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Hybridization between native white-spotted charr and nonnative brook trout in the upper Sorachi River, Hokkaido, Japan
| 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)
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Submitter: 大舘 智志
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