Abstract

The study of leeches from Lake Gusinoe and its adjacent area offered us the possibility to determine species diversity. As a result, an updated species list of the Gusinoe Hirudinea fauna (Annelida, Clitellata) has been compiled. There are two orders and three families of leeches in the Gusinoe area: order Rhynchobdellida (families Glossiphoniidae and Piscicolidae) and order Arhynchobdellida (family Erpobdellidae). In total, 6 leech species belonging to 6 genera have been identified. Of these, 3 taxa belonging to the family Glossiphoniidae (Alboglossiphonia heteroclita f. papillosa, Hemiclepsis marginata, and Helobdella stagnalis) and representatives of 3 unidentified species (Glossiphonia sp., Piscicola sp., and Erpobdella sp.) have been recorded. The checklist gives a contemporary overview of the species composition of leeches and information on their hosts or substrates. The validity of morphological identification of each taxon has been verified by phylogenetic approach with a molecular marker adopted for a DNA barcoding of most invertebrates.

Highlights

  • Lake Gusinoe located 60 km from the famous Lake Baikal is one of the largest freshwater bodies in the Baikal basin and the largest in the Trans-Baikal region

  • The lake formed as a result of breakthrough of the Temnik River runoff towards the Lake Gusinoe depression and the partial filling of the depression via Lake Tsaidam by Tsagan-Ghol channel [1]

  • Additional samples were collected in the adjacent water bodies, the Zagustay River flowing into the lake in its northern part and Lake Tsaidam adjoining to the southeastern shore of Lake Gusinoe and connecting with the latter by a channel

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Summary

Introduction

Lake Gusinoe located 60 km from the famous Lake Baikal is one of the largest freshwater bodies in the Baikal basin and the largest in the Trans-Baikal region. The origin of this lake goes back to the period of 1740–1749 according to the data collected by the exiled Decembrist Nikolay Bestuzhev. The catchment area of the Gusinoe basin is 924 km. The catchment area of the Gusinoe basin is 924 km2

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