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Diverzita a speciace jepic (Ephemeroptera) z Kavkazu a přilehlých oblastí
HRIVNIAK, Ľuboš
This dissertation thesis is focused on the diversity and evolutionary history of mayflies (Ephemeroptera) from the Caucasus, one of the most biologically diverse areas of the Palaearctic realm. The introduction details general information about the evolutionary mechanisms leading to the high diversity of mountain biota, the processes driving evolutionary diversification in aquatic insects, and the current state of knowledge on the diversity and distribution of mayflies in the Caucasus. The core of the thesis consists of five published articles and one manuscript, which are divided into four chapters. The first chapter deals with the diversity and distribution of mayflies from Armenia, the second and third are focused on diversity, integrative taxonomy, and identification of Epeorus (Caucasiron), one of the most diverse mayflies in the Caucasus. The last chapter is focused on the origin, historical biogeography, and evolutionary diversification of Caucasiron, the model group selected for the evolutionary study of mayflies from the Caucasus. The chapter describes when and under which circumstances Caucasian mayfly endemism and diversity developed. The thesis is concluded with a detailed summary of the results, and future perspectives in the research of Caucasian mayflies.
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