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Article

Molecular Analysis of Two Endemic Squalius Species: Evidence for Intergeneric Introgression among Cyprinids and Conservation Issues

by
Damir Valić
1,*,
Matej Kristan Mirković
2,
Višnja Besendorfer
3 and
Emin Teskeredžić
4
1
Laboratory for Biological Effects of Metals, Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
2
Department of Biology, Faculty of Science, University of Zagreb, Ravnice 48, 10000 Zagreb, Croatia
3
Division of Molecular Biology, Department of Biology, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
4
Laboratory for Aquaculture and Pathology of Aquatic Organisms, Division of Molecular Biology, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
*
Author to whom correspondence should be addressed.
Fishes 2024, 9(1), 4; https://doi.org/10.3390/fishes9010004
Submission received: 17 November 2023 / Revised: 14 December 2023 / Accepted: 17 December 2023 / Published: 20 December 2023
(This article belongs to the Special Issue Biomonitoring and Conservation of Freshwater & Marine Fishes)
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Abstract

Conservation of indigenous species, especially endemic ones, is of the utmost importance. Morphological determination of species is usually not sufficient; therefore, molecular phylogenetic analyses of the Illyrian chub, Squalius illyricus, and the Zrmanja chub, Squalius zrmanjae, from the Krka River were performed. For the genetic characterization of the mitochondrial gene cytochrome b and the non-coding nuclear region Cyfun P, 15 specimens from each species were subjected to analysis. The obtained sequences were aligned with similar ones from GenBank to determine the taxonomic and phylogenetic position of these species. The obtained molecular results imply that S. zrmanjae from the Krka River has a nuclear region that resembles Dalmatian rudd, Scardinius dergle. This result implies an introgression event and the transfer of genetic information between the two genera. The investigated species are on the IUCN Red List of Threatened Species, their biological data are scarce, and further investigation and protection are needed.
Keywords: Leuciscidae; cyt b; endemic species; Squalius Leuciscidae; cyt b; endemic species; Squalius
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MDPI and ACS Style

Valić, D.; Mirković, M.K.; Besendorfer, V.; Teskeredžić, E. Molecular Analysis of Two Endemic Squalius Species: Evidence for Intergeneric Introgression among Cyprinids and Conservation Issues. Fishes 2024, 9, 4. https://doi.org/10.3390/fishes9010004

AMA Style

Valić D, Mirković MK, Besendorfer V, Teskeredžić E. Molecular Analysis of Two Endemic Squalius Species: Evidence for Intergeneric Introgression among Cyprinids and Conservation Issues. Fishes. 2024; 9(1):4. https://doi.org/10.3390/fishes9010004

Chicago/Turabian Style

Valić, Damir, Matej Kristan Mirković, Višnja Besendorfer, and Emin Teskeredžić. 2024. "Molecular Analysis of Two Endemic Squalius Species: Evidence for Intergeneric Introgression among Cyprinids and Conservation Issues" Fishes 9, no. 1: 4. https://doi.org/10.3390/fishes9010004

APA Style

Valić, D., Mirković, M. K., Besendorfer, V., & Teskeredžić, E. (2024). Molecular Analysis of Two Endemic Squalius Species: Evidence for Intergeneric Introgression among Cyprinids and Conservation Issues. Fishes, 9(1), 4. https://doi.org/10.3390/fishes9010004

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