2010 Fiscal Year Final Research Report
Laboratory behavioral-observations and experiments on reproductive tactics of cooperative breeding fishes
| Project/Area Number |
20570023
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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 | Osaka City University |
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Principal Investigator |
MASANORI Kohda Osaka City University, 大学院・理学研究科, 教授 (70192052)
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| Co-Investigator(Kenkyū-buntansha) |
KATSUTOSHI Watanabe 京都大学, 大学院・理学研究科, 准教授 (00324955)
KAZUNORI Matsumoto 香川大学, 教育学部, 准教授 (90452664)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 脊椎動物 / 共同繁殖 / 利他行動 / 利害の対立 / 操作 / 欺き / マキャベリ的知性仮説 / 社会の複雑さ / 協同的一妻多夫 |
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| Research Abstract |
Our laboratory experiments suggested following reproductive strategic behaviors in the cooperatively polyandrous cichlid fish J.transcriptus : (1) females conducted pseudo-spawning during trio-spawning with two males much more frequently than monogamous spawning, (2) males will recognize the degree of paternity depending on the numbers of ejaculations, and decide the degree of parental care, and (3) females likely recognize how males recognize the paternity in each spawning via the frequency of spawning and pseudo-spawning. Our experiments also show that this fish will conduct transitive inference. Our results suggest the possibility of evolution of 'Macaberian intelligence' in fish.
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[Presentation]2010
Author(s)
安田裕樹, 幸田正典
Organizer
日本魚類学会2010年度大会
Place of Presentation
津
Year and Date
20100900
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[Presentation]2010
Author(s)
オマーミン, 武山智博, 幸田正典
Organizer
日本魚類学会2010年度大会
Place of Presentation
津
Year and Date
2010-09-25
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