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Hybridization between native white-spotted charr and nonnative brook trout in the upper Sorachi River, Hokkaido, Japan

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/57808

Title: Hybridization between native white-spotted charr and nonnative brook trout in the upper Sorachi River, Hokkaido, Japan
Authors: Kitano, Satoshi Browse this author
Ohdachi, Satoshi Browse this author →KAKEN DB
Koizumi, Itsuro Browse this author →KAKEN DB
Hasegawa, Koh Browse this author
Keywords: Brook trout
White-spotted charr
Invasion
Directional hybridization
Issue Date: 2013
Publisher: Springer
Journal Title: Ichthyological Research
Volume: 61
Issue: 1
Start Page: 1
End Page: 8
Publisher DOI: 10.1007/s10228-013-0362-y
Abstract: Invasion status and impacts of nonnative brook trout (Salvelinus fontinalis) in a Hokkaido stream were investigated with field surveys and genetic analyses. Nonnative brook trout was detected in nine (41 %) of the 22 sampled reaches in three tributaries of the Sorachi River, Hokkaido, Japan. Based on the external pigmentation, twelve putative hybrids between brook trout and native white-spotted charr (Salvelinus leucomaenis) were collected in two reaches. Microsatellite and mitochondrial DNA data established that 58% of these hybrids were firstgeneration (F1) progenies between male brook trout and female white-spotted charr. Our results suggest potential negative impacts of nonnative brook trout on native charr populations in Hokkaido through interspecific interactions.
Rights: The final publication is available at link.springer.com
Type: article (author version)
URI: http://hdl.handle.net/2115/57808
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 大舘 智志

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