Data from: Individual inversions or their combinations: which is the main selective target in a natural population of Drosophila subobscura?
Zivanovic, Goran, University of Belgrade
Arenas, Concepció, University of Barcelona
Mestres, Francesc, University of Barcelona
Published Nov 24, 2015 on Dryad.
Cite this dataset
Zivanovic, Goran; Arenas, Concepció; Mestres, Francesc (2015). Data from: Individual inversions or their combinations: which is the main selective target in a natural population of Drosophila subobscura? [Dataset]. Dryad. https://doi.org/10.5061/dryad.1h7gr
It is generally accepted that chromosomal inversions have been key elements in adaptation and speciation processes. In this context, D. subobscura has been, and still is, an excellent model species due to its rich chromosomal polymorphism. In this species, many analyses from natural populations have demonstrated the adaptive potential of individual inversions (and their overlapped combinations, the so called arrangements). However, little information is available on the evolutionary role of combinations generated by inversions located in homologous and non-homologous chromosomes. The aim of this research is to ascertain whether these combinations are also a target for natural selection. For this objective, we have studied the inversion composition of homologous and non-homologous chromosomes from a D. subobscura sample collected in a well-studied population, Mount Avala (Serbia). No significant deviation from H-W expectations was detected, and when comparing particular karyotypic combinations, likelihood ratios close to 1 were obtained. Thus, it seems that for each pair of homologous chromosomes inversions no deviation from randomness was detected. Finally, no linkage disequilibrium was observed between inversions located in different chromosomes of the karyotype. For all these reasons it can be assumed that, at the cytological level, the individual inversions rather than their combinations in different chromosomes are the main target of selection.
Drosophila subobscura karyotypes
Data on D. subobscura karyotypes from Mt. Avala. Jun-July 2014
Zivanovic et al. Karyotypes.xlsx
Drosophila subobscura polymorphism
Data on Drosophila subobscura polymorphism for the whole chromosomal set. Data are from Mt. Avala, Serbia.