Document Detail


Population viscosity can promote the evolution of altruistic sterile helpers and eusociality.
MedLine Citation:
PMID:  18460428     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Because it increases relatedness between interacting individuals, population viscosity has been proposed to favour the evolution of altruistic helping. However, because it increases local competition between relatives, population viscosity may also act as a brake for the evolution of helping behaviours. In simple models, the kin selected fecundity benefits of helping are exactly cancelled out by the cost of increased competition between relatives when helping occurs after dispersal. This result has lead to the widespread view, especially among people working with social organisms, that special conditions are required for the evolution of altruism. Here, we re-examine this result by constructing a simple population genetic model where we analyse whether the evolution of a sterile worker caste (i.e. an extreme case of altruism) can be selected for by limited dispersal. We show that a sterile worker caste can be selected for even under the simplest life-cycle assumptions. This has relevant consequences for our understanding of the evolution of altruism in social organisms, as many social insects are characterized by limited dispersal and significant genetic population structure.
Authors:
Laurent Lehmann; Virginie Ravigné; Laurent Keller
Related Documents :
14982018 - Margo and me. ii. the role of narrative building in child analytic technique.
8424188 - Issues of gender in gamete donation.
11870098 - Ethical considerations on preimplantation genetic diagnosis for hla typing to match a f...
8561188 - Disclosure of donor insemination: parental attitudes.
22694158 - Sexual and intimacy health of roman catholic priests.
17288628 - Perceptions of weight and associated factors of adolescents in jiangsu province, china.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  275     ISSN:  0962-8452     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2008 Aug 
Date Detail:
Created Date:  2008-07-01     Completed Date:  2008-09-23     Revised Date:  2013-06-05    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  1887-95     Citation Subset:  IM    
Affiliation:
Department of Biological Sciences, Stanford University, Stanford, CA 94305-5020, USA. lehmann@stanford.edu
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Altruism*
Animals
Biological Evolution*
Competitive Behavior*
Diploidy
Female
Haploidy
Male
Models, Genetic*
Population Dynamics
Reproduction
Selection, Genetic*
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Genetic analyses reveal independent domestication origins of Eurasian reindeer.
Next Document:  Competition among plant species that interact with their environment at different spatial scales.