Accumulation of Persistent Pollutants in Normal and Dwarfed Arctic Char ( Salvelinus alpinus sp. complex)
Two extreme growth fractions of introgressed sympatric populations of the Arctic char (Salvelinus alpinus) species complex from Lake Blåsjön, northern Sweden, were sampled for individual concentrations of persistent pollutants originating from atmospheric deposition. Slow growing char (dwarfs) had s...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
1993
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Online Access: | http://dx.doi.org/10.1139/f93-281 http://www.nrcresearchpress.com/doi/pdf/10.1139/f93-281 |
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crcansciencepubl:10.1139/f93-281 2023-12-17T10:25:27+01:00 Accumulation of Persistent Pollutants in Normal and Dwarfed Arctic Char ( Salvelinus alpinus sp. complex) Hammar, Johan Larsson, Per Klavins, Maris 1993 http://dx.doi.org/10.1139/f93-281 http://www.nrcresearchpress.com/doi/pdf/10.1139/f93-281 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 50, issue 12, page 2574-2580 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1993 crcansciencepubl https://doi.org/10.1139/f93-281 2023-11-19T13:39:23Z Two extreme growth fractions of introgressed sympatric populations of the Arctic char (Salvelinus alpinus) species complex from Lake Blåsjön, northern Sweden, were sampled for individual concentrations of persistent pollutants originating from atmospheric deposition. Slow growing char (dwarfs) had significantly higher levels of SPCB (sum of PCB congeners found) and p,p-DDE (dominating DDT-compound) than fast growing char (normals). Besides demonstrating a highly divergent growth pattern the introgressed populations also inhabit a great range of depths, and the seasonal food consumption rates may differ between extreme growth fractions, although the same major invertebrates (introduced Mysis relicta and Pallasea quadrispinosa) are consumed over the year. However, of the life history parameters differing in late spring, individual growth rate was the most important factor explaining the variation in the levels of the pollutants studied. The results support the hypothesis of a biomass "dilution" of pollutants in fish, illustrated by lower levels in fast growing char and higher levels in the slow-growing dwarfs. Individuals with alternative growth strategies in sympatric conspecific communities thus provide unique opportunities to study growth rate as a variable influencing levels of persistent pollutants in fish. Article in Journal/Newspaper Arctic Northern Sweden Salvelinus alpinus Canadian Science Publishing (via Crossref) Arctic Canadian Journal of Fisheries and Aquatic Sciences 50 12 2574 2580 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Hammar, Johan Larsson, Per Klavins, Maris Accumulation of Persistent Pollutants in Normal and Dwarfed Arctic Char ( Salvelinus alpinus sp. complex) |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Two extreme growth fractions of introgressed sympatric populations of the Arctic char (Salvelinus alpinus) species complex from Lake Blåsjön, northern Sweden, were sampled for individual concentrations of persistent pollutants originating from atmospheric deposition. Slow growing char (dwarfs) had significantly higher levels of SPCB (sum of PCB congeners found) and p,p-DDE (dominating DDT-compound) than fast growing char (normals). Besides demonstrating a highly divergent growth pattern the introgressed populations also inhabit a great range of depths, and the seasonal food consumption rates may differ between extreme growth fractions, although the same major invertebrates (introduced Mysis relicta and Pallasea quadrispinosa) are consumed over the year. However, of the life history parameters differing in late spring, individual growth rate was the most important factor explaining the variation in the levels of the pollutants studied. The results support the hypothesis of a biomass "dilution" of pollutants in fish, illustrated by lower levels in fast growing char and higher levels in the slow-growing dwarfs. Individuals with alternative growth strategies in sympatric conspecific communities thus provide unique opportunities to study growth rate as a variable influencing levels of persistent pollutants in fish. |
format |
Article in Journal/Newspaper |
author |
Hammar, Johan Larsson, Per Klavins, Maris |
author_facet |
Hammar, Johan Larsson, Per Klavins, Maris |
author_sort |
Hammar, Johan |
title |
Accumulation of Persistent Pollutants in Normal and Dwarfed Arctic Char ( Salvelinus alpinus sp. complex) |
title_short |
Accumulation of Persistent Pollutants in Normal and Dwarfed Arctic Char ( Salvelinus alpinus sp. complex) |
title_full |
Accumulation of Persistent Pollutants in Normal and Dwarfed Arctic Char ( Salvelinus alpinus sp. complex) |
title_fullStr |
Accumulation of Persistent Pollutants in Normal and Dwarfed Arctic Char ( Salvelinus alpinus sp. complex) |
title_full_unstemmed |
Accumulation of Persistent Pollutants in Normal and Dwarfed Arctic Char ( Salvelinus alpinus sp. complex) |
title_sort |
accumulation of persistent pollutants in normal and dwarfed arctic char ( salvelinus alpinus sp. complex) |
publisher |
Canadian Science Publishing |
publishDate |
1993 |
url |
http://dx.doi.org/10.1139/f93-281 http://www.nrcresearchpress.com/doi/pdf/10.1139/f93-281 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Northern Sweden Salvelinus alpinus |
genre_facet |
Arctic Northern Sweden Salvelinus alpinus |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 50, issue 12, page 2574-2580 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f93-281 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
50 |
container_issue |
12 |
container_start_page |
2574 |
op_container_end_page |
2580 |
_version_ |
1785576877591625728 |