Mitochondrial Control Region DNA Variation in Turbot Populations from the Bulgarian and Romanian Black Sea Coasts

Atanassov, Ivan; Ivanova, Petya; Panayotova, Marinela; Tsekov, A.; Rusanov, Krasimir

doi:10.5504/bbeq.2011.0068

Cited by 5 publications

(8 citation statements)

References 16 publications

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“…Suzuki et al (2004) found 28 haplotypes for the phylogeographic analysis of Psetta maxima. Atanassov et al (2011) detected 36 haplotypes with average haplotypes diversity of 0.47 among Psetta maxima populations from Bulgarian and Romanian in the Black Sea. Karan (2015) identified 10 haplotypes with average haplotype diversity of 0.6345 between S. maeoticus populations from the Trabzon, Duzce and Marmara.…”

Section: Discussionmentioning

confidence: 95%

“…The total turbot catches in the Black Sea accounted for 661, 1,444 tons IUU included (GFCM, 2018), the prevailing landings belong to Russia and Turkey for 2016. Despite its economic importance and wide range of distribution, limited literature is available on the population structure of S. maximus using molecular markers (Atanassov et al, 2011;Nikolov et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Genetics Structure Analysis of Turbot (Scophthalmus maximus, Linnaeus, 1758) in the Black and Mediterranean Seas for Application of Innovative Management Strategies

et al. 2019

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Genetics Structure Analysis of Turbot (Scophthalmus maximus, Linnaeus, 1758) in the Black and Mediterranean Seas for Application of Innovative Management Strategies

et al. 2019

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“…A low level of genetic variation at COI and Cyt‐b regions within and across S. maximus sampling sites indicates a low rate of molecular evolution in these regions. A high level of genetic variability at the local scale in the Black Sea based on DNA variation of the mitochondrial control region (Atanassov et al ., 2011) indicated studying more variable regions, such as the control region (Dloop), to investigate the genetic variability across the Black Sea would give more valuable information about true population structuring based on mtDNA analysis. While there are plenty of COI sequences of S. maximus available in the GenBank database for comparison, the number of Cyt‐b sequences is limited.…”

Section: Discussionmentioning

confidence: 99%

Population genetic structure of turbot (Scophthalmus maximus L., 1758) in the Black Sea

Firidin

Öztürk

Alemdag

et al. 2020

Journal of Fish Biology

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Turbot, Scophthalmus maximus, is a commercially important demersal flatfish species distributed throughout the Black Sea. Several studies performed locally with a limited number of specimens using both mitochondrial DNA (mtDNA) and microsatellite markers evidenced notable genetic variation among populations. However, comprehensive population genetic studies are required to help management of the species in the Black Sea. In the present study eight microsatellite loci were used to resolve the population structure of 414 turbot samples collected from 12 sites across the Black Sea. Moreover, two mtDNA genes, COI and Cyt-b, were used for taxonomic identification. Microsatellite markers of Smax-04 and B12-I GT14 were excluded from analysis due to scoring issues. Data analysis was performed with the remaining six loci. Loci were highly polymorphic (average of 17.8 alleles per locus), indicating high genetic variability. Locus 3/20CA17, with high null allele frequency (>30%), significantly deviated from HW equilibrium. Pairwise comparison of the F ST index showed significant differences between most of the surveyed sampling sites (P < 0.01). Cluster analysis evidenced the presence of three genetic groups among sampling sites. Significant genetic differentiation between Northern (Sea of Azov and Crimea) and Southern (Turkish Black Sea Coast) Black Sea sampling sites were detected. The Mantel test supported an isolation by distance model of population structure. These findings are vital for long-term sustainable management of the species and development of conservation programs. Moreover, generated mtDNA sequences would be useful for the establishment of a database for S. maximus.

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“…This has been attributed to the advection of larvae and, in some cases, also to the active migration of adults (Bouza, Sánchez, & Martínez, 1997; Bouza et al., 2002, 2014; Coughlan et al., 1998). Genetic divergence has been documented to be mainly associated with isolated areas in the Western and Eastern Mediterranean Sea (Atanassov et al., 2011). Low but significant differentiation between the Atlantic Ocean and Baltic Sea turbot has also been reported (Florin & Höglund, 2007; Nielsen et al., 2004; Vilas et al., 2010).…”

Section: Introductionmentioning

confidence: 99%

“…adaptive variation, conservation genetics, population structure, RAD sequencing Baltic and Black seas (≈20°C difference). In the latter, turbot was formerly described as a subspecies (Psetta maxima maoetica; Tortonese, 1971), but currently it is considered a geographical variant of S. maximus based on morphological and genetic data (Atanassov, Ivanova, Panayotova, Tsekov, & Rusanov, 2011;Bailly & Chanet, 2010;Blanquer, Alayse, Berrada-Rkhami, & Berrebi, 1992;Bouza et al, 2014;Suzuki et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Parallel evolution and adaptation to environmental factors in a marine flatfish: Implications for fisheries and aquaculture management of the turbot (Scophthalmus maximus)

Prado

Vera

Hermida

et al. 2018

Evolutionary Applications

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Unraveling adaptive genetic variation represents, in addition to the estimate of population demographic parameters, a cornerstone for the management of aquatic natural living resources, which, in turn, represent the raw material for breeding programs. The turbot (Scophthalmus maximus) is a marine flatfish of high commercial value living on the European continental shelf. While wild populations are declining, aquaculture is flourishing in southern Europe. We evaluated the genetic structure of turbot throughout its natural distribution range (672 individuals; 20 populations) by analyzing allele frequency data from 755 single nucleotide polymorphism discovered and genotyped by double‐digest RAD sequencing. The species was structured into four main regions: Baltic Sea, Atlantic Ocean, Adriatic Sea, and Black Sea, with subtle differentiation apparent at the distribution margins of the Atlantic region. Genetic diversity and effective population size estimates were highest in the Atlantic populations, the area of greatest occurrence, while turbot from other regions showed lower levels, reflecting geographical isolation and reduced abundance. Divergent selection was detected within and between the Atlantic Ocean and Baltic Sea regions, and also when comparing these two regions with the Black Sea. Evidence of parallel evolution was detected between the two low salinity regions, the Baltic and Black seas. Correlation between genetic and environmental variation indicated that temperature and salinity were probably the main environmental drivers of selection. Mining around the four genomic regions consistently inferred to be under selection identified candidate genes related to osmoregulation, growth, and resistance to diseases. The new insights are useful for the management of turbot fisheries and aquaculture by providing the baseline for evaluating the consequences of turbot releases from restocking and farming.

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Mitochondrial Control Region DNA Variation in Turbot Populations from the Bulgarian and Romanian Black Sea Coasts

Cited by 5 publications

References 16 publications

Genetics Structure Analysis of Turbot (Scophthalmus maximus, Linnaeus, 1758) in the Black and Mediterranean Seas for Application of Innovative Management Strategies

Genetics Structure Analysis of Turbot (Scophthalmus maximus, Linnaeus, 1758) in the Black and Mediterranean Seas for Application of Innovative Management Strategies

Population genetic structure of turbot (Scophthalmus maximus L., 1758) in the Black Sea

Parallel evolution and adaptation to environmental factors in a marine flatfish: Implications for fisheries and aquaculture management of the turbot (Scophthalmus maximus)

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