Experimental study on potential plasticity of the care-taker' s sex in fishes
| Project/Area Number |
20570022
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Ecology/Environment
|
|---|
| Research Institution | Hiroshima University |
|---|
Principal Investigator |
YOICHI Sakai 広島大学, 大学院・生物圏科学研究科, 准教授 (70309946)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
KUNIYOSHI Hisato 広島大学, 大学院・生物圏科学研究科, 講師 (60335643)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
KUWAMURA Tetsuo 中京大学, 国際教養学部, 教授 (00139974)
|
|---|
| Project Period (FY) |
2008 – 2010
|
| Project Status |
Completed (Fiscal Year 2010)
|
| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Keywords | 保育行動 / 性的役割 / Dascyllus属 / スズメダイ科 / 脳下垂体 / 硬骨魚類 / 雌雄異体 / 性転換 / 性的役割の可変性 / 神経ペプチド / カワスズメ科 |
|---|
| Research Abstract |
We examined potential ability of parental care in female damselfishes, in which males alone perform egg-guarding and egg-care behaviors in nature. We removed males from breeding pairs just after spawning. Of 3 species being studied genera Dascyllus and Chrysiptera, two showed egg-care behaviors to spawned eggs in females. The behavioral components of the females' egg care were slightly different from those of males. By real-time PCR analyses, we confirmed that females performing egg care tended to have higher hormone levels in pituitary than normal females.
|
Report
(4 results)
Research Products
(5 results)
