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Multilevel selection in a gradient
- Source :
-
Ecological Modelling . Nov2007, Vol. 208 Issue 2-4, p159-164. 6p. - Publication Year :
- 2007
-
Abstract
- Abstract: In this study we consider a population subdivided in groups. Each group is connected to two neighboring groups by means of migration channels. The migration channels are used with different probability, according to a gradient that gives a preferential direction of colonization. Within groups we have a fast population dynamics modeled with a Moran process. Between groups we have a process of colonization selection at low migration rate, based on the propagule model. We consider resident and invading individuals, with the invading individuals having a relative fitness r. Groups composed only of invaders will also have a relative group fitness R. We show that, independently of the value of r, a strong gradient reduces the advantage of groups with large fitness and thus works against group selection. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03043800
- Volume :
- 208
- Issue :
- 2-4
- Database :
- Academic Search Index
- Journal :
- Ecological Modelling
- Publication Type :
- Academic Journal
- Accession number :
- 27052220
- Full Text :
- https://doi.org/10.1016/j.ecolmodel.2007.05.017