Chum salmon Oncorhynchus keta respond to moonlight during homeward migrations

被引：10
|
作者：
Hasegawa, E. I. [1 ]
机构：
[1] Fisheries Res Agcy, Natl Res Inst Fisheries Engn, Kamisu, Ibaraki 3140408, Japan
来源：
JOURNAL OF FISH BIOLOGY | 2012年 / 81卷 / 02期
关键词：
archival tag; biological clock; natal stream; swimming depth; swimming speed; DIEL VERTICAL MIGRATION; SOCKEYE SALMON; ORIENTATION; PACIFIC;
D O I：
10.1111/j.1095-8649.2012.03356.x
中图分类号：
S9 [水产、渔业];
学科分类号：
0908 ;
摘要：
The swimming depth of chum salmon Oncorhynchus keta equipped with archival tags was investigated off the Pacific Ocean coast of Hokkaido and North Honshu, Japan. As shown from movements of the fish with disc tags, O. keta swam at shallower depths during the full-moon phase than in the other phases and their swimming speed during this phase was faster compared to other phases. In addition, the circadian rhythm suggests a biological clock. These observations are all consistent with the view that O. keta make use of moonlight in order to navigate at night-time during homeward migration.
引用
收藏
页码：632 / 641
页数：10
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