Assessing genetic structure with multiple classes of molecular markers: a case study involving the introduced fire ant Solenopsis invicta

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Type
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Publications
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Title
Assessing genetic structure with multiple classes of molecular markers: a case study involving the introduced fire ant Solenopsis invicta
Journal
Molecular Biology and Evolution
Author(s)
Ross K. G., Shoemaker D. D., Krieger M. J., DeHeer C. J., Keller L.
ISSN
0737-4038
Publication state
Published
Issued date
04/1999
Peer-reviewed
Oui
Volume
16
Number
4
Pages
525-43
Notes
Comparative Study Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. --- Old month value: Apr
Abstract
We used 30 genetic markers of 6 different classes to describe hierarchical genetic structure in introduced populations of the fire ant Solenopsis invicta. These included four classes of presumably neutral nuclear loci (allozymes, codominant random amplified polymorphic DNAs (RAPDs), microsatellites, and dominant RAPDs), a class comprising two linked protein-coding nuclear loci under selection, and a marker of the mitochondrial DNA (mtDNA). Patterns of structure revealed by F statistics and exact tests of differentiation were highly concordant among the four classes of neutral nuclear markers, although the microsatellites were the most effective markers for detecting structure. The results from the mtDNA complemented those from the neutral nuclear markers by revealing that strong limitations to female-mediated gene flow were the cause of the local structure registered by the nuclear markers. The pattern of structure inferred from the selected nuclear loci was markedly different from the patterns derived from the other sets of markers but was predictable on the basis of the presumed mode of selection acting on these loci. In general, the results for all six classes of markers can be explained by known features of the social and reproductive biology of fire ants. Thus, the results from these diverse sets of markers, combined with detailed natural history data, provide an unusually complete picture of how the fundamental evolutionary forces of gene flow, drift, and selection govern the distribution of genetic variation within and between fire ant populations.
Keywords
Animals Ants/enzymology/*genetics DNA, Mitochondrial/genetics Evolution, Molecular Gene Frequency Genes, Insect Genetic Markers Genetics, Population Genotype Insect Proteins/genetics Microsatellite Repeats Random Amplified Polymorphic DNA Technique Selection (Genetics) Variation (Genetics)
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Web of science
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24/01/2008 18:39
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20/08/2019 16:22
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