Natural history of amphidromous gastropods
Project/Area Number |
24770072
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Biodiversity/Systematics
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Research Institution | The University of Tokyo |
Principal Investigator |
KANO Yasunori 東京大学, 大気海洋研究所, 准教授 (20381056)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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Keywords | 両側回遊 / 軟体動物 / 腹足類 / 幼生 / 河川 / 生物地理 / 熱帯 / 国際研究者交流 / 国際情報交換 / フランス / パプアニューギニア / 進化 / 分類学 / パプア・ニューギニア / 島嶼河川 |
Outline of Final Research Achievements |
The natural history of neritid and thiarid gastropods was studied for understanding the role and importance of amphydromy in freshwater ecosystems on coastal and oceanic islands. Our comprehensive, well-supported molecular phylogeny of the former family not only confirmed repeated invasions of freshwater by marine ancestors but also suggested multiple reinvasions of the sea from limnic habitats. A plausible explanation for such unusual reversal in habitat shifts is the ontogenetically euryhaline nature of amphidromous animals. Re-classification of the IWP species based on shell morphology and mitochondrial COI sequences revealed that most amphidromous taxa have very small intraspecific variation throughout their wide-ranging distributions that often span several thousand kilometers. Species richness peaks in the Coral Triangle and declines with increasing distance from this region, both latitudinally and longitudinally, corresponding with the pattern for shallow marine animals.
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Report
(4 results)
Research Products
(29 results)
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[Journal Article] Sea-slug invasion of the land2015
Author(s)
Kano, Y., T.P. Neusser, H. Fukumori, K.M. Joerger & M. Schroedl
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Journal Title
Biological Journal of the Linnean Society
Volume: 0
Pages: 0-0
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] 両側回遊性腹足類の自然史2014
Author(s)
狩野泰則
Organizer
2014年度魚類学会シンポジウム
Place of Presentation
神奈川県立生命の星・地球博物館
Year and Date
2014-11-17
Related Report
Invited
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