クメ　マナブ   Manabu Kume   久米　学    所属   石巻専修大学  理工学部    職種   准教授
言語種別	英語
発行・発表の年月	2019/08
形態種別	研究論文（学術雑誌）
査読	査読あり
標題	Longitudinal distribution and microhabitat use of young Japanese eel Anguilla japonica in a small river flowing through paddy areas
執筆形態	未選択
掲載誌名	Journal of Applied Ichthyology
巻・号・頁	35(4),pp.876-883
担当区分	筆頭著者,責任著者
著者・共著者	Manabu Kume,Yuki Terashima,Toshihiro Wada,Yoh Yamashita
概要	© 2019 Blackwell Verlag GmbH Although the Japanese eel Anguilla japonica is a commercially important species, its habitat use is not well understood during its life stages in the river. In this study, we investigated the longitudinal distribution and microhabitat use of young Japanese eels (<200 mm in total length [TL], which correspond to elver and early yellow stages) using 180 quadrates (1 m × 1 m) in six stations in a small river (approximately 11.5 km long, 3.0–25.0 m wide) that flows through paddy areas in Fukushima Prefecture, Japan. No differences were observed in the TL of eels among the sampling stations. The analysis using generalized linear models showed that eel density increased as number of weirs decreased. The analysis using generalized additive models showed that water depth, current velocity, and substrate complexity were important factors determining microhabitat use. Eels used shallow habitats (<35 cm) with slow currents (5–40 cm/s) and high complex riverbeds (>0.35 in index of substrate complexity). These findings provide useful information to conserve and manage wild eels inhabiting small rivers flowing through paddy areas.
DOI	10.1111/jai.13911
ISSN	0175-8659/1439-0426