Lebedeva D, Ziętara M, Mendsaikhan B, Ermolenko A, Lumme J. Survivors from a Pliocene Climatic Catastrophe: Gyrodactylus (Platyhelminthes, Monogenea) Parasites of the Relict Fishes in the Central Asian Internal Drainage Basin of Mongolia. Diversity. 2023; 15(7):860. https://doi.org/10.3390/d15070860
Survivors from a pliocene climatic catastrophe : Gyrodactylus (Platyhelminthes, Monogenea) parasites of the relict fishes in the Central Asian Internal drainage basin of Mongolia
|Author:||Lebedeva, Daria1; Ziętara, Marek2; Mendsaikhan, Bud3;|
1Karelian Research Center, Institute of Biology, Pushkinskaya St., 11, Petrozavodsk 185910, Russia
2Department of Evolutionary Genetics and Biosystematics, University of Gdańsk, Wita Stwosza St., 59, 80-308 Gdańsk, Poland
3Institute of Geography and Geoecology, Baruun Selbiin 15, 4th Khoroo, Chingeltei Duureg, Ulaanbaatar 15170, Mongolia
4Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, 159, Prospekt Stoletiya, Vladivostok 690022, Russia
5Ecology and Genetics, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland
|Online Access:||PDF Full Text (PDF, 5.4 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe20230921134708
Multidisciplinary Digital Publishing Institute,
|Publish Date:|| 2023-09-21
We investigated the Gyrodactylus ectoparasites on relict fishes in the isolated endorheic Central Asian Internal drainage basin in Mongolia (The Hollow) and placed them into the global phylogenetic framework based on internal transcribed spacer regions of the nuclear ribosomal DNA (ITS). Much of the rich Pliocene lacustrine ichthyofauna is extinct. We sampled five riverine survivors: Altai osmans Oreoleuciscus humilis and O. potanini (Leuciscidae), Mongolian grayling Thymallus brevirostris (Salmonidae), and stone loaches Barbatula conilobus and B. cobdonensis (Nemacheilidae). We found eight species of the subgenus Gyrodactylus (Limnonephrotus) and four of G. (Gyrodactylus). Nine species were identified as taxa described earlier, and three were described as new. The endemic Mongolian grayling carried four species, only one of wageneri group typical to salmonids (Gyrodactylus radimi sp. nov.), two of nemachili group (G. zavkhanensis sp. nov., G. pseudonemachili Ergens and Bychowsky, 1967), and G. amurensis Akhmerov, 1952 of subgenus G. (Gyrodactylus). G. pseudonemachili was also found on osman and loach. A parasite clade typical for Nemacheilidae was overrepresented by five species (G. tayshirensis sp. nov. on Barbatula conilobus, G. mongolicus Ergens and Dulmaa, 1970, G. nemachili Bychowsky, 1936). Relaxed host specificity mentioned already by Ergens and Dulmaa was evident. In the updated global ITS phylogenies of the two freshwater-restricted subgenera, the parasites from the Mongolian relict populations assumed positions concordant with a hypothesis of multiple ancient introductions from the Euro-Siberian fauna, strong rarefaction and three cases of endemic divergence.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
1181 Ecology, evolutionary biology
The study was supported by the Joint Russian–Mongolian Biological Expedition of the Russian Academy of Sciences and the Mongolian Academy of Sciences (2011–2012) and by the state order 122032100130-3 (D.L.). Funding for Oulu lab was from the Academy of Finland to J.L.
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).