DROSOPHILA MELANOGASTER MG. AS THE TEST-OBJECT FOR SCREENING XENOBIOTICS ON ACARICIDAL ACTIVITY

S. V. Belokon

Abstract


 

The development of new effective test systems for screening xenobiotics on biological activity, including its possible harmful influence on the organism is the modern challenge. Test systems of eukaryotic origin are needed for testing of xenobiotics on their gonadotoxical, embryotoxic, teratogenic, and carcinogenic effects. Such testing should include the monitoring of genetic effects of bioactive compounds and the possible mutagenic effect. The Drosophila melanogaster Mg. is very convenient test object as a classical genetics object, for which the genome is fully sequenced. It is convenient and easy to find out the frequency of crossingover in different parts of the genome, and study the key indicators of vitality and ontogenetic adaptation (fertility, longevity, survival under stress conditions, etc.) on Drosophila. The crossover frequency, in our opinion, can be an integral factor for the general state of genotype.so we could use the mark of genetic recombination frequency as one of the indicators of the impact of xenobiotics.

In this study we examined the possibility of using Drosophila melanogaster Mg. (Diptera, Drosophilidae) as a test object for screening xenobiotics on acaricidal activity. Sensitivity of flies to acaricides piridaben (Sanmayt) and proparhit (Omayt) was studied by their fitness, longevity, fertility, and frequency of meiotic recombination in the area b-vg second chromosome. It was found that the studied compounds - piridaben and proparhit have significant  influence on vitality of D. melanogaster. The presence of these acaricides in the nutrition of flies testifies the harmful influence on their crossingover and reduced fecundity and longevity. We suggested to use the D. melanogaster as a test object for screening xenobiotics on acaricidal activity.

Keywords: Drosophila, the test object, acaricides, crossingover, fertility, longevity.

http://dx.doi.org/10.7905/bbmspu.v5i1.970


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DOI: http://dx.doi.org/10.15421/2015011

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