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Natural Hybridization in Spined Loaches of the Genera Cobitis and Sabanejewia (Cobitidae)

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Abstract

A detailed description of the phenotypically hybrid spined loach caught in the Malyi Kyzylagachskii Bay is given in comparison with the three known species of loach fish from the Bay basin: the Caspian spined loach Sabanejewia caspia, Cobitis saniae, and the Khvalynskaya spined loach C. amphilekta. Hybridization of the first two species supported by their sympatry, overlapping spawning periods, and a noticeable difference in numbers in co-inhabited biotopes is confirmed. The extremely low frequency of hybridization of the Caspian spined loach and C. saniae is explained by the significant differences in the ecology of spawning and in the spawning behavior of the two species.

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ACKNOWLEDGMENTS

We are deeply grateful to the local resident Namik Ganbarov for help in collecting the material in 2018.

Funding

Taxonomic studies of Ponto-Caspian fish on the basis of museum collections are carried out in the framework of Moscow State University’s Noah’s Ark project and state task AAAA-A16-116021660077-3.

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Correspondence to E. D. Vasil’eva.

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Conflict of interests. The authors declare that they have no conflict of interest.

Statement on the welfare of animals. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.

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Translated by S. Avodkova

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Vasil’eva, E.D., Vasil’ev, V.P. Natural Hybridization in Spined Loaches of the Genera Cobitis and Sabanejewia (Cobitidae). J. Ichthyol. 59, 776–785 (2019). https://doi.org/10.1134/S0032945219050163

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