Behaviour of adult Atlantic salmon, Salmo salar L., in the estuary of the River Ribble in relation to variations in dissolved oxygen and tidal flow
Behaviour of adult Atlantic salmon, Salmo salar L., in the estuary of the River Ribble in relation to variations in dissolved oxygen and tidal flow
复制标题
里布尔河口成年大西洋鲑鱼 Salmo salar L. 的行为与溶解氧和潮汐流变化的关系
DOI：
10.1111/j.1095-8649.1988.tb05567.x
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
D. Cragg‐Hine
中科院分区：
文献类型：
--
作者：
I. Priede;J. Solbé;J. Nott;K. O'grady;D. Cragg‐Hine
20条成年返回的鲑鱼在R.在夏季，当一个明显的溶解氧（DO）下降时，使用声学氧传感发射器进行Ribble。排除两个死亡，75%的这些鱼离开河口出海。河口鱼类随潮汐往复运动，其幅度超过10km，DO呈周期性变化。当溶解氧浓度低于40%时，鱼类的活动受到抑制，而当溶解氧浓度低于55%时，鱼类会出现回避现象。大量鱼类流入大海表明，河口的许多鱼类都是前往其他河流的非Ribble鱼类。因此，里布尔河的不利条件可能影响邻近河流的种群。
Twenty adult returning salmon were tracked in the estuary of the R. Ribble using acoustic oxygensensing transmitters during summer when a pronounced dissolved oxygen (DO) sag develops. Excluding two mortalities, 75% of these fish left the estuary to sea. Fish in the estuary moved to and fro with the tides over a 10 km amplitude experiencing cyclical changes in DO. Fish movement was inhibited below 40% of air saturation value (ASV) DO, and there was evidence of avoidance of DO below 55% ASV. The high rate of loss of fish to sea suggests that many of the fish in the estuary are non-Ribble fish en route to other rivers. Adverse conditions in the Ribble therefore are likely to affect stocks in adjacent rivers.