Document Detail


Selection at the Y chromosome of the African buffalo driven by rainfall.
MedLine Citation:
PMID:  17971851     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Selection coefficients at the mammalian Y chromosome typically do not deviate strongly from neutrality. Here we show that strong balancing selection, maintaining intermediate frequencies of DNA sequence variants, acts on the Y chromosome in two populations of African buffalo (Syncerus caffer). Significant correlations exist between sequence variant frequencies and annual rainfall in the years before conception, with five- to eightfold frequency changes over short time periods. Annual rainfall variation drives the balancing of sequence variant frequencies, probably by affecting parental condition. We conclude that sequence variants confer improved male reproductive success after either dry or wet years, making the population composition and dynamics very sensitive to climate change. The mammalian Y chromosome, interacting with ecological processes, may affect male reproductive success much more strongly than previously thought.
Authors:
Pim van Hooft; Barend J Greyling; Herbert H T Prins; Wayne M Getz; Anna E Jolles; Armanda D S Bastos
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2007-10-31
Journal Detail:
Title:  PloS one     Volume:  2     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2007  
Date Detail:
Created Date:  2007-10-31     Completed Date:  2008-07-15     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e1086     Citation Subset:  IM    
Affiliation:
Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa. pim.vanhooft@wur.nl
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MeSH Terms
Descriptor/Qualifier:
Animals
Behavior, Animal
Buffaloes / genetics*
Ecology
Gene Frequency
Genetic Variation
Haplotypes
Male
Models, Genetic
Polymorphism, Genetic
Rain*
Selection, Genetic
Tandem Repeat Sequences
Y Chromosome / genetics*
Comments/Corrections

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