6533b7dafe1ef96bd126e14b
RESEARCH PRODUCT
RAD SNP markers as a tool for conservation of dolphinfish Coryphaena hippurus in the Mediterranean Sea: Identification of subtle genetic structure and assessment of populations sex-ratios
Luca BargelloniRafaella FranchMarco ArculeoGiulia Dalla RovereFrancesco Marososubject
Genetic MarkersMale2bRAD0301 basic medicineConservation of Natural ResourcesSex Determination AnalysisRestriction MappingPopulationSettore BIO/05 - ZoologiaIntrogressionAquatic ScienceGenetic differentiationPolymorphism Single NucleotideMediterranean Basin03 medical and health sciencesMediterranean seaMediterranean SeaGeneticsAnimalsOutliersSex RatioGenetic variabilityeducation2bRAD; Genetic differentiation; Outliers; Sex determination markers; Aquatic Science; Geneticseducation.field_of_studyCoryphaenabiologyEcologybiology.organism_classificationPerciformes030104 developmental biologyEvolutionary biologyGenetic markerGenetic structureFemaleAnimal Distribution2bRAD Genetic differentiation Outliers Sex determination markersSex determination markersdescription
Dolphinfish is an important fish species for both commercial and sport fishing, but so far limited information is available on genetic variability and pattern of differentiation of dolphinfish populations in the Mediterranean basin. Recently developed techniques allow genome-wide identification of genetic markers for better understanding of population structure in species with limited genome information. Using restriction-site associated DNA analysis we successfully genotyped 140 individuals of dolphinfish from eight locations in the Mediterranean Sea at 3324 SNP loci. We identified 311 sex-related loci that were used to assess sex-ratio in dolphinfish populations. In addition, we identified a weak signature of genetic differentiation of the population closer to Gibraltar Strait in comparison to other Mediterranean populations, which might be related to introgression of individuals from Atlantic. No further genetic differentiation could be detected in the other populations sampled, as expected considering the known highly mobility of the species. The results obtained improve our knowledge of the species and can help managing dolphinfish stock in the future.
year | journal | country | edition | language |
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2016-01-01 | Marine Genomics |