Abstract

The non-indigenous fishes in the fauna of Ukraine: a potentia ad actum

Highlights

  • Natural range expansion is one mechanism of evolutionary diversification and the maintenance of biodiversity (Parmesan and Yohe 2003)

  • This is a review of the literature on non-indigenous fishes in Ukrainian freshwaters and coastal marine waters

  • In some cases it is problematic to evaluate the origin of the species in a particular region, i.e. are they native or non-indigenous?

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Summary

Introduction

Natural range expansion is one mechanism of evolutionary diversification and the maintenance of biodiversity (Parmesan and Yohe 2003). From the 1940s to 1960s, documentation on the “improvement” of fauna and their production were widely provided (Movchan 1954; Vovk 1976) These activities, which included the purposeful introduction of non-indigenous species, resulted in considerable changes to aquatic biodiversity. The Ukrainian coastal waters of the Black Sea and Sea of Azov have low salinities relative to the neighboring Mediterranean, forming a specific zoogeographic region that is inhabited mainly by brackish-water organisms (Slastenenko 1959) This region is most suitable for invasion by species that favor brackish conditions, which have the widest distributed on Earth (Vinogradov 1986). Ponto-Caspian species, which are native inhabitants of the Black Sea (including the Sea of Azov), Caspian Sea and their basins These are relicts of the old brackish Pontian Sea-Lake (Zaitsev and Mamaev 1997; Zaitsev 1998). The aim of our work was to clarify the terminology and summarize the documentation in the literature that relate to alien and native fauna in Ukraine and adjacent waters

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