2012 Fiscal Year Final Research Report
Social evolution theory via higher order relatedness
| Project/Area Number |
23870009
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Ecology/Environment
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| Research Institution | The Graduate University for Advanced Studies |
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Principal Investigator |
OHTSUKI Hisashi 総合研究大学院大学, 先導科学研究科, 助教 (50517802)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 協力の進化 / 血縁度 / 血縁淘汰 / 進化ゲーム / クオラムセンシング |
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| Research Abstract |
Kin selection is one of the theories that explains the evolution of altruism, which means a behavior that benefits other individuals in terms of survival or reproductive success. I have extended this theory, which originally concentrated on kinship between two individuals, to incorporate interactions of more than two individuals. For that purpose, I have generalized genetic relatedness for two individuals to a higher order one which represents genetic similarity of three individuals or more. As an application, I have studied quorum sensing, a form of microbial communication by chemical signals. I have shown that quorum sensing evolves under the existence of high genetic relatedness between individuals.
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