Variability of the mitochondrial CO1 gene in native and invasive populations of Harmonia axyridis Pall. comparative analysis.

Our study is focused on original and publicly accessible data on the intraspecific variability of the barcoding DNA fragment in ladybirds Harmonia axyridis Pall analysis. The complete dataset consists of 39 haplotypes, 16 of which we identified for the first time. The intra-population and geographical variability of the barcoding fragment was studied for seven populations of the western and eastern groups of the native range and in six invasive populations, in which 25 of the 39 haplotypes are found.

Spiroplasma infection in Harmonia axyridis - Diversity and multiple infection.

The heritable endosymbiotic bacterium Spiroplasma is found in the harlequin ladybird Harmonia axyridis. The proportion of beetles infected with Spiroplasma in different native H. axyridis populations varies from 2% to 49%.

[Genotypic Diversity of Wolbachia pipientis in Native and Invasive Harmonia axyridis Pall., 1773 (Coleoptera, Coccinellidae) Populations].

The distribution and variability of reproductive symbiotic Wolbachia pipientis bacteria were studied in seven native and six invasive H. axyridis populations. Wolbachia-infected individuals were found in two invasive and two native populations.

[Population variation of elytral ridge occurrence in ladybirds Harmonia axyridis Pallas].

Intra- and interpopulation variation of occurrence of elytral ridge (neutral morphological character with the known genetic determination) in some populations of Harmonia axyridis from the Russian part of the species area was studied for the first time. Comparative analysis of the frequencies of the recessive allele r of a corresponding gene and the frequencies of recessive homozygotes in 32 samples from 16 localities has shown the lack of temporal and microgeographic variations of this trait. The character of its geographic variation confirms the hypothesis advanced earlier on the basis of analysis of elytral pattern variation about the existence of two subspecies of H.

[Pharmacokinetic interaction of antibiotics and pathogenetic agents in suppurative meningitis].

The effect of the widely used pathogenetic agents, such as detoxicating fluids and diuretics on the pharmacokinetics of antibiotics, i.e. benzylpenicillin, ampicillin and levomycetin was studied.