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Similarity of Karyotype Structure in Three Mormyrus Species (Mormyridae) from the White Nile and Omo River Tributaries (Ethiopia)

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Abstract

We studied the mitotic chromosome sets in three elephantfish species of the genus Mormyrus (Mormyridae, Osteoglossiformes) occurring in the White Nile and Omo-Turkana basins in south-western Ethiopia. The karyotype structure (2n = 50, FN = 84) appeared to be similar in M. caschive, M. hasselquistii and M. kannume. The Mormyrus is 14th mormyrid genera studied cytogenetically and its karyotype is unique within the family because of the least number of uni-armed chromosomes.

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ACKNOWLEDGMENTS

We gratefully acknowledge the JERBE coordinator A.A. Darkov (Severtsov Institute of Ecology and Evolution RAS, Moscow) for logistic support, S.E. Cherenkov (Severtsov Institute of Ecology and Evolution RAS, Moscow) for sharing field operations and assistance in collecting material, E.Yu. Krysanov (Severtsov Institute of Ecology and Evolution RAS, Moscow) for precious help at different stages of our work, M.V. Mina (Koltsov Institute of Developmental Biology RAS, Moscow) for critical comments on the manuscript.

Funding

This work is financially supported by the Russian Foundation for Basic Research, project no. 18-34-00638 for SS and benefits also (at the stage of manuscript preparation) from the Russian Science Foundation, project no. 19-14-00218 for AG.

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Authors and Affiliations

  1. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia

    S. A. Simanovsky, D. A. Medvedev & A. S. Golubtsov

  2. National Fishery and Aquatic Life Research Center, Ethiopian Institute of Agricultural Research, Sebeta, Ethiopia

    Fekadu Tefera

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  1. S. A. Simanovsky
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  2. D. A. Medvedev
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  3. Fekadu Tefera
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  4. A. S. Golubtsov
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Correspondence to S. A. Simanovsky.

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Simanovsky, S.A., Medvedev, D.A., Tefera, F. et al. Similarity of Karyotype Structure in Three Mormyrus Species (Mormyridae) from the White Nile and Omo River Tributaries (Ethiopia). J. Ichthyol. 61, 323–326 (2021). https://doi.org/10.1134/S003294522102017X

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