Support Center Support Center. Populations were strongly subdivided, as indicated by fixation indices F ST of 0. The distribution of the tsetse flies G. Fifty-three alleles among six loci were recorded G. Analysis of variance in allele frequencies In G. Each allele was assigned a value relative to the same DNA bp standard by measuring their distances from the origin.
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Jerome Goudet – Google Scholar Citations
Journal of Goudte Ecology. Matings were random within populations. Moreover, high mutation rates also depress F ST estimates, leading to overestimates of gene flow. Populations were strongly subdivided, as indicated by fixation indices F ST of 0. Analyses of variance The percentage of genetic variation among G. An independent assay of genetic variation gudet help to confirm or deny the picture of highly differentiated populations among which there is little gene flow.
The primers for micro-satellite loci were: Bulletin of Entomological Research. Principles of Population Genetics. There was, however, little difference in the allelic frequency distributions among subspecies, so they were combined in Fig.
Assuming selective neutrality at diploid loci, it can be shown that the expected level of heterozygosity diversity with respect to the foundation stock is 0. An estimate of 0. The frequency of presumptively null alleles caused by mutations at annealing sites was estimated according to a maximum likelihood method in which only null fstag are scored Brookfield, The corresponding F ST estimates were 0.
Materials and methods Sampling Glossina m. A goudwt disequilibrium would obtain as tsetse populations recovered from their earlier declines in density and range caused by the rinderpest epizootic of — Ford, The variance components, hence the F statistics, all differed significantly from zero. Its distribution, however, is discontinuous and patchy, extending from Senegal in west Africa, easterly to the lowlands in western Ethiopia and southwards to Botswana, Zimbabwe and Mozambique.
Medical Insects and Arachnids.
Laboratory breeding studies indicate that the subspecies cross freely in cages but there is post-mating reproductive isolation. Clearly these taxa have a common ancestor and share large regions of their genomes, but each fstst evolved different adaptations particularly to climate Robinson et al.
Mean heterozygosities varied from 0. Single locus statistics and genetic differentiation fstaf and among natural populations The number of alleles per locus varied from six in GpCAG to 21 in Gmm22 Table 2.
Microsatellite diversities in subspecies Mean heterozygosities varied from 0.
FSTAT – Phylogenetic Analysis – Biology Software Net
Makuti and Changara vs. In a hierarchical classification, G. Population genetics of G. Clearly, tsetse populations were genetically differentiated.