2012 Fiscal Year Final Research Report
Analysis of genetic and ecological factors crucial to the settlement of introduced species
| Project/Area Number |
22570018
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Ecology/Environment
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| Research Institution | Mie University |
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Principal Investigator |
KAWAMURA Kouichi 三重大学, 大学院・生物資源学研究科, 准教授 (80372035)
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| Co-Investigator(Kenkyū-buntansha) |
KATANO Osamu 独立行政法人水産総合研究センター, 内水面研究部, 研究室長 (60211843)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 移入種 / コイ科魚類 / 遺伝的多様性 / 栄養カスケード / 定着成功 / 環境適応 / FA / 自然選択 |
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| Research Abstract |
The factors related to the invasion success of introduced Zaccoplatypus was examined from the viewpoints of genetics, ecology and morphology. Not only was the degree of invasion success decreased, but also feeding ecology was negatively impacted by the presence of Plecoglossus altivelis. In DNA analyses, it was found that most of the introduced populations are of Lake Biwa origin and their effective population sizes are positively correlated to the degree of invasion success. In addition, a few loci seem to contribute to the differentiation in morphological characters related to feeding in the invasion success of Z. platypus
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