Genetička diferencijacija unutar vrste Drosophila subobscura sa različitih staništa u Srbiji

Abstract

Adaptation to different environmental conditions is a natural phenomenon that potentially leads to population subdivision. We surveyed genetic differentiation in inversion polymorphism within populations of Drosophila subobscura sampled in three ecologically different forest communities. The analysis of inversion polymorphism revealed significant differences between some pairs of samples in some gene arrangement frequencies of the A, U, and E chromosomes and some karyotype combination frequencies of the U chromosome, but significant differentiation within populations was not observed. It cannot be decided which evolutionary forces are responsible for the observed variability in inversion polymorphism.

Adaptacija na različite sredinske uslove može uticati na diferencijaciju u okviru populacija. U ovom radu analizirana je genetička diferencijacija po inverzionom polimorfizmu u okviru populacija D. subobscura sakupljenih u tri ekološki različita staništa. Utvrđene su značajne razlike u učestalosti pojedinih hromozomskih aranžmana A, U i E hromozoma, i učestalosti pojedinih kombinacija kariotipova U hromozoma, ali nije utvrđena diferencijacija u okviru populacija. Razmatrani su evolutivni faktori koji bi mogli da budu odgovorni za uočenu varijabilnost u inverzionom polimorfizmu.