EMG telemetry studies on upstream migration of chum salmon in the Toyohira river, Hokkaido, Japan
EMG telemetry studies on upstream migration of chum salmon in the Toyohira river, Hokkaido, Japan
复制标题
日本北海道丰平河鲑鱼上游洄游的肌电图遥测研究
DOI：
10.1007/s10695-011-9495-y
复制
发表时间：
2011
影响因子：
2.9
通讯作者：
他6名7番目
中科院分区：
文献类型：
--
作者：
Makiguchi M;Ueda H;他6名7番目
2007年10月和2008年10月，在日本北海道丰平江沿岸，利用肌电（EMG）传感器对28尾大麻哈鱼（Oncorhynchus凯塔（Walbaum））成年鱼进行了沿着追踪，以调查和评价大麻哈鱼通过底床保护床和鱼道的上游洄游行为。成功通过保护床和鱼道的鱼类接近时间短于不成功的鱼类。不成功的鱼被观察到游泳的电流与高水的速度和浅水深度在游泳速度超过他们的临界游泳速度（Ucrit）在接近这些结构。因此，不成功的鱼经常交替爆发和最大持续速度之间没有上升的鱼道，并最终成为筋疲力尽。重要的是，鱼道的建设，使鲑鱼很容易找到一个通道，使他们能够迅速向上游迁移，而不会浪费过多的能量。
The movements of 28 adult chum salmon,Oncorhynchus keta(Walbaum) tagged with electromyogram (EMG) transmitters were tracked along the Toyohira river, Hokkaido, Japan, in October of 2007 and 2008 to investigate and evaluate the upstream migratory behavior through the protection bed and fishway of ground sills. The approach time of fish that ascended successfully through the protection bed and fishway was shorter than that of unsuccessful fish. The unsuccessful fish were observed to swim in currents with high water velocity and shallow water depth at swimming speeds that exceeded their critical swimming speed (Ucrit) during the approach to these structures. In consequence, unsuccessful fish frequently alternated between burst and maximum sustained speeds without ever ascending the fishway, and eventually became exhausted. It is important that fishway are constructed to enable chum salmon to find a passage way easily, so that they can migrate upstream rapidly without wasting excessive energy.