Spawning migration and redd construction of Sakhalin taimen, Hucho perryi (Salmonidae) on northern Hokkaido Island, Japan
Spawning migration and redd construction of Sakhalin taimen, Hucho perryi (Salmonidae) on northern Hokkaido Island, Japan
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日本北海道岛北部库页岛哲罗鱼、哲罗鱼（鲑鱼科）的产卵迁徙和红色构建
DOI：
10.1111/j.1095-8649.1994.tb01261.x
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发表时间：
1994
影响因子：
2
通讯作者：
M. Fukushima
中科院分区：
文献类型：
--
作者：
M. Fukushima
研究了日本北方北海道小溪流中库页岛哲罗鱼（Huchoperryi）的redd构建的时空格局。产卵发生在4月下旬，与流量模式密切相关。观察到的redd大小（平均值± 95% C.I.）长145 ± 11.8cm，宽84 ± 5.8cm。每只红鲑的卵囊数为1 ~ 2个，少于文献报道的其他鲑科鱼类。1991年和1992年的产卵场分布在分布均值和离散度方面基本相似。与其他鲑鱼不同的是，库页岛泰门鱼在一个产卵季节可能会建造多个红点。
Spatial and temporal patterns of redd construction by Sakhalin taimen, Hucho perryi, were studied in small streams on northern Hokkaido, Japan. Spawning took place in late April with close relation to discharge patterns. Observed redd size (mean ± 95% C.I.) was 145 ± 11·8 cm in length and 84 ± 5·8 cm in width. The number of egg pockets per redd was either one or two, which is fewer than that of other salmonids reported in the literature. Spawning ground distributions in 1991 and 1992 were similar to each other in terms of the distribution mean and dispersion of the redds. Unlike other salmonids Sakhalin taimen probably constructed multiple redds during one spawning season.