Abstract
The variability of morphological characters and coloration features used for identification of the species Cobitis saniae has been studied using the materials from the collection of the Zoological Museum of Lomonosov Moscow State University, which includes voucher samples with genetically confirmed species status, in order to clarify the dynamics of the diversity of spined loaches in Transcaucasia in the anthropogenic period. Significant variability of many characteristics at the intraspecific level has been revealed. Previously proposed taxonomic keys do not allow to identify correctly C. saniae and C. faridpaki, which are accepted in the status of cryptic allopatric species differentiated by the analysis of the mitochondrial genome. The characters are suggested that make it possible to differentiate C. saniae from C. taenia and C. melanoleuca, inhabiting the basin of the Caspian Sea, and from two species known from water bodies within the modern range of C. saniae: Khvalynskaya spined loach C. amphilekta, common in the basin of the Kyzylagach Bay in the 1930s, and a new species C. derzhavini described from the Kura River basin.
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REFERENCES
Abdurakhmanov, Yu.A., Ryby presnykh vod Azerbaidzhana (Freshwater Fishes of Azerbaijan), Baku: Akad. Nauk AzSSR, 1962.
Barach, G.P., Fauna Gruzii. Tom 1. Presnovodnye ryby (Fauna of Georgia, Vol. 1: Freshwater Fishes), Tbilisi: Akad. Nauk GruzSSR, 1941.
Chen, Y.-X., Chen, H., He, D.-K., and Chen, Y.-F., Two new species of the genus Cobitis (Cypriniformes: Cobitidae) from South China, Zool. Syst., 2018, vol. 43, no. 2, pp. 156–168.
Eagderi, S., Jouladeh-Roudbar, A., Jalili, P., et al., Taxonomic status of the genus Cobitis Linnaeus, 1758 (Teleostei: Cobitidae) in the southern Caspian Sea basin, Iran with description of a new species, FishTaxa, 2017a, vol. 2, no. 1, pp. 48–61.
Eagderi, S., Jouladeh-Roudbar, A., Nasri, M., Sayyadzadeh, G., and Esmaeili, H.R., Taxonomic status of the genus Cobitis (Teleostei: Cobitidae) in the Namak Lake basin, Iran, Iran. J. Ichthyol., 2017b, vol. 4, no. 2, pp. 131–139.
Elanidze, R.F., Ikhtiofauna rek i ozer Gruzii (Ichthyofauna of Rivers and Lakes of Georgia), Tbilisi: Metsniereba, 1983.
Erk’akan, F., Özdemir, F., and Özeren, S.C., Two new species of the genus Cobitis Linnaeus (Teleostei: Cobitidae) from Turkey, FishTaxa, 2017, vol. 2, no. 2, pp. 82–89.
Freyhof, J., Bayçelebí, E., and Geiger, M., Review of the genus Cobitis in the Middle East, with the description of eight new species (Teleostei: Cobitidae), Zootaxa, 2018, vol. 4535, no. 1, pp. 1–75.
Gambetta, L., Sulla variabilità del cobite fluviatile (Cobitis taenia) e sul rapporto numerico dei sessi, Boll. Mus. Zool. Anat., Comp. Univ. Torino, 1934, vol. 44, pp. 297–324.
Kasymov, A.G., Gidrofauna Nizhnei Kury i Mingechaurskogo vodokhranilitsha (Hydrofauna of the lower Kura and Mingechaur Reservoir), Baku: Akad. Nauk AzSSR,1965.
Kazancheev, E.N., Ryby Kaspiiskogo morya (Fishes of the Caspian Sea), Moscow: Legkaya Pishchevaya Prom-st, 1981.
Kottelat, M. and Freyhof, J., Handbook of European Freshwater Fishes, Berlin: Kottelat and Freyhof, 2007.
Mousavi-Sabet, H., Vasil’eva, E.D., Vatandoust, S., and Vasil’ev, V.P., Cobitis faridpaki sp. nova—a new spined loach species (Cobitidae) from the southern Caspian Sea basin (Iran), J. Ichthyol., 2011, vol. 51, no. 10, pp. 925–931. https://doi.org/10.1134/S0032945211100055
Nakajima, J., Cobitis takenoi sp. n. (Cypriniformes, Cobitidae): a new spined loach from Honshu Island, Japan, ZooKeys, 2016, vol. 568, pp. 119–128.
Naseka, A.M., Zoogeographical freshwater divisions of the Caucasus as a part of the West Asian Transitional Region, Tr. Zool. Inst., Ross. Akad. Nauk, 2010, vol. 314, no. 4, pp. 469–492.
