| Project/Area Number |
08660067
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
蚕糸・昆虫利用学
|
|---|
| Research Institution | TAMAGAWA UNIVERSITY |
|---|
Principal Investigator |
NAKAMURA Jun Tamagawa Univ., Research Institute, Assist.Prof., 学術研究所, 講師 (30256002)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SASAKI Masami Tamagawa Univ., Fac.Agric., Prof., 農学部, 教授 (40096061)
MATSUKA Mitsuo Tamagawa Univ., Fac.Agric., Prof., 農学部, 教授 (30074339)
|
|---|
| Project Period (FY) |
1996 – 1997
|
| Project Status |
Completed (Fiscal Year 1997)
|
| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1997: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1996: ¥1,500,000 (Direct Cost: ¥1,500,000)
|
|---|
| Keywords | honeybee / division of labor / specialist / 父系多型 / DNA / マイクロサテライト |
|---|
| Research Abstract |
To analyze the specialization on tasks by a honeybee workers from both genetic and behavioral backgrounds of the bee are determined. Our hypothesis is if genetic background takes part in the specialization, all workers in particular task should be in one patriline group and if behavioral background does, they show similar ethograms or behavioral patterns.
As a specialist task we observed "undertaking" behavior. Because of the sample size was too small and kin-analysis using DNA-markers was not so clear, we could not unveil the contribution of genetic background on the specialization. Whereas, there were significant differences of lineup of behavioral contents and performance frequency of each content between workers that took specialized task and ones took only general tasks. Also specialized workers showed hypersensitive response against exogenous stimuli.
Only 1 % of worker bees showed specialization, so specialization is thought to be subjected genetic background, rather it suggests that a portion of workers from (several) kin group (s) has set lower threshold to response and they are the potential specialists.
It is necessary to use methods with higher sensitivity on DNA markers, and for this purpose we have introduced sequence-gel electrophoresis. Further we need another specialized task which can be observed in ordinary s-zed colony because the observation hive base sampling can limited the size of specialist samples.
|
