Temporal isolation between two strongly differentiated stocks of the Greenland halibut ( Reinhardtius hippoglossoides Walbaum, 1792) from the Western Barents Sea
Identification of discrete stocks of Greenland halibut is an important aspect of proper fisheries exploitation. Available literature data indicated a lack of significant inter‑area differences between Greenland halibut populations from the Northeast Atlantic. To define the population diversity, two...
Main Authors: | , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Polish Academy of Sciences
2021
|
Subjects: | |
Online Access: | https://doi.org/10.24425/ppr.2021.136603 https://doaj.org/article/ba66416d2b8148c88fc5a9d033a81dcf |
id |
ftdoajarticles:oai:doaj.org/article:ba66416d2b8148c88fc5a9d033a81dcf |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:ba66416d2b8148c88fc5a9d033a81dcf 2023-05-15T15:13:26+02:00 Temporal isolation between two strongly differentiated stocks of the Greenland halibut ( Reinhardtius hippoglossoides Walbaum, 1792) from the Western Barents Sea Barbara Wojtasik Agnieszka Kijewska Monika Mioduchowska Barbara Mikuła Jerzy Sell 2021-06-01T00:00:00Z https://doi.org/10.24425/ppr.2021.136603 https://doaj.org/article/ba66416d2b8148c88fc5a9d033a81dcf EN eng Polish Academy of Sciences https://journals.pan.pl/Content/120030/2021-02-PPR-03-Wojtasik-etal.pdf https://doaj.org/toc/0138-0338 https://doaj.org/toc/2081-8262 0138-0338 2081-8262 https://doi.org/10.24425/ppr.2021.136603 https://doaj.org/article/ba66416d2b8148c88fc5a9d033a81dcf Polish Polar Research, Vol vol. 42, Iss No 2, Pp 117-138 (2021) arctic allozymes discrete stocks genetic diversity heavy metals Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.24425/ppr.2021.136603 2022-12-30T22:46:54Z Identification of discrete stocks of Greenland halibut is an important aspect of proper fisheries exploitation. Available literature data indicated a lack of significant inter‑area differences between Greenland halibut populations from the Northeast Atlantic. To define the population diversity, two aspects were taken into account: enzyme‑genetic diversity and the concentration of heavy metals in tissues. Seven allozyme loci variations were used to characterize the genetic structure of four populations of Greenland halibut from the Western Barents Sea region. The samples were collected from the spawning area in the period when this species took migration to spawn. The sample RH4 was significantly different from the other samples collected from the same location (RH2 and RH3) and depth for over two days. Another sample (RH8), collected from the nearby area 6 days later was similar to the samples RH2, RH3. We noticed a significant divergence between the sample RH4 and the three remaining samples, where the value of the index FST fluctuated about 0.40 and approximately 0.01 between three similar populations. This genetic fluctuation negates the thesis of a panmictic character of the Western Atlantic population. Feeding groups of Greenland halibut are moving along the Barents Sea shelf and they are exposed to different heavy metals concentrations according to the food preferences or the exact place of feeding. We identified similar concentrations of heavy metals, i.e., Zn, Cu, Cd, and Pb in all samples. Trace metal analysis of aquatic organisms from the Barents Sea can provide important information on the degree of environmental contamination, and the potential impact of seafood consumption. Article in Journal/Newspaper Arctic Barents Sea Greenland Northeast Atlantic Polar Research Directory of Open Access Journals: DOAJ Articles Arctic Barents Sea Greenland |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic allozymes discrete stocks genetic diversity heavy metals Geology QE1-996.5 |
spellingShingle |
arctic allozymes discrete stocks genetic diversity heavy metals Geology QE1-996.5 Barbara Wojtasik Agnieszka Kijewska Monika Mioduchowska Barbara Mikuła Jerzy Sell Temporal isolation between two strongly differentiated stocks of the Greenland halibut ( Reinhardtius hippoglossoides Walbaum, 1792) from the Western Barents Sea |
