Evoluční historie, genetická diverzita a vliv lidské činnosti na vybrané jelcovité (Leuciscidae) z jižního Balkánu

Viñuela Rodríguez, Nuria

- ABSTRACT - Fishes represent the most diverse group of vertebrates on Earth, with freshwater fishes accounting for half of this diversity, and occupying a mere 0.01 % of the world's water surface. The Balkans are considered a European hotspot of biodiversity, and its southern section is recognized as centre of ichthyological diversity, characterized by its exceptional richness and endemicity. Within the southern Balkans, the Ionian ecoregion stands out as one of the most isolated ichthyological regions in Europe due to its very complex geological history and the variety of events that influenced its ichthyofaunal composition. All fish species inhabiting the Ionian region are endemic, and most of them display reduced distribution areas with a marked geographic pattern. The western Aegean region, on the contrary, is considered a species-poor ecoregion within the southern Balkans, despite also harbouring a significant number of endemic species. However interesting the region of the southern Balkans is in terms of its ichthyofauna, there is a lack of knowledge for many of the fish species inhabiting them. In this thesis, we address some of these knowledge gaps for two representative genera, Pelasgus and Telestes, of the most diverse family in the area (Leuciscidae), with the aim to better understand the...

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