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Comparative cytogenetics of three endemic gudgeons of Gobio Cuvier, 1816 (Ostariophysi: Cypriniformes: Gobionidae)

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Abstract

Karyotypes and chromosomal banding characteristics of Gobio fahrettini Turan, Kaya, Bayçelebi, Aksu & Bektaş, 2018, Gobio gymnostethus Ladiges, 1960 and Gobio insuyanus Ladiges, 1960, from Anatolia, Turkey, were examined using conventional cytogenetic techniques (Giemsa, C-banding and Ag-NOR). The species studied had invariably diploid chromosome number 2n = 50 and karyotype composed of one uniarmed and 24 biarmed chromosomes. The largest chromosome pair in the karyotypes was a submetacentric pair. C-positive heterochromatin located on the pericentromeres of most of the chromosomes. Also, heterochromatic blocks were located on two chromosome pairs in G. gymnostethus whereas in one chromosome pair in G. fahrettini. The nucleolus organizer regions were located terminally on the p arms of one submetacentric chromosome pair in all three species. Morphologically differentiated sex chromosomes were not detected. This study is the first chromosomal study of three endemic Gobio species from Anatolia.

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Data availability

All data were given in the manuscript and the references parts.

Code availability

Leica DM 3000 (Leica Microsystems GmbH, Germany) microscope and AKAS software (Argenit Microsystem, Turkey) were used to take metaphase photographs.

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  1. Department of Molecular Biology and Genetics, Faculty of Science, Bartın University, 74100, Bartın, Turkey

    Sevgi Unal Karakus

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  1. Sevgi Unal Karakus
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All experimental procedures were applied according to Local Ethical Commission from the Kırşehir Ahi Evran University, Turkey (with decision of numbered 140,421/07/2).

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Unal Karakus, S. Comparative cytogenetics of three endemic gudgeons of Gobio Cuvier, 1816 (Ostariophysi: Cypriniformes: Gobionidae). Iran J Sci Technol Trans Sci 45, 1933–1940 (2021). https://doi.org/10.1007/s40995-021-01209-x

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  • DOI: https://doi.org/10.1007/s40995-021-01209-x

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