魚類学雑誌
Online ISSN : 1884-7374
Print ISSN : 0021-5090
本論文
熊本県緑川水系におけるイチモンジタナゴAcheilognathus cyanostigma の分布パターン
大畑 剛史乾 隆帝中島 淳大浦 晴彦鬼倉 徳雄
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ジャーナル フリー

2012 年 59 巻 1 号 p. 1-9

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Acheilognathus cyanostigma is an exotic fish species in Kyushu Island, being an endangered species in central Honshu Island. The distribution pattern of the exotic population in the Midori River system, Kyushu Island, Japan was examined, the species occurring at 28 low-altitude sites out of 96 sites investigated. The relationships between presence/absence of the species and environmental factors (altitude, water depth, current velocity, turbidity, river width and riverbank conditions) were analyzed using a generalized linear mixed model, riverbank conditions, water depth, turbidity and altitude having either positive or negative effects. In particular, a concrete-covered riverbed was found negatively affect distribution.

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© 2012 The Ichthyological Society of Japan
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