Document Detail

Absence of linkage disequilibria between chromosomal arrangements and mtDNA haplotypes in natural populations of Drosophila subobscura from the Balkan Peninsula.
MedLine Citation:
PMID:  22376001     Owner:  NLM     Status:  Publisher    
The genetic structure of Drosophila subobscura from the Balkan Peninsula was studied with respect to restriction site polymorphism of mitochondrial DNA in populations from the Derventa River Gorge and Sicevo Gorge (Serbia). To investigate the role of cytonuclear interactions in shaping mitochondrial DNA variability in natural populations of this species, the study was complemented with the analysis of linkage disequilibria between mitochondrial haplotypes and chromosomal inversion arrangements. Similar to other populations of D. subobscura, two main haplotypes (I and II) were found, as well as a series of less common ones. The frequencies of haplotypes I and II accounted for 25.8% and 71.0%, respectively, in the population from the Derventa River Gorge, and for 32.4% and 58.1%, respectively, in the population from Sicevo Gorge. One of the haplotypes harbored a large insertion (2.7 kb) in the A+T rich region. The frequency distribution of both haplotypes did not depart from neutrality. Contrary to prior studies, we did not detect any significant linkage disequilibrium between the two most frequent mtDNA haplotypes and any of the chromosomal arrangements in either of the populations. We conclude that linkage disequilibrium is not a general occurrence in natural populations of D. subobscura, and we discuss how transient coadaptations, ecologically specific selective pressures, and demographics could contribute to population-specific patterns of linkage disequilibrium.
Mihailo Jelić; José A Castro; Zorana Kurbalija Novičić; Bojan Kenig; Danica Dimitrijević; Marija Savić Veselinović; Miloš Jovanović; Dragomir Milovanović; Marina Stamenković-Radak; Marko Andjelković
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-29
Journal Detail:
Title:  Genome / National Research Council Canada = Genome / Conseil national de recherches Canada     Volume:  -     ISSN:  1480-3321     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-3-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8704544     Medline TA:  Genome     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
a Faculty of Biology, University of Belgrade, Studentski trg 3, 11000 Belgrade, Serbia.
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