Abstract Objective Amaranths leaves are rich in ascorbic acid and polyphenol compounds which have antioxidant activity. The aim of this study was to evaluate their vivo effect consumption Amaranth leaf extract on activity, catalase enzyme activity H 2 O induced oxidative stress Drosophila melanogaster flies assessed. Results Consumption associated with increased survival exposure o a dose depen...

To determine how the modern copy number (5) of hsp70 genes in Drosophila melanogaster evolved, we localized the duplication events that created the genes in the phylogeny of the melanogaster group, examined D. melanogaster genomic sequence to investigate the mechanisms of duplication, and analyzed the hsp70 gene sequences of Drosophila orena and Drosophila mauritiana. The initial two-to-four hs...

The method of air pollution level evaluation of urban landscapes on the basis of D. melanogaster cohort analysis has been suggested. The method implies the binding to the landscape areas of the city. Within each landscape area traps and cultivators for D. melanogaster have been installed in sanitary-protective zones of various enterprises as well as on the background territory with the least le...

The method of air pollution level evaluation of urban landscapes on the basis of D. melanogaster cohort analysis has been suggested. The method implies the binding to the landscape areas of the city. Within each landscape area traps and cultivators for D. melanogaster have been installed in sanitary-protective zones of various enterprises as well as on the background territory with the least le...

Drosophila melanogaster and its close relatives are used extensively in comparative biology. Despite the importance of phylogenetic information for such studies, relationships between some melanogaster species group members are unclear due to conflicting phylogenetic signals at different loci. In this study, we use twelve nuclear loci (eleven coding and one non-coding) to assess the degree of p...

B A N D (1963) has reported that in Drosophila melanoguster significant viability changes among random heterozygotes for lethal, semilethal and normal chromosomes could be induced when the same chromosome combinations were tested in wide and narrow temperature range conditions having a mean temperature of 25°C. In a study utilizing only lethal and normal chromosomes, TOBARI (1966) found that vi...

Homologs of the Drosophila clock gene per have recently been cloned in Lepidopteran and Blattarian insect species. To assess the extent to which clock mechanisms are conserved among phylogenetically distant species, we determined whether PER protein from the silkmoth Antheraea pernyi can function in the Drosophila circadian timing system. When expressed in transgenic Drosophila, the silkmoth PE...

Individuals of many species, including invertebrates, have been shown to use social information in mate choice, notably by extracting information from the mating performance of opposite sex conspecifics, a process called "mate-choice copying" (MCC). Here, we performed four experiments with Drosophila melanogaster to investigate two aspects of MCC methodology: whether (i) providing positive and ...

the A8, and it has been shown that the gene double sex (dsx) represses growth in the former, probably by repressing decapentaplegic (dpp) expression. We show here that the absence of Abd-B or homothorax (hth) in this segment also increases growth and activates the expression of dMyc and dpp. The effects on the size of the A9 can be rescued if dpp activity is reduced. Neither Abd-B, dsx, nor hth...

We find that in a Listeria monocytogenes/Drosophila melanogaster infection model, L. monocytogenes grows according to logistic kinetics, which means we can measure both a maximal growth rate and growth plateau for the microbe. Genetic variation of the host affects both of the pathogen growth parameters, and they can vary independently. Because growth rates and ceilings both correlate with host ...