| Project/Area Number |
20570023
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Ecology/Environment
|
|---|
| Research Institution | Osaka City University |
|---|
Principal Investigator |
MASANORI Kohda Osaka City University, 大学院・理学研究科, 教授 (70192052)
|
|---|
| 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)
|
|---|
| Project Period (FY) |
2008 – 2010
|
| Project Status |
Completed (Fiscal Year 2010)
|
| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
|
|---|
| 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 / 推移的推察 / 雌による父性の操作 / 個体認知 / 認知様式 / 繁殖成功 / 一妻多夫 / 血縁ヘルパー / 雌雄の対立 / 父性の操作 / 雌の操作 / 繁殖戦術 / 行動生態学 / 共同的一妻多夫 / 意思決定 / 成長抑制 |
|---|
| 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.
|
