Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2010-6-28
pubmed:abstractText
Temporal sequences of allele frequencies in natural populations of Daphnia are analyzed to obtain the mean and variance of the selection coefficient for both asexual and sexual phases. In general, the alleles at enzyme loci appear to be quasi-neutral. Although significant variation exists for the estimated selection coefficients, the means are in all cases close to zero. Estimates of the variance of selection intensity are applied to existing models to demonstrate the implications of fluctuating selection for the spatial and temporal distribution of gene frequencies in Daphnia. The empirical and analytical results are shown to provide a possible solution to some previously puzzling aspects of Daphnia population genetic surveys. Neither genetic drift nor diversifying selection are necessary conditions for the local diversification of gene frequencies.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-1129717, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-16592725, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-17246615, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-17249093, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-282633, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-4018569, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-4054608, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-452981, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-4847154, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-4847155, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-535726, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-535727, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-797310, http://linkedlifedata.com/resource/pubmed/commentcorrection/17246375-929455
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Apr
pubmed:issn
0016-6731
pubmed:author
pubmed:issnType
Print
pubmed:volume
115
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
657-69
pubmed:dateRevised
2010-9-14
pubmed:year
1987
pubmed:articleTitle
The consequences of fluctuating selection for isozyme polymorphisms in Daphnia.
pubmed:affiliation
Department of Ecology, Ethology, and Evolution, Shelford Vivarium, University of Illinois, Champaign, Illinois 61820.
pubmed:publicationType
Journal Article