2016 Fiscal Year Final Research Report
An investigation for degrees of reproductive isolation on the several contact zones among genetic lineages of Cynops pyrrhogaster
| Project/Area Number |
25870572
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Biodiversity/Systematics
Conservation of biological resources
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| Research Institution | University of the Ryukyus |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Keywords | 生殖隔離 / 交雑帯 / 遺伝子浸透 / アカハライモリ |
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| Outline of Final Research Achievements |
We detected nuclear genome differences between the two mtDNA clades of Cynops pyrrhogster. We found many hybrid individuals around the hybrid zone between the Central and the Western Japan groups in Chugoku district. On the contrary, we detected a few hybrid individuals around hybrid zone between the Northern and the Central Japan groups in Chubu district. The migration rate analysis revealed that an asymmetric gene introgression between two genetic groups in Chugoku district occurred, suggesting the possibility of range displacement of the two lineages as a consequence of the shift of their hybrid zone. On the contrary, we could not detected obvious nuclear genome differences based on microsatellite markers between the Tohoku and Kanto races in the Northern Japan group in Kanto district and between the Western and the Southern Japan groups in Kyushu district.
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| Free Research Field |
分類学、集団遺伝学、両棲類学
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