| Project/Area Number |
09839037
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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 |
自然史科学
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| Research Institution | Aichi-Gakuin University School of Dentistry |
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Principal Investigator |
KOYASU Kazuhiro Aichi-Gakuin University School of Dentistry, Department of Second Anatomy, Lecturer, 歯学部, 講師 (50183348)
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| Co-Investigator(Kenkyū-buntansha) |
ASAKAWA Mitsuhiko Rakuno Gakuen University School of Veterinary Medicine, Department of Parasitology, Associate Professor, 獣医学部, 助教授 (30184138)
HARADA Masashi Osaka City University Medical School, Laboratory Animal Center, Associate Professor, 医学部, 助教授 (20117964)
ODA Sen-ichi Nagoya University Graduate School of Bio-Agricultural Sciences, Laboratory of Animal Management, Associate Professor, 農学部, 助教授 (60023660)
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| Project Period (FY) |
1997 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1999: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥1,200,000 (Direct Cost: ¥1,200,000)
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| Keywords | small mammals / phylogeny / Himalayan Corridor / Morphology / evolution of karyotype / Chromosome / Biogeography / evolution / 分子進化 |
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| Research Abstract |
To analyze the origin and evolution of Japanese small mammals, we studied morphological, cytogenetical, molecular, biochemical, and parasitological data sets. There are many candidates that represents the derivatives of the ancestral species that came through the "Himalayan Corridor" to Japan. Among them, the species complex of Japanese Microtus montebelli and its allies, M..kikuchii from Taiwan, M.oeconomus from Russia, and M.sikimensis from Nepal, is one of the most suitable species for the study. Morphological, karyological, and parasitological findings confirms a close relation between M.montebelli, M.oeconomus, and M.kikuchii. This conclusion also denies the origin of M.montebelli from M.arvalis or M.fortis. Other species of Japanese small mammals also studied and discussed from various points of view through this study.
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