scholarly journals Individual inversions or their combinations: which is the main selective target in a natural population of Drosophila subobscura ?

2015 ◽  
Vol 29 (3) ◽  
pp. 657-664 ◽  
Author(s):  
G. Zivanovic ◽  
C. Arenas ◽  
F. Mestres
Keyword(s):  
Natural Population ◽  
Drosophila Subobscura ◽  
Selective Target

scholarly journals Lack of habitat choice in a natural population of Drosophila subobscura

Heredity ◽  
1980 ◽  
Vol 44 (2) ◽  
pp. 193-199 ◽  
Author(s):  
W D Atkinson ◽  
J A Miller
Keyword(s):  
Natural Population ◽  
Habitat Choice ◽  
Drosophila Subobscura

Population dynamics of the 2 major mitochondrial DNA haplotypes in experimental populations of Drosophila subobscura

Genome ◽  
2005 ◽  
Vol 48 (6) ◽  
pp. 1010-1018 ◽  
Author(s):  
Pedro Oliver ◽  
Joan Balanyà ◽  
Maria Misericòrdia Ramon ◽  
Antònia Picornell ◽  
Lluis Serra ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Natural Population ◽  
Linear Trend ◽  
Natural Populations ◽  
Drosophila Subobscura ◽  
Random Drift ◽  
Significant Linear Trend ◽  
Low Frequencies ◽  
Mitochondrial Haplotypes ◽  
Experimental Populations

The evolution of Drosophila subobscura mitochondrial DNA has been studied in experimental populations, founded with flies from a natural population from Calvià (Majorca, Balearic Islands, Spain). This population, like others founded in Europe, is characterized by the presence of 2 very common (>95%) mitochondrial haplotypes (named I and II) and rare and endemic haplotypes that appear at very low frequencies. Four experimental populations were established with flies having a heterogeneous nuclear genetic background, which was representative of the composition of the natural population. The populations were started with haplotypes I and II at an initial frequency of 50% each. After 33 generations, the 2 haplotypes coexisted. Random drift could be rejected as the only force responsible for the observed changes in haplotype frequencies. A slight but significant linear trend favouring a mtDNA (haploid) fitness effect has been detected, with a nonlinear deviation that could be due to a nuclear component. An analysis of chromosomal arrangements was made before the foundations of the cages and at generation 23. Our results indicated that the hypothesis that the maintenance of the frequencies of haplotypes I and II in natural populations could be due to their association with chromosomal arrangements remains controversial.Key words: natural selection, random drift, cytonuclear interactions, chromosomal arrangements, mtDNA haplotypes, Drosophila subobscura.

scholarly journals Mitochondrial DNA Haplotype Frequencies in Natural and Experimental Populations of Drosophila subobscura

Genetics ◽  
1998 ◽  
Vol 149 (3) ◽  
pp. 1377-1382 ◽  
Author(s):  
José García-Martínez ◽  
José Aurelio Castro ◽  
Misericordia Ramón ◽  
Amparo Latorre ◽  
Andrés Moya
Keyword(s):  
Mitochondrial Dna ◽  
Natural Population ◽  
Linear Trend ◽  
Statistical Evidence ◽  
Drosophila Subobscura ◽  
Random Drift ◽  
Low Frequencies ◽  
Mitochondrial Haplotypes ◽  
Haplotype Frequencies ◽  
Experimental Populations

Abstract 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.

scholarly journals Wing-size heritability in a natural population of Drosophila subobscura

Heredity ◽  
1999 ◽  
Vol 82 (1) ◽  
pp. 100-106 ◽  
Author(s):  
Dorcas Juana Orengo ◽  
Antonio Prevosti
Keyword(s):  
Natural Population ◽  
Drosophila Subobscura ◽  
Wing Size

scholarly journals THE GENETICS OF DROSOPHILA SUBOBSCURA POPULATIONS. XIV. FURTHER DATA ON LINKAGE DISEQUILIBRIA

Genetics ◽  
1980 ◽  
Vol 95 (3) ◽  
pp. 757-768 ◽  
Author(s):  
M Loukas ◽  
C B Krimbas ◽  
K Morgan
Keyword(s):  
Natural Population ◽  
Drosophila Subobscura ◽  
First Order ◽  
Linkage Disequilibria

ABSTRACT Data coming from one natural population of D. subobscura, that of Crete, are presented in detail and examined for nonrandom associations of genes and gene arrangements. This population and four others previously studied are reanalyzed for the detection of higher than first-order interactions. Only firstorder interactions are important and statistically significant, especially those concerning genes and inversions in which these genes are included. The paucity of linkage disequilibria detected is remarkable, and we argue that it does not depend on the methods of study, rather it is genuine. We further argue that most of the disequilibria detected are probably due to mechanisms based on epistatic selection.

scholarly journals Linkage disequilibria between mtDNA haplotypes and chromosomal arrangements in a natural population of Drosophila subobscura

Heredity ◽  
2002 ◽  
Vol 89 (2) ◽  
pp. 133-138 ◽  
Author(s):  
P Oliver ◽  
J A Castro ◽  
A Picornell ◽  
M M Ramon ◽  
E Solé ◽  
...  
Keyword(s):  
Natural Population ◽  
Drosophila Subobscura ◽  
Linkage Disequilibria ◽  
Mtdna Haplotypes
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