2016 Fiscal Year Final Research Report
Social behavior and sex determination in Anemonefish
Project/Area Number |
24570075
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Morphology/Structure
|
Research Institution | Iwaki Meisei University |
Principal Investigator |
Iwata Eri いわき明星大学, 科学技術学部, 教授 (70382786)
|
Project Period (FY) |
2012-04-01 – 2017-03-31
|
Keywords | 社会行動 / 性決定 / 社会順位 |
Outline of Final Research Achievements |
Anemone fishes are sex changing fish, living in tropical sea waters of the Indo-Pacific, forming a social unit consisting of a monogamous pair and several nonbreeders. We studied the relationship between social rank maintenance and sex differentiation using false clown anemone fish. Oral administration of steroid hormones to sexually immature individuals revealed that cortisol did not involve in gonadal sex differentiation, which is induced by gonadal aromatase gene. Dominant behaviors were induced by estradiol, not by androgen. The mechanisms of sex differentiation and behavior expression may be different from other teleost, because the dominant individual in a group must be a female in anemone fishes.
|
Free Research Field |
動物行動学
|