2016 Fiscal Year Final Research Report
Covariance and phenotypic plasticity of risk sensitivity and social rank
| Project/Area Number |
26650114
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Animal physiology/Animal behavior
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2014-04-01 – 2017-03-31
|
| Keywords | 神経経済学 / 意思決定 / 社会的採餌理論 / 神経行動学 / 鳥類 |
|---|
| Outline of Final Research Achievements |
Risk means a situation in which the future consequence (gain and loss) is only stochastically estimated, while it is not determined in each instance because of the accompanying big variance. Behavioral studies in domestic chicks and captive birds (sympatric 3 species of tits) revealed that these birds generally avoid risk and choose safe (less variable) option. However, it is possible that the risk sensitivity is context-dependent and modulated by variety of social and non-social factors. In the present study, by using domesticated songbirds (Java sparrows), possible dependence was systematically surveyed, namely on social rank, sex, pair formation, and energy budget, but no clear effects were found. On the other hand, in domestic chicks, forced experience of risky food facilitated the development of impulsive choices. Risk experienced during juvenile period may control the behavioral development.
|
| Free Research Field |
生物学
|
