Habitat Selection and Spatial Interaction by Juvenile Chinook Salmon and Steelhead Trout in Two Idaho Streams
Habitat Selection and Spatial Interaction by Juvenile Chinook Salmon and Steelhead Trout in Two Idaho Streams
复制标题
爱达荷州两条溪流中幼年奇努克鲑鱼和硬头鳟鱼的栖息地选择和空间相互作用
DOI：
10.1139/f72-012
复制
发表时间：
1972
期刊：
影响因子：
--
通讯作者：
D. Chapman
中科院分区：
文献类型：
--
作者：
F. Everest;D. Chapman
在夏季，同域硬头鲑鱼和夏季奇努克鲑鱼被隔离在弯曲的福克和约翰逊小溪。在短期异位寄生中，每个物种占据的栖息地类型与共生寄主相同。大多数0龄钢鱼生活在碎石基岩上，流速和水深分别小于0.15 m/s和0.15 m，0龄钢鱼大部分生活在粉砂基板上，水速小于0.15 m/s，水深0.15-0.3 m；大多数I龄钢鱼栖息在大型碎石衬底上，水速分别为0.15-0.3 m/秒(近底)和0.75-0.9 m/秒(近水面)，深度为0.6-0.75 m。随着每种鱼体型变大，它们进入更快、更深的水域。同样大小的幼年Chinook和Steelhead使用相同的物理空间。但钢头在春季产卵，Chinook在初秋产卵，不同的产卵时间创造了不同的种内和种间大小的前黑猩猩群体。大小差异将社交互动的潜力降至最低，无论是在内部还是在...
During summer sympatric steelhead trout and summer chinook salmon segregated in Crooked Fork and Johnson creeks. In short-term allopatry, each species occupied the same types of habitat as in sympatry. Most age 0 steelhead lived over rubble substrate in water velocities and depths of less than 0.15 m/sec and 0.15 m, respectively; most age 0 chinook lived over silt substrate in water velocities of less than 0.15 m/sec and depths of 0.15–0.3 m; most age I steelhead resided over large rubble substrate in water velocities of 0.15–0.3 m/sec (near bottom) and 0.75–0.9 m/sec (near surface), and in depths of 0.6–0.75 m. As fish of each species became larger they moved into faster, deeper water. Juvenile chinook and steelhead of the same size used the same physical space. But steelhead spawn in spring and chinook spawn in early fall, and disparate times of spawning create discrete intra- and inter-specific size groups of pre-smolts. The size differences minimize potential for social interaction, both intra- and in...