Trends of Eurasian Perch () mtDNA Region Genetic Diversity within the Hydro-Systems of the Eastern Part of the Baltic Sea in the Anthropocene.

The intraspecific genetic diversity of freshwater fish inhabiting hydro-systems of the macrogeographic area spreading from the Black to Baltic Seas requires comprehensive investigation from fundamental and practical perspectives. The current study focused on the involvement of the mtDNA region in the adaptability and microevolution of within phylogeographic and anthropogenic contexts. We sequenced a 627 bp fragment encompassing the region and used it for genetic analysis of 193 perch caught in Latvia, Lithuania, Belarus, and Ukraine, representing natural and anthropogenically impacted populations.

Quality of DNA extracted from freshwater fish scales and mucus and its application in genetic diversity studies of and .

Studies on genetic diversity require biological material containing a reliable source of DNA that can be extracted and analyzed. Recently, non-invasive sampling has become a preferred sampling method of biological material. The suitability of a less invasive approach that involves obtaining samples by swabbing the fish skin (including live, non-anesthetized fish) should be considered.

The Genetic Diversity and Structure of the European Turtle Dove .

The European Turtle Dove, , a long-distance migrant wintering in Africa, is a widespread Palearctic species. This species is classified as vulnerable and is undergoing a long-term demographic decline. The results of the previous study (based on mitochondrial (mtDNA) cytochrome-b () sequences of birds from Western and Southern Europe) indicated that the species was not genetically structured.