The alien and indigenous species up-to-date distribution of the Amphipoda latreille, 1816 order on the territory of Belarus

الروسية. Показано современное распределение чужеродных и аборигенных видов разноногих ракообразных (Amphipoda) в водоемах Беларуси. Указаны новые находки для видов чужеродной фауны, установлена область их распространения, которая составляет около 20-26% территории страны. В исследованных реках аборигенная фауна сохранилась в верхнем течении крупных рек и малых притоках, участки ниже по течению заселены чужеродной фауной. Для большинства видов-пришельцев наблюдается колонизация новых местообитаний и расширение приобретенного ареала, что сопровождается исчезновением видов аборигенной фауны.

إنجليزي. Amphipods (scuds) appear one of the most actively spread groups of invasive invertebrates, widely expanded over natural areas. Fresh water sources of the Republic of Belarus represent acceptor channels of invasive species. The main goal of the research presented in the article appears evaluation of the level of distribution of invasive species of amphipods and determination of modern areas of indigenous species on the territory of the Republic of Belarus. The paper deals with the research carried out to specify the prevalence of the amphipods’ invasive species as well as indigenous ones. New points of invading species detection have been discovered. Selection of the species has been carried out in 2011-2013. The experimental samples have been preserved with the help of 10% solution of formalin or 70% solution of alcohol. 14 species of amphipods have been detected, 8 of them have been described as invasive ones. Distribution of the territories between indigenous and invasive species has been analyzed. The tendency of colonization of the territory by alien species and disappearance of native species has been outlined.