Studies on the origin of exotic loaches and their impact on indigenous species
Project/Area Number |
21380114
|
Research Category |
Grant-in-Aid for Scientific Research (B)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
General fisheries
|
Research Institution | Hokkaido University |
Principal Investigator |
ARAI Katsutoshi 北海道大学, 大学院・水産科学研究院, 教授 (00137902)
|
Co-Investigator(Kenkyū-buntansha) |
MURAKAMI Masaru 麻布大学, 獣医学部, 教授 (80271360)
YABE Mamoru 北海道大学, 大学院・水産科学研究院, 教授 (80174572)
|
Project Period (FY) |
2009 – 2011
|
Project Status |
Completed (Fiscal Year 2011)
|
Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2011: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2009: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
|
Keywords | 倍数体 / クローン / ミトコンドリアDNA / 反復配列 / マイクロサテライト / 交雑 / FISH / 生物多様性保全 / RAG1 / IRBP2 / 交雑種 / 異数体 / ミニサテライト / 減数分裂 |
Research Abstract |
Loaches collected in Japan and adjacent area were genetically characterized by chromosome observation, genome size estimation and sequence analyses of mitochondrial and nuclear DNA markers. As a result, Japanese market samples were genetically identical or very similar to those distributed in China. As artificial inter-specific hybrids between indigenous loach and exotic mud loach species exhibit fertility in females, genetic contamination is worried in Japanese wild populations.
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Report
(4 results)
Research Products
(29 results)