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Genetic Structure and Diversity of Native Tench (Tinca tinca L. 1758) Populations in Hungary—Establishment of Basic Knowledge Base for a Breeding Program

Authors :
Fatema Ali Al Fatle
Erika Edviné Meleg
Zoltán Sallai
Gergely Szabó
Eszter Várkonyi
Béla Urbányi
Balázs Kovács
Tamás Molnár
István Lehoczky
Source :
Diversity, Vol 14, Iss 5, p 336 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

Tench is a cyprinid fish that has undergone human-induced translocations. The natural populations of the species are on the decline due to habitat loss and spawning grounds degradation. The genetic diversity of seven natural populations was investigated to establish the genetic knowledge base for successful conservation efforts and for selective breeding. Twelve microsatellite markers, the sequencing of a 615 bp section of mtDNA (Cytb) and PCR-RFLP analysis of two nuclear markers (Act) and (RpS7) were used to analyze the genetic variation and structure among 175 individuals. All microsatellite loci were found to have moderate levels of polymorphism. The pairwise Fst values between population pairings were moderate; the populations were aligned to four clusters. The Cytb gene showed 20 haplotypes; 67.1% of individuals were categorized as Eastern, while 32.9% to the Western haplogroup. Analysis of the Act and RpS7 genes showed that the level of hybridization among the two haplogroups is high within the sampled populations. Hungarian Tench populations are genetically less diverse compared to natural populations in Western-Europe, but they still represent valuable genetic resources and Lake Fertő, Lake Kolon and Csörnöc-Herpenyő populations can be optimal candidates for future selective breeding programs.

Details

Language :
English
ISSN :
14242818
Volume :
14
Issue :
5
Database :
Directory of Open Access Journals
Journal :
Diversity
Publication Type :
Academic Journal
Accession number :
edsdoj.1902ac833b241f1897768eb561d2186
Document Type :
article
Full Text :
https://doi.org/10.3390/d14050336