Distinct genetic clustering in the weakly differentiated polar cod, Boreogadus saida Lepechin, 1774 from East Siberian Sea to Svalbard
The cold-adapted polar cod Boreogadus saida, a key species in Arctic ecosystems, is vulnerable to global warming and ice retreat. In this study, 1257 individuals sampled in 17 locations within the latitudinal range of 75–81°N from Svalbard to East Siberian Sea were genotyped with a dedicated suite o...
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ftimr:oai:imr.brage.unit.no:11250/2767798 2023-05-15T15:08:24+02:00 Distinct genetic clustering in the weakly differentiated polar cod, Boreogadus saida Lepechin, 1774 from East Siberian Sea to Svalbard Sanchez, Maria Quintela Bhat, Shripathi Præbel, Kim Gordeeva, Natalia Seljestad, Gaute Wilhelmsen Hanebrekke, Tanja Lexau Mateos-Rivera, Alejandro Vikebø, Frode Bendiksen Zelenia, Daria Cheng, Chi-Hing Christina Johansen, Torild 2021 application/pdf https://hdl.handle.net/11250/2767798 https://doi.org/10.1007/s00300-021-02911-7 eng eng Equinor: 4590100459 Norges forskningsråd: 314449 Polar Biology. 2021, 44 1711-1724. urn:issn:0722-4060 https://hdl.handle.net/11250/2767798 https://doi.org/10.1007/s00300-021-02911-7 cristin:1923155 1711-1724 44 Polar Biology Peer reviewed Journal article 2021 ftimr https://doi.org/10.1007/s00300-021-02911-7 2021-09-23T20:15:53Z The cold-adapted polar cod Boreogadus saida, a key species in Arctic ecosystems, is vulnerable to global warming and ice retreat. In this study, 1257 individuals sampled in 17 locations within the latitudinal range of 75–81°N from Svalbard to East Siberian Sea were genotyped with a dedicated suite of 116 single-nucleotide polymorphic loci (SNP). The overall pattern of isolation by distance (IBD) found was driven by the two easternmost samples (East Siberian Sea and Laptev Sea), whereas no differentiation was registered in the area between the Kara Sea and Svalbard. Eleven SNP under strong linkage disequilibrium, nine of which could be annotated to chromosome 2 in Atlantic cod, defined two genetic groups of distinct size, with the major cluster containing seven-fold larger number of individuals than the minor. No underlying geographic basis was evident, as both clusters were detected throughout all sampling sites in relatively similar proportions (i.e. individuals in the minor cluster ranging between 4 and 19% on the location basis). Similarly, females and males were also evenly distributed between clusters and age groups. A differentiation was, however, found regarding size at age: individuals belonging to the major cluster were significantly longer in the second year. This study contributes to increasing the population genetic knowledge of this species and suggests that an appropriate management should be ensured to safeguard its diversity. publishedVersion Article in Journal/Newspaper Arctic atlantic cod Boreogadus saida East Siberian Sea Global warming Kara Sea laptev Laptev Sea Polar Biology polar cod Svalbard Institute for Marine Research: Brage IMR Arctic East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) Kara Sea Laptev Sea Svalbard Polar Biology 44 8 1711 1724 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
The cold-adapted polar cod Boreogadus saida, a key species in Arctic ecosystems, is vulnerable to global warming and ice retreat. In this study, 1257 individuals sampled in 17 locations within the latitudinal range of 75–81°N from Svalbard to East Siberian Sea were genotyped with a dedicated suite of 116 single-nucleotide polymorphic loci (SNP). The overall pattern of isolation by distance (IBD) found was driven by the two easternmost samples (East Siberian Sea and Laptev Sea), whereas no differentiation was registered in the area between the Kara Sea and Svalbard. Eleven SNP under