| Project/Area Number |
19570016
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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 | Tokyo University of Marine Science and Technology |
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Principal Investigator |
SUNOBE Tomoki Tokyo University of Marine Science and Technology, 水圏科学フィールド教育研究センター, 准教授 (00250142)
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| Co-Investigator(Kenkyū-buntansha) |
SHINOMIYA Akihiko 鹿児島大学, 水産学部, 教授 (90041722)
SAKURAI Makoto 鹿児島純心女子短期大学, 生活学科, 教授 (90321356)
MIYA Masaki 千葉県立中央博物館, 動物学研究科, 上席研究員 (30250137)
HAGIWARA Kiyoshi 横須賀市自然人文博物館, 自然部門学芸員 (50359113)
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| Project Period (FY) |
2007 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 行動生態 / 魚類 / ハゼ科 / ベニハゼ属 / 雌雄同体 / 性転換 / 分子系統 / 系統解析 |
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| Research Abstract |
In this study, mating system and phylogenetic rekationship among the gobiid genus Trimma, Priolepis and Trimmatom were investigated. Mating system was observed in aquarium. Those of Trimma tevegae, T. taylori and T. marinae were polygyny, randam mating and male-territory-visiting polygyny with sneaking, respectively. Sexuality of T. tevegae, T. taylori and T. marinae were protogyny, protandry and gonochore, respectively, corresponding to prediction by size-advantage model. Four species of Priolepis were captured as single or pairs, suggesting monogamous mating system. Phylogenetic analysis by mtDNA showed that Trimmatom was plesiomorphic, and Trimma and Priolepis were apomorphic. As Trimmatom is gonochore, the results indicate that evolution for gonochore to hermaphrodite to gonochore took place.
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