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Movement patterns of adult Sakhalin taimen, Parahucho perryi, between stream habitats of the Bekanbeushi River system, eastern Hokkaido, Japan

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Title: Movement patterns of adult Sakhalin taimen, Parahucho perryi, between stream habitats of the Bekanbeushi River system, eastern Hokkaido, Japan
Authors: Honda, Kentaro Browse this author
Kagiwada, Haruka Browse this author
Takahashi, Nobuyuki Browse this author
Miyashita, Kazushi Browse this author
Keywords: Acoustic telemetry
Crepuscular movement
Foraging tactics
Parahucho perryi
Top predator
Issue Date: 1-Apr-2014
Publisher: Springer
Journal Title: Ichthyological Research
Volume: 61
Issue: 2
Start Page: 142
End Page: 151
Publisher DOI: 10.1007/s10228-013-0387-2
Abstract: The behavior of endangered adult Sakhalin taimen Parahucho perryi was tracked during 2008-2010 using acoustic telemetry in the Bekanbeushi River system, which flows through eastern Hokkaido, Japan. Movement distances per unit time of tracked P. perryi were compared between mid- and downstream habitats. Results indicated that movement distances were significantly longer in downstream habitats during all seasons. The movement distances in each stream decreased from spring to autumn. Moreover, tracked P. perryi exhibited crepuscular movement patterns; however, patterns were less pronounced in downstream habitats than in up- and midstream habitats. These findings strongly suggested that adult P. perryi exhibit nearly distinctive movement patterns across stream habitats; thus, fish may adopt different foraging tactics in each stream habitat. Fish moved more frequently in spring, which included the post-wintering and post-spawning season, most likely to search for food and more desirable habitat for recovery.
Rights: The final publication is available at link.springer.com
Type: article (author version)
URI: http://hdl.handle.net/2115/58279
Appears in Collections:北方生物圏フィールド科学センター (Field Science Center for Northern Biosphere) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 本多 健太郎

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