全球智库信息集成服务系统(G2TT): Evolutionary suicide as a consequence of runaway selection for greater aggregation tendency.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1016/j.jtbi.2012.09.033
	Evolutionary suicide as a consequence of runaway selection for greater aggregation tendency.
	Nonaka E; Parvinen K; Brannstrom Å
发表日期	2013
出处	Journal of Theoretical Biology : 96-104
出版年	2013
语种	英语
摘要	Aggregation of individuals is a common phenomenon in nature. By aggregating, individuals can reap benefits but may also be subject to associated costs from increased competition. The benefits of aggregation can depend on population density, which in turn can be affected by aggregation when it determines reproductive success of individuals. The Allee effect is often considered to be one of the factors that can explain the evolution of aggregation behavior. We investigated this hypothesis with a mathematical model which integrates population dynamics and evolution. Individuals gain synergistically from aggregation but suffer from scramble competition with aggregation tendency as an evolving trait. We found that aggregation behavior can stabilize the population dynamics and reduce population growth. The results show that the Allee effect alone is not sufficient for aggregative behavior to evolve as an evolutionarily stable strategy. We also found that weak local competition does not promote aggregation due to feedback from the population level: under low competition, the population can achieve high density such that aggregation becomes costly rather than beneficial. Our model instead for aggregation to evolve as an evolutionarily stable strategy we need to consider other factors such as inter-patch dispersal to new patches and avoidance of excessively large groups.
主题	Evolution and Ecology (EEP)
关键词	Adaptive dynamics Allee effect Invasion fitness Site-based models
URL	http://pure.iiasa.ac.at/id/eprint/10545/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/129848
推荐引用方式 GB/T 7714	Nonaka E,Parvinen K,Brannstrom Å. Evolutionary suicide as a consequence of runaway selection for greater aggregation tendency.. 2013.