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As rickettsioses may be severe diseases and Rickettsia prowazekii is a potential agent of bioterrorism, highly efficient diagnostic techniques are required to detect rickettsiae in patients. We developed a nested PCR assay using single-use primers targeting single-use gene fragments present in the genomes of both Rickettsia conorii and R. prowazekii. We used this "suicide" PCR with DNA from 103...

The article considers the original results of observations and analysis catches atherina (Atherina boyeri caspia (Eichwald)) by months stationary nets in Terek-Caspian fishery subarea (Republic Dagestan). size-weight age indicators spawning stocks have been characterized. For first time recent years conditions for western part Middle Northern Caspian are described. All biostatistical obtained (...

Migratory birds must make complex decisions to use wind their advantage during flight and increasing performance is particularly important while crossing ecological barriers. Age-related differences in how deal with have suggested experience improves necessary skills gaining positive support. However, support between age groups over barriers rarely been tested, our understanding of acquire rela...

Aim . Analysis of changes in quantitative and structural indicators phytoplankton the western central part middle Caspian Sea over past decades, including according to remote sensing data. Material Methods The data was obtained 2004–2008 2019–2022 at different seasons year 40 stations Sea. Phytoplankton samples were taken from 4–6 layers. A total 300 analyzed. Determination species counting num...