Ninua, N.Sh. and Japoshvili, B.O., Check list of fishes of Georgia, Proc. Inst. Zool. Tbilisi, 2008, vol. 23, pp. 163–176.
Özdemir, F., Cobitis fusunae, a new spined loach species (Teleostei: Cobitidae) from the Sultan Marsh, (Kayseri, Turkey), Hacettepe J. Biol. Chem., 2019, vol. 46, no. 4, pp. 593–599. https://doi.org/10.15671/HJBC.2018.265
Perdices, A., Ozeren, C.S., Erkakan, F., and Freyhof, J., Diversity of spined loaches from Asia Minor in a phylogenetic context (Teleostei: Cobitidae), PLoS One, 2018, vol. 13, no. 10, p. e0205678. https://doi.org/10.1371/journal.pone.0205678
Saitoh K. and Aizawa, H., Local differentiation within the striated spined loach (the striata type of Cobitis taenia complex), Jpn. J. Ichthyol., 1987, vol. 34, no. 3, pp. 334–345.
Vasil’eva, E.D., Comparative morphological analysis of two spined loach (genus Cobitis, Cobitidae) populations differing in a number of spots at the base of the caudal fin, Vopr. Ikhtiol., 1984, vol. 24, no. 1, pp. 43–53.
Vasil’eva, E.D., Redescription, morphological-ecological characteristic, and distribution of Cobitis granoei (Teleostei, Cobitidae), Zool. Zh., 1988, vol. 67, no. 7, pp. 1025–1036.
Vasilev, V.P. and Vasil’eva, E.D., The karyological diversity in spined loaches from genera Cobitis and Sabanejewia, Proc. VIII Congr. of European Ichthyologists on Fishes and Their Environment, Oviedo, 1994, p. 67.
Vasil’eva, E. D. and Vasil’ev, V. P., Sibling species in genus Cobitis (Cobitidae), Cobitis rossomeridionalis sp. nova, J. Ichthyol., 1998, vol. 38, no. 8, pp. 580–590.
Vasil’eva, E.D. and Vasil’ev, V.P., Cobitis amphilekta sp. nova, a new species of spined loaches (Cobitidae, Cypriniformes) from the Caspian Sea basin, J. Ichthyol., 2012, vol. 52, no. 3, pp. 200–206.
Vasil’eva, E.D., Osinov, A.G., and Vasil’ev, V.P., The problem of reticular speciation in vertebrates: the diploid-triploid-tetraploid complex in the genus Cobitis (Cobitidae). I. Diploid species, J. Ichthyol., 1989, vol. 29, no. 7, pp. 35–47.
Vasil’eva, E.D., Kim, D., Vasil’ev, V.P., et al., Cobitis nalbanti, a new species of spined loach from South Korea, and redescription of Cobitis lutheri (Teleostei: Cobitidae), Zootaxa, 2016, vol. 4208, no. 6, pp. 577–591. https://doi.org/10.11646/zootaxa.4208.6.5
Vasil’eva, E.D., Solovyeva, E.N., Levin, B.A., and Vasil’ev, V.P., Cobitis derzhavini sp. nova—a new spined loach species (Teleostei: Cobitidae) discovered in the Transcaucasia, J. Ichthyol., 2020, vol. 60, no. 2, pp. 135–153. https://doi.org/10.1134/S0032945220020198
Vasilyeva, E.D., Solovyeva, E.N., Levin, B.A., and Vasil’ev, V.P., Taxonomic diversity of spined loaches (Cobitidae: Cobitis) in the Caucasus, Proc. XVI European Congr. of Ichthyology, Abstracts of Papers, Lausanne, 2019, pp. 242–246.https://doi.org/10.3389/conf.fmars.2019.07.00097
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Taxonomic studies of fish in the Ponto-Caspian Region on the basis of museum collections are carried out within the framework of the State Project no. AAAA-A16-116021660077-3.
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Translated by D. Martynova
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Vasil’eva, E.D., Vasil’ev, V.P. Dynamics of Diversity of Spined Loaches of Genus Cobitis, Inhabiting Caucasus, during the Anthropogenic Period According to the Data of Museum Collections. I. Morphological Variability and Diagnostic Characters of Cobitis saniae (Cobitidae). J. Ichthyol. 60, 868–884 (2020). https://doi.org/10.1134/S0032945220060090
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DOI: https://doi.org/10.1134/S0032945220060090