2013 Fiscal Year Final Research Report
Confirmation of genetic pollution of alien Chinese giant salamander on native Japanese species
| Project/Area Number |
23510294
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Resource conservation science
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| Research Institution | Kyoto University |
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Principal Investigator |
MATSUI Masafumi 京都大学, 人間・環境学研究科(研究院), 教授 (40101240)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 中国産 / 外来種 / 遺伝子判定 / 交雑 / マイクロサテライト |
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| Research Abstract |
Previous survey revealed that native Japanese giant salamander is genetically polluted through hybridization with alien Chinese salamanders in the Kamo River, Kyoto. In order to understand the matter more closely, we developed new microsatellite markers to make genotyping easier and more correctly. As a result of field survey in the Kamo River and other river systems, it is clarified that genetic pollution is rapidly in progress. Native salamanders might have extinguished in the Kamo River, and hybridization is becoming popular in the Kami-Katsura River in a river system different from the Kamo River. Genetic pollution of native species through hybridization of alien species or resultant hybrids is much more spread than is expected. It is urgently required to find out some way to conserve native species in isolated conditions.
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