著者

高橋 正

出版者

公益社団法人 日本水産学会

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.44, no.8, pp.869-874, 1978-08-25 (Released:2008-02-29)

参考文献数

24

被引用文献数

2 1

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In the experiment, to study quantitatively the effect of sweeping membranous light or flashing light on the swimming behaviour of fish, the movement of fish school (yellowtail, body length 40cm) in the water tank (10m×7m, 1m depth) was observed every five seconds. As the results, comparing the swimming speeds between the condition with sweeping membranous light and the condition without it, there was a remarkable lowering of the swimming speed under the condition with sweeping light, And this suppression effect was stronger with higher luminous intensity. From the data of these results, it was suggested theoretically that 37 or more lx of irradiation intensity of the sweeping membranous light on the water surface might have maximum effects on the fish movements in a dark environment.