Genetic structures and divergent loci in the Natural Populations of Walleye Pollock, Theragra chalcogramma ...

• Main Authors: Hassan, Nadiatul Hafiza, Suda, Ayako, Suyama, Yoshihisa, Matsuki, Yu, Kawata, Masakado
• Format: Conference Object
• Language: unknown
• Published: ASC 2015 - Theme session I 2024
• Subjects: Technologies and data; Pressures, impacts, conservation, and management; Bering Sea; Theragra chalcogramma
• Online Access: https://dx.doi.org/10.17895/ices.pub.25682424; https://ices-library.figshare.com/articles/conference_contribution/Genetic_structures_and_divergent_loci_in_the_Natural_Populations_of_Walleye_Pollock_Theragra_chalcogramma/25682424

No abstracts are to be cited without prior reference to the author.Theragra chalcogramma, a walleye pollock has widespread geographical distributions and exploitsdifferent ecological niches from extremely low temperature to variable temperature oceans. Thepopulations from latitudinal gradient provide natural replication to study on the evolutionaryresponse towards the environmental gradients. A new method which targeting the SNP markers inISSR region across the genome were used to study the population structure and divergent loci inpollock from Bering Sea and Japans’ ocean. A total of 160 SNP loci were obtained from the adoptedmethod and population divergence and structuring were observed in both populations, confirmingthe existence of genetic break between populations (FST: 0.05–0.07). The evidence of outlier SNPsenhanced the dramatic divergence between Bering Sea and Japan oceans’ populations (FST: 0.183-0.625). A correlation study of allele frequencies at each SNP locus with environmental parametersshowed ...