strong linkage disequilibrium, nine of which could be annotated to chromosome 2 in Atlantic cod, defined two genetic groups of distinct size, with the major cluster containing seven-fold larger number of individuals than the minor. No underlying geographic basis was evident, as both clusters were detected throughout all sampling sites in relatively similar proportions (i.e. individuals in the minor cluster ranging between 4 and 19% on the location basis). Similarly, females and males were also evenly distributed between clusters and age groups. A differentiation was, however, found regarding size at age: individuals belonging to the major cluster were significantly longer in the second year. This study contributes to increasing the population genetic knowledge of this species and suggests that an appropriate management should be ensured to safeguard its diversity. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Sanchez, Maria Quintela Bhat, Shripathi Præbel, Kim Gordeeva, Natalia Seljestad, Gaute Wilhelmsen Hanebrekke, Tanja Lexau Mateos-Rivera, Alejandro Vikebø, Frode Bendiksen Zelenia, Daria Cheng, Chi-Hing Christina Johansen, Torild |
spellingShingle |
Sanchez, Maria Quintela Bhat, Shripathi Præbel, Kim Gordeeva, Natalia Seljestad, Gaute Wilhelmsen Hanebrekke, Tanja Lexau Mateos-Rivera, Alejandro Vikebø, Frode Bendiksen Zelenia, Daria Cheng, Chi-Hing Christina Johansen, Torild Distinct genetic clustering in the weakly differentiated polar cod, Boreogadus saida Lepechin, 1774 from East Siberian Sea to Svalbard |
author_facet |
Sanchez, Maria Quintela Bhat, Shripathi Præbel, Kim Gordeeva, Natalia Seljestad, Gaute Wilhelmsen Hanebrekke, Tanja Lexau Mateos-Rivera, Alejandro Vikebø, Frode Bendiksen Zelenia, Daria Cheng, Chi-Hing Christina Johansen, Torild |
author_sort |
Sanchez, Maria Quintela |
title |
Distinct genetic clustering in the weakly differentiated polar cod, Boreogadus saida Lepechin, 1774 from East Siberian Sea to Svalbard |
title_short |
Distinct genetic clustering in the weakly differentiated polar cod, Boreogadus saida Lepechin, 1774 from East Siberian Sea to Svalbard |
title_full |
Distinct genetic clustering in the weakly differentiated polar cod, Boreogadus saida Lepechin, 1774 from East Siberian Sea to Svalbard |
title_fullStr |
Distinct genetic clustering in the weakly differentiated polar cod, Boreogadus saida Lepechin, 1774 from East Siberian Sea to Svalbard |
title_full_unstemmed |
Distinct genetic clustering in the weakly differentiated polar cod, Boreogadus saida Lepechin, 1774 from East Siberian Sea to Svalbard |
title_sort |
distinct genetic clustering in the weakly differentiated polar cod, boreogadus saida lepechin, 1774 from east siberian sea to svalbard |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2767798 https://doi.org/10.1007/s00300-021-02911-7 |
long_lat |
ENVELOPE(166.000,166.000,74.000,74.000) |
geographic |
Arctic East Siberian Sea Kara Sea Laptev Sea Svalbard |
geographic_facet |
Arctic East Siberian Sea Kara Sea Laptev Sea Svalbard |
genre |
Arctic atlantic cod Boreogadus saida East Siberian Sea Global warming Kara Sea laptev Laptev Sea Polar Biology polar cod Svalbard |
genre_facet |
Arctic atlantic cod Boreogadus saida East Siberian Sea Global warming Kara Sea laptev Laptev Sea Polar Biology polar cod Svalbard |
op_source |
1711-1724 44 Polar Biology |
op_relation |
Equinor: 4590100459 Norges forskningsråd: 314449 Polar Biology. 2021, 44 1711-1724. urn:issn:0722-4060 https://hdl.handle.net/11250/2767798 https://doi.org/10.1007/s00300-021-02911-7 cristin:1923155 |
op_doi |
https://doi.org/10.1007/s00300-021-02911-7 |
container_title |
Polar Biology |
container_volume |
44 |
container_issue |
8 |
container_start_page |
1711 |
op_container_end_page |
1724 |
_version_ |
1766339771946237952 |