| Project/Area Number |
22570025
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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 |
Ecology/Environment
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| Research Institution | The University of Shiga Prefecture |
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Principal Investigator |
URABE Misako 滋賀県立大学, 環境科学部, 教授 (50263421)
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| Co-Investigator(Kenkyū-buntansha) |
AGATSUMA Takeshi 高知大学, 医学部, 教授 (40117031)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
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| Keywords | 寄生 / 宿主特異性 / 地理的分化 / 分子系統 / 遺伝子浸透 |
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| Research Abstract |
Some species of trematodes genus Genarchopsis, which uses Semisulcospira snails as the first intermediate hosts, were analyzed phylogenetically. The result showed that a strain of Genarchopsis(G. gigi) is endemic to Lake Biwa and diverged from other clades in relatively earlier era. This suggests that G. gigi adapts to some endemic snail species in Lake Biwa, and other species including G. goppo adapts to non-endemic species. We also developed a new molecular marker (the introns of phosphogenkinase 1 gene) for the phylogenetic analysis of host snails.Two individuals of Semisulcospira habei (usually tolerant to G. goppo and susceptible to G. gigi), which were suggested as hybrids of S. decipiens (susceptible to G. goppo) by the analysis of the ITS-1, were susceptible both to G. gigi and G. goppo. Our result suggests that interspecific hybridization affects trematode susceptibilityof snails, butmore data need to be compiled to demonstrate it.
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