2016 Fiscal Year Final Research Report
Adaptive significance of cooperative behaviors between founding queens of Polyrhachis moesta and the effect of biogenic amine on the queen behaviors
Project/Area Number |
25450483
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Insect science
|
Research Institution | Tokyo University of Agriculture and Technology |
Principal Investigator |
Satoh Toshiyuki 東京農工大学, (連合)農学研究科(研究院), 准教授 (80242238)
|
Research Collaborator |
MATSUI Shingo
|
Project Period (FY) |
2013-04-01 – 2017-03-31
|
Keywords | 協力行動 / 社会性 / オクトパミン / 血縁 / 敵対行動 / 社会性昆虫 / 栄養交換 / 創設女王 |
Outline of Final Research Achievements |
The study of cooperative behaviors between non-kin individuals in invertebrates is important for the better understanding of the general rule of social evolution. Founding queens of an ant species, Polyrhachis moesta, cooperatively overwinter and found new colonies, however, matured colonies become single-queened, and those queens are hostile with each other. This study revealed that: (1) founding queens are cooperative before overwintering irrespectively they were nestmates or not, however, they become cooperative to only nestmates after overwintering; (2) brain octopamine level of queens from mature colonies is significantly higher than founding queens; (3) octopamine fed founding queens can be induced hostility against different founding queens. Those findings will contribute the better understanding of factors supporting the maintenance of cooperative behaviors.
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Free Research Field |
行動生態学
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