2016 Fiscal Year Final Research Report
Explosive geographic diversification of chromosome number in harvestmen and speciation accompanied by circular overlap and double invasion
| Project/Area Number |
26440218
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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 |
Biodiversity/Systematics
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| Research Institution | Tottori University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 種分化 / 地理的分化 / 染色体 / 環状重複 / 倍数体 / ザトウムシ類 |
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| Outline of Final Research Achievements |
Extensive chromosome surveys and molecular phylogenetic analyses recently made on several opilionid species (or species-groups) have revealed that extensive revisions are needed for systematics of those species. Results of molecular phylogeny obtained denied a hyhothesis that Gagrellula grandis and G. ferruginea in the Kyushu Island have been differentiatiated through double invasions via Island Yakushima. A race of Nelima from the Izu-Hakone areas that has been thought as a derivative of Nelima nigricoxa in western Japan showed close relationship to Nelima genufusca in eastern Honshu. This indicates the Izu-Hakone race may have been differentiated through a circular overlap from Nelima genufusca populations in the northern Kanto through the Boso Peninsula.
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| Free Research Field |
動物分類学
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