| Project/Area Number |
20570090
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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 |
Biodiversity/Systematics
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| Research Institution | Oita University |
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Principal Investigator |
HASEGAWA Hideo Oita University, 医学部, 教授 (00126442)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Hiroshi 山口大学, 農学部, 教授 (90211945)
IKEDA Yatsukaho 大分大学, 医学部, 講師 (80363547)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 蟯虫類 / 霊長類 / 共進化 / DNA / 塩基配列 / 系統 / 線虫類 / 寄生虫 / 線虫 |
|---|
| Research Abstract |
Various pinworms were collected from humans, wild and captive primates over the world. They were identified morphologically, and 18S rDNA and mtDNA Cox1 gene were sequenced. Neighbor-joining analysis based on these molecules could not depict phylogenetic tree congruent with the splitting order for prosimians and the New-World primates. However, the order of divergence the Old-world primates is congruent with that of host primates, supporting coevolution hypothesis. Three types were present in human pinworms: Type A is parasitic in Asian people; Type B in East Africans and Europeans, and also Brazilians residing in Japan; Type C has been collected from captive chimpanzees only, but is supposed to be parasitic in east African people. Phylogenetic analysis revealed that Type C split first, B and A were then diverged. It is surmised that these types were formed with dispersal of modern humans.
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