Morphology and zoogeography of the burrower-like gammarid Gammarus koshovi (Bazikalova, 1946) (Crustacea, Amphipoda, Gammaridae) – An overlooked and poorly known species in the Siberian fauna
Open Access
- 13 October 2021
- journal article
- research article
- Published by Museum National D'Histoire Naturelle in European Journal of Taxonomy
- Vol. 774, 178-199
- https://doi.org/10.5852/ejt.2021.774.1541
Abstract
A comprehensive survey of several lakes in the Tuva Republic of Russia yielded, besides the ubiquitous Gammarus lacustris, the discovery of a small freshwater, lacustrine amphipod not previously recorded in this area. A comparative study of the Tore-Khol Lake gammarid population, probably conspecific with Gammarus koshovi (Bazikalova, 1946) originating from Khubsugul Lake, was conducted. The species, G. koshovi, is characterized by a specific habitus: a small-sized compact body, all limbs shortened, carpi of pereopods (PIII and PIV) reduced, coxal plates broad, and pereopod dactyli sturdy. It has been suggested that juveniles of the euryoecious G. lacustris or other large species could be confused with the relatively small G. koshovi. Consequently, we decided to present the distribution of gammarid species throughout south Siberia and Mongolia, referring to the sequences of works primarily by Soviet authors, which may be hard to access by international readers. We discuss affinity with related groups, distribution, and ecology of G. koshovi to better understand their evolution. Additionally, the zoobenthic species diversity of widely represented groups in the ecosystems of Tore-Khol Lake is briefly reviewed. An identification key for the Siberian Gammarus with 10 species is provided.Keywords
This publication has 40 references indexed in Scilit:
- Uvs Nuur: A Sentinel for Climate Change in Eastern Central AsiaPublished by Springer Science and Business Media LLC ,2020
- Response of shallow subterranean freshwater amphipods to habitat dryingSubterranean Biology, 2018
- Species composition and structure of macrozoobenthos in Lake Ulaagchny Khar (Mongolia)Inland Water Biology, 2015
- A review of Gammaridae (Crustacea: Amphipoda): the family extent, its evolutionary history, and taxonomic redefinition of generaZoological Journal of the Linnean Society, 2015
- Diversity and Distribution of Freshwater Amphipod Species in Switzerland (Crustacea: Amphipoda)PLOS ONE, 2014
- Diversification of low dispersal crustaceans through mountain uplift: a case study ofGammarus(Amphipoda: Gammaridae) with descriptions of four novel speciesZoological Journal of the Linnean Society, 2014
- Eocene habitat shift from saline to freshwater promoted Tethyan amphipod diversificationProceedings of the National Academy of Sciences of the United States of America, 2011
- MongoliaPublished by Springer Science and Business Media LLC ,2006
- Notes on the Cladoceran and Copepod Fauna of the Uvs Nuur Basin (Northwest Mongolia)International Review of Hydrobiology, 2005
- Hydrobiological Outline of the Mongolian LakesInternational Review of Hydrobiology, 1979