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The effect of industrial pollution from a smeltery of heavy metals in Mitrovica (Kosova) on the duration of Drosophila melanogaster preadult development
Author(s) -
Bajrakti Ismet Dervish,
Alija Avdulla,
Gashi Agim,
Halili Fetah
Publication year - 2012
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.26.1_supplement.lb505
Subject(s) - drosophila melanogaster , population , pollution , biology , heavy metals , toxicology , environmental pollution , zoology , genetics , chemistry , gene , ecology , environmental chemistry , environmental science , environmental protection , medicine , environmental health
The effect of enormous environmental pollution by heavy metals on genes controlling the duration of wild type Drosophila melanogaster preadult development in the region of a lead and zinc smeltery in Mitrovica (Kosova) was investigated. Also the natural population of this species from the vicinity of Prizren, which represents an unpolluted area, was exposed near the smeltery of heavy metals for intervals of 100 and 175 days. The second chromosome of wild type flies was isolated and transferred either in homozygous (+′/+′) and heterozygous (+′/+″) state using Cy/Pm line. Individuals of this line contain dominant mutations (Cy – curly wings and Pm – plum eyes) and long inversions, which prevent recombination with analyzed chromosomes, with the end result of stable heredity in the descendants. The shorter total duration of preadult development (9,5 days) had the population exposed to pollution for 100 days; whereas the population exposed for 175 days and that from the region with enormous pollution had a very similar total means values of duration of preadult development (10,5 days respectively 10,8 days) as the control (10,7 days). We propose that such enormous environmental pollution by heavy metals for 100 days exposure caused a high number of dominant mutations on genes controlling duration of D. melanogaster preadult development on the second chromosome. However, such mutations with their carriers are eliminated by natural selection after 175 days exposure.