| Project/Area Number |
10041177
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Field Research |
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| Research Field |
系統・分類
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| Research Institution | TOKYO METROPOLITAN UNIVERSITY |
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Principal Investigator |
YAMASAKI Tsukane TOKYO METROPOLITAN UNIVERSITY,Graduate school of Science, Professor, 大学院・理学研究科, 教授 (90008714)
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| Co-Investigator(Kenkyū-buntansha) |
IKEDA Kazuo Beckman Research Institute of the City of Hope, Directorate, シティ・オブ・ホープ研究所・神経生理学部門, 部長
TANAKA Kosuke Kyorin University Medical School, Assistant Professor, 医学部, 助手 (50236585)
KUROKAWA Makoto TOKYO METROPOLITAN UNIVERSITY,Graduate school of Science, Assistant Professor, 大学院・理学研究科, 助手 (50211222)
KUWASAWA Kiyoaki TOKYO METROPOLITAN UNIVERSITY,Graduate school of Science, Professor, 大学院・理学研究科, 教授 (10015589)
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| Project Period (FY) |
1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥5,900,000 (Direct Cost: ¥5,900,000)
Fiscal Year 1998: ¥5,900,000 (Direct Cost: ¥5,900,000)
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| Keywords | Onychophora / Phylogeny / Neurobiology / Trinidad / St.Lucia / Jamaica / カギムシ / 神経伝達物質 / セロトニン / トリニダード・トバゴ |
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| Research Abstract |
The major purposes of our project are to obtain appropriate materials of onychophoran species for a phylogenetic analysis and particularly, to obtain basic neurophysiological data.
The onychophoran animals are distributed in the Carribean and C.and S.American countries, so that this time-survey was made on Carribean countries such as Trinidada & Tobago, St. Lucia and Jamaica on October to November, 1998.
In the report, first the natural history on onychophorans is described and then the result of our field survey in the Carribean area is given. There are many poluted areas by insecticide in the area. This means to threaten the animal. However, some good points to collect animals were found. One of them was the Blue Mountain area of Jamaica. We discovered a new locality of Onychophora in the area.
Based on the materials obtained, nerrophysiological preliminary experiments were carried out. The result showed that, in the cetral and peripheral nervous systems of the Onychophora, there are immunoreactive neurons or neuronal processes to anti-serotonin-like antibody. The presence of the immunoreactive neurons is first reported in the Onychophora, with the presence of FMRFamide. And further, it is reported for the first time that serotonin has a role of neurotransmitter in the Onychophora.
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