Mass immigration of juvenile fishes into a small, once-dried tributary demonstrates the importance of remnant tributaries as wintering habitats
Mass immigration of juvenile fishes into a small, once-dried tributary demonstrates the importance of remnant tributaries as wintering habitats
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幼鱼大量迁徙到曾经干涸的小支流中，这表明了残余支流作为越冬栖息地的重要性
DOI：
10.1007/s10228-016-0564-1
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发表时间：
2017
影响因子：
1.2
通讯作者：
Yukiyo Kanazawa
中科院分区：
文献类型：
--
作者：
I. Koizumi;Yuuki Tanaka;Yukiyo Kanazawa
人们对溪流鱼类的冬季生态仍然知之甚少，尤其是非鲑科鱼类。音更河（日本北部北海道中部）的一条小支流（宽度 <4 m，长度 <1 公里）于 2013 年夏季脱水，这使我们能够评估夏季干旱后的移民情况。夏季脱水后的四个月内，超过10000只西伯利亚石鳅Barbatula toni、日本鲮鱼Tribolodonspp.和非本地虹鳟鱼Oncorhynchus mykissim的幼鱼迁徙到支流。这表明，即使是残余的支流也可能是一些幼鱼的重要越冬栖息地。
The winter ecology of stream fishes is still poorly understood, especially in non-salmonid species. A small tributary (<4 m in width, <1 km in length) of the Otofuke River (central Hokkaido, northern Japan) dewatered in the summer of 2013, which allowed us to evaluate immigration after the summer draught. More than 10000 juveniles of Siberian stone loachBarbatula toni, Japanese daceTribolodonspp., and non-native rainbow troutOncorhynchus mykissimmigrated to the tributary in the four months following the summer dewatering. This suggests that even remnant tributaries may be critical wintering habitats for some juvenile fishes.