Mitochondrial genome variation of Atlantic cod ...

• Main Authors: Jørgensen, Tor, Karlsen, BĂĽrd, Emblem, Ă se, Breines, Ragna, Andreassen, Morten, Rounge, Trine, Nederbragt, Alexander, Jakobsen, Kjetill, Nymark, Marianne, Ursvik, Anita, Coucheron, Dag, Jakt, Lars, Nordeide, Jarle, Moum, Truls, Johansen, Steinar
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: figshare 2018
• Subjects: Genetics; FOS: Biological sciences; Evolutionary Biology; Environmental Sciences not elsewhere classified; Ecology; Biological Sciences not elsewhere classified; Inorganic Chemistry; FOS: Chemical sciences; Virology; Computational Biology; North Atlantic
• Online Access: https://dx.doi.org/10.6084/m9.figshare.c.4138877; https://springernature.figshare.com/collections/Mitochondrial_genome_variation_of_Atlantic_cod/4138877

Abstract Objective The objective of this study was to analyse intraspecific sequence variation of Atlantic cod mitochondrial DNA, based on a comprehensive collection of completely sequenced mitochondrial genomes. Results We determined the complete mitochondrial DNA sequence of 124 cod specimens from the eastern and western part of the speciesâ distribution range in the North Atlantic Ocean. All specimens harboured a unique mitochondrial DNA haplotype. Nine hundred and fifty-two polymorphic sites were identified, including 109 non-synonymous sites within protein coding regions. Eighteen variable sites were identified as indels, exclusively distributed in structural RNA genes and non-coding regions. Phylogeographic analyses based on 156 available cod mitochondrial genomes did not reveal a clear structure. There was a lack of mitochondrial genetic differentiation between two ecotypes of cod in the eastern North Atlantic, but eastern and western cod were differentiated and mitochondrial genome diversity was ...