Brown trout (Salmo trutta) habitat use and life history in Swedish streams: possible effects of biotic interactions
Brown trout (Salmo trutta) habitat use and life history in Swedish streams: possible effects of biotic interactions
复制标题
瑞典溪流中的褐鳟（Salmo trutta）栖息地利用和生活史：生物相互作用的可能影响
DOI：
10.1139/f97-313
复制
发表时间：
1998
影响因子：
2.4
通讯作者：
F. Nordwall
中科院分区：
文献类型：
--
作者：
I. Näslund;E. Degerman;F. Nordwall
为了测试，如果栖息地的使用和生活史的流居住的褐鳟鱼（萨尔莫trutta）不同的异域和同域的情况下，我们比较了三个流不同的鱼类群落和使用的数据从一个大型的国家数据库，包含电捕鱼结果从瑞典流。在三小溪的研究中，异域褐鳟鱼使用所有的栖息地，并从苗圃区浅滩转移到池栖息地，成人的生长和生存更高。主要是女性改变栖息地，这是1岁后进行。同域性褐鳟鱼在其他鱼类的强烈压力下，在整个生命周期中一直留在浅滩中。在其他物种的适度压力下，较大的褐鳟鱼使用缓慢流动的栖息地。早期生长在同域中更快。同域褐鳟鱼也有一个较低的成人少年的增长率和较低的成人生存和成熟早于异地褐鳟鱼。从全国数据库的数据显示，发生的频率和丰富的。
To test if habitat use and life history of stream-dwelling brown trout (Salmo trutta) differed between allopatric and sympatric situations, we compared three streams with differing fish communities and used data from a large national database containing electrofishing results from Swedish streams. In the three-creek study, allopatric brown trout used all habitats and shifted from nursery areas in riffles to pool habitats, where adult growth and survival were higher. Mainly females shifted habitat and this was undertaken after age 1. Sympatric brown trout under intense pressure from other fish species remained in the riffles throughout their life cycle. Under moderate pressure from other species, larger brown trout used slow-flowing habitats. Early growth was more rapid in sympatry. Sympatric brown trout also had a lower adult to juvenile growth ratio and lower adult survival and matured earlier than allopatric brown trout. The data from the nationwide database showed that frequency of occurrence and abund...