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High gene flow in polar cod ( Boreogadus saida ) from West‐Svalbard and the Eurasian Basin by Sarah M. Maes; Henrik Christiansen; Felix C. Mark; Magnus Lucassen; Anton Van de Putte; Filip A.M. Volckaert; Hauke Flores is a Environmental Science article available to read on EtoBox.

What is High gene flow in polar cod ( Boreogadus saida ) from West‐Svalbard and the Eurasian Basin about?

## Abstract The current and projected environmental change of the Arctic Ocean contrasts sharply with the limited knowledge of its genetic biodiversity. Polar cod Boreogadus saida (Lepechin, 1774) is an abundant circumpolar marine fish and ecological key species. The central role of polar cod in the Arctic marine food web warrants a better understanding of its population structure and connectivity. In this study, the genetic population structure of 171 juveniles, collected from several fjords off West‐Svalbard (Billefjorden, Hornsund and Kongsfjorden), the northern Sophia Basin and the Eurasian Basin of the Arctic Ocean, was analysed using nine DNA microsatellite loci. Genetic analyses indicated moderate to high genetic diversity, but absence of spatial population structure and isolation‐by‐distance, suggesting ongoing gene flow between the studied sampling regions. High levels of connectivity may be key for polar cod to maintain populations across wide spatial scales. The adaptive capacity of the species will be increasingly important to face challenges such as habitat fragmentation, ocean warming and changes in prey composition. In view of a limited understanding of the populatio

Who reads High gene flow in polar cod ( Boreogadus saida ) from West‐Svalbard and the Eurasian Basin?

Author

Sarah M. Maes; Henrik Christiansen; Felix C. Mark; Magnus Lucassen; Anton Van de Putte; Filip A.M. Volckaert; Hauke Flores

Publisher

Wiley

Published

2021

Language

EN

Field

Environmental Science (Physical Sciences)