| Project/Area Number |
23370011
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | Kyoto University |
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Principal Investigator |
SOTA Teiji 京都大学, 理学(系)研究科(研究院), 教授 (00192625)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAMI Yasuoki 神戸大学, 大学院・人間発達環境学研究科, 准教授 (60432358)
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| Research Collaborator |
OKUZAKI Yutaka 京都大学, 大学院・理学研究科, 研究員
FUJIMAKI Kotaro 京都大学, 大学院・理学研究科, 博士後期課程
FUJISAWA Tomochika 京都大学, 大学院・理学研究科, 研究員
NISHIMURA Osamu 京都大学, 大学院・理学研究科, 研究員
YAZAWA Shigenobu 京都大学, 大学院・理学研究科, 研究員
TAKAHASHI Tetsumi 京都大学, 大学院・理学研究科, 研究員
NAGATA Nobuaki 東北大学, 大学院・生命科学研究科, 研究員
TAKAHASHI Sogo 神戸大学, 大学院・人間発達環境学研究科, 博士前期課程
MARUYAMA Wataru 神戸大学, 大学院・人間発達環境学研究科, 博士前期課程
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2013: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2012: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2011: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
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| Keywords | 性選択 / 交尾器 / 種分化 / 適応 / 精子競争 / 性的対立 / トランスクリプトーム / 遺伝子発現比較 / 交尾器形態 / 適応進化 / オオオサムシ亜属 / 昆虫 / 発現遺伝子 / オサムシ / 遺伝子 |
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| Research Abstract |
This study aimed to reveal sexual selection for exaggerated genital morphology and genes related to species-specific genital morphology in the ground beetle group Ohomopterus, which exhibited a marked interspecific divergence in shape and size in male and female genitalia. In an experiment to study selection on genital size using within-species variations, matching in genital sizes between the sexes was favored for sperm competition, and it was suggested that sexual conflict or reproductive interference with another species needs to be considered for an explanation of exaggeration of genital morphology. In a comparison of transcriptomes between two sister species with marked differences in genital morphology, some genes with differential expressions between the species were found, but these were unlikely to be the genes affecting species-specific genital morphology.
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