2013 Fiscal Year Final Research Report
Manipulation of species barrier with cosmopolitan species
| Project/Area Number |
23570017
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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 |
Ecology/Environment
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KONDO Natsuko 独立行政法人国立環境研究所, 生物圏環境研究領域, NIES特別研究員 (10414369)
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| Project Period (FY) |
2011 – 2013
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| Keywords | Callosobruchus / Wolbachia / 生殖隔離 / 細胞質不和合 / 速い進化 |
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| Research Abstract |
Strong cytoplasmic incompatibility caused by Wolbachia was thought to be a speciation mechanism among bean weevils in genus Callosobruchus. Artificial Wolbachia injection and removal experiments with tetracycline showed that Wolbachia did not play a role of speciation among C. analis, C. maculatus, C. rhodesianus, and C. sabinnotetus. On the other hand, Wolbachia removal and reintroducing experiments among 9 strains of C. analis revealed that the CI level became more benign as the length of coevolution between C. analis and Wolbachia was longer. CI levels induced by Wolbachia were products of coevolution between Wolbachia and its hosts in C. analis.
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