress the importance of littoral region in the lake for the two gobioid fishes (Tridentiger obscurus and Rhinogobius giurinus) from the view point of biological production. Seasonal changes in density and mean body weight were estimated by monthly sampling. Both species showed seasonal migrations in the lake ; in spring they immigrated from offshore to littoral region for spawning and feeding, while in winter they emigrated for overwintering from littoral region to offshore. Production rates of both fishes were estimated by ALLEN's method in each of the littoral region and offshore, and the significance of littoral region for production of both species was discussed in relation to their seasonal migrations.
日本生態学会の論文
1978-12-31