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Mitochondrial DNA haplotype frequencies in natural and experimental populations of Drosophila subobscura

Garcia-Martinez, J. (Universitat de Valencia, Valencia, Spain.) ; Castro, J.A ; Ramon, M ; Latorre, A ; Moya, A

Genetics (Austin), 1998-07, Vol.149 (3), p.1377-1382 [Periódico revisado por pares]

United States: Genetics Soc America

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Título:
Mitochondrial DNA haplotype frequencies in natural and experimental populations of Drosophila subobscura
Autor: Garcia-Martinez, J. (Universitat de Valencia, Valencia, Spain.) ; Castro, J.A ; Ramon, M ; Latorre, A ; Moya, A
Assuntos: ADN ; ANALYTICAL METHODS ; Animals ; Animals, Laboratory ; Animals, Wild ; BALEARIC ISLANDS ; Biology ; Deoxyribonucleic acid ; DNA ; DNA, Mitochondrial - genetics ; Drosophila - genetics ; DROSOPHILA SUBOBSCURA ; ESPAGNE ; ESPANA ; Europe ; EVOLUCION ; EVOLUTION ; Evolution, Molecular ; GENE ; GENE FREQUENCY ; GENERATIONS ; GENES ; GENETIC DRIFT ; Genetic Variation ; GENETICA ; GENETICS ; GENETIQUE ; GENOTIPOS ; GENOTYPE ; GENOTYPES ; Haplotypes ; LABORATORY POPULATIONS ; Mediterranean Islands ; MITOCHONDRIA ; MITOCHONDRIE ; MITOCONDRIA ; Models, Genetic ; Models, Statistical ; NEUTRAL EVOLUTION ; RESTRICTION ENDONUCLEASE ANALYSIS ; Restriction Mapping ; SPAIN ; TECHNIQUE ANALYTIQUE ; TECNICAS ANALITICAS
É parte de: Genetics (Austin), 1998-07, Vol.149 (3), p.1377-1382
Notas: 1997075561
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Descrição: The evolution of Drosophila subobscura mitochondrial DNA has been studied in experimental populations, founded with flies from a natural population from Esporles (Majorca, Balearic Islands, Spain). This population, like other European ones, is characterized by the presence of two very common (>96%) mitochondrial haplotypes (called I and II) and rare and endemic haplotypes that appear at very low frequencies. There is no statistical evidence of positive Darwinian selection acting on the mitochondrial DNA variants according to Tajima's neutrality test. Two experimental populations, with one replicate each, were established with flies having a heterogeneous nuclear genetic background, which was representative of the composition of the natural population. Both populations were started with the two most frequent mitochondrial haplotypes, but at different initial frequencies. After 13 to 16 generations, haplotype II reached fixation in three cages and its frequency was 0.89 by generation 25 in the fourth cage. Random drift can be rejected as the force responsible for the observed changes in haplotype frequencies. There is not only statistical evidence of a linear trend favoring a mtDNA (haploid) fitness effect, but also of a significant nonlinear deviation that could be due to a nuclear component.
Editor: United States: Genetics Soc America
Idioma: Inglês

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Mitochondrial DNA haplotype frequencies in natural and experimental populations of Drosophila subobscura

Garcia-Martinez, J. (Universitat de Valencia, Valencia, Spain.) ; Castro, J.A ; Ramon, M ; Latorre, A ; Moya, A

United States: Genetics Soc America

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