topic_facet |
arctic allozymes discrete stocks genetic diversity heavy metals Geology QE1-996.5 |
description |
Identification of discrete stocks of Greenland halibut is an important aspect of proper fisheries exploitation. Available literature data indicated a lack of significant inter‑area differences between Greenland halibut populations from the Northeast Atlantic. To define the population diversity, two aspects were taken into account: enzyme‑genetic diversity and the concentration of heavy metals in tissues. Seven allozyme loci variations were used to characterize the genetic structure of four populations of Greenland halibut from the Western Barents Sea region. The samples were collected from the spawning area in the period when this species took migration to spawn. The sample RH4 was significantly different from the other samples collected from the same location (RH2 and RH3) and depth for over two days. Another sample (RH8), collected from the nearby area 6 days later was similar to the samples RH2, RH3. We noticed a significant divergence between the sample RH4 and the three remaining samples, where the value of the index FST fluctuated about 0.40 and approximately 0.01 between three similar populations. This genetic fluctuation negates the thesis of a panmictic character of the Western Atlantic population. Feeding groups of Greenland halibut are moving along the Barents Sea shelf and they are exposed to different heavy metals concentrations according to the food preferences or the exact place of feeding. We identified similar concentrations of heavy metals, i.e., Zn, Cu, Cd, and Pb in all samples. Trace metal analysis of aquatic organisms from the Barents Sea can provide important information on the degree of environmental contamination, and the potential impact of seafood consumption. |
format |
Article in Journal/Newspaper |
author |
Barbara Wojtasik Agnieszka Kijewska Monika Mioduchowska Barbara Mikuła Jerzy Sell |
author_facet |
Barbara Wojtasik Agnieszka Kijewska Monika Mioduchowska Barbara Mikuła Jerzy Sell |
author_sort |
Barbara Wojtasik |
title |
Temporal isolation between two strongly differentiated stocks of the Greenland halibut ( Reinhardtius hippoglossoides Walbaum, 1792) from the Western Barents Sea |
title_short |
Temporal isolation between two strongly differentiated stocks of the Greenland halibut ( Reinhardtius hippoglossoides Walbaum, 1792) from the Western Barents Sea |
title_full |
Temporal isolation between two strongly differentiated stocks of the Greenland halibut ( Reinhardtius hippoglossoides Walbaum, 1792) from the Western Barents Sea |
title_fullStr |
Temporal isolation between two strongly differentiated stocks of the Greenland halibut ( Reinhardtius hippoglossoides Walbaum, 1792) from the Western Barents Sea |
title_full_unstemmed |
Temporal isolation between two strongly differentiated stocks of the Greenland halibut ( Reinhardtius hippoglossoides Walbaum, 1792) from the Western Barents Sea |
title_sort |
temporal isolation between two strongly differentiated stocks of the greenland halibut ( reinhardtius hippoglossoides walbaum, 1792) from the western barents sea |
publisher |
Polish Academy of Sciences |
publishDate |
2021 |
url |
https://doi.org/10.24425/ppr.2021.136603 https://doaj.org/article/ba66416d2b8148c88fc5a9d033a81dcf |
geographic |
Arctic Barents Sea Greenland |
geographic_facet |
Arctic Barents Sea Greenland |
genre |
Arctic Barents Sea Greenland Northeast Atlantic Polar Research |
genre_facet |
Arctic Barents Sea Greenland Northeast Atlantic Polar Research |
op_source |
Polish Polar Research, Vol vol. 42, Iss No 2, Pp 117-138 (2021) |
op_relation |
https://journals.pan.pl/Content/120030/2021-02-PPR-03-Wojtasik-etal.pdf https://doaj.org/toc/0138-0338 https://doaj.org/toc/2081-8262 0138-0338 2081-8262 https://doi.org/10.24425/ppr.2021.136603 https://doaj.org/article/ba66416d2b8148c88fc5a9d033a81dcf |
op_doi |
https://doi.org/10.24425/ppr.2021.136603 |
_version_ |
1766343989353512960 |