Difference in habitat use between the two related goby species of Gymnogobius opperiens and Gymnogobius urotaenia: A case study in the Shubuto River System, Hokkaido, Japan
Difference in habitat use between the two related goby species of Gymnogobius opperiens and Gymnogobius urotaenia: A case study in the Shubuto River System, Hokkaido, Japan
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Gymnogobius opperiens 和 Gymnogobius urotaenia 两种相关虾虎鱼栖息地利用的差异：日本北海道 Shubuto 河流系统的案例研究
DOI：
10.1007/s10228-015-0501-8
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发表时间：
2016
影响因子：
1.2
通讯作者：
Y. & A. Terui
中科院分区：
文献类型：
--
作者：
Miyazaki;Y. & A. Terui
2011年6 - 7月，在日本北海道西南部疏布托河水系对两种裸鱼（gymnogobius oppeiensas）和尾带裸鱼（gymnogobius urotaenia）生境利用的纵向和横断面差异进行了调查。广义线性模型表明，水道离海距离对两者的丰度均有显著影响。opperiensandG。它们以不同的方式相互作用。也就是说,G。在中游有一个分布高峰，但g。随着离海距离的增加，尿频逐渐减少。此外，g。opperiensandG。在边缘生境和中水道生境之间，Urotaenia和所有局部环境变量存在显著差异。BothG。opperiensandG。乌洛塔尼亚沿着河的边缘分布最为丰富。然而，前者经常在中航道采集，而后者从未在生境中采集过。这些结果与先前断言两种虾虎鱼的栖息地分离的观察结果相吻合。两种不同的生境利用可能与种群大小和形态的差异有关。
The longitudinal and cross-sectional differences in habitat use betweenGymnogobius oppeiensandGymnogobius urotaenia(sister species) were investigated from June to July 2011 in the Shubuto River System, southwestern Hokkaido, Japan. Generalized linear model revealed that watercourse distance from the sea had a significant influence on the abundances of bothG. opperiensandG. urotaeniabut in different ways. That is,G. opperienshad a distributional peak at the middle reaches, but the abundance ofG. urotaeniagradually decreased with increasing distance from the sea. In addition, the lateral distribution patterns ofG. opperiensandG. urotaenia, and all the local environmental variables were significantly different between the fringe and the mid-channel habitats. BothG. opperiensandG. urotaeniawere most abundant along the margins of the river. However, the former species was frequently collected from the mid-channel, whereas the latter species was never collected in the habitat. These results coincide with previous observations asserting habitat segregation of the two goby species. The differential habitat use between the two species may be related to the differences in their population sizes and morphologies.