Effects of trophic position and lipid on organochlorine concentrations in fishes from subarctic lakes in Yukon Territory
Concentrations of organochlorines in lake trout (Salvelinus namaycush), burbot (Lota lota), and northern pike (Esox lucius) from subarctic lakes in Yukon Territory varied significantly among populations, and these differences could not be ascribed to size or age of the fishes. For each species, lipi...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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1998
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crcansciencepubl:10.1139/f97-307 2023-12-17T10:28:24+01:00 Effects of trophic position and lipid on organochlorine concentrations in fishes from subarctic lakes in Yukon Territory Kidd, Karen A Schindler, David W Hesslein, Raymond H Muir, Derek CG 1998 http://dx.doi.org/10.1139/f97-307 http://www.nrcresearchpress.com/doi/pdf/10.1139/f97-307 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 55, issue 4, page 869-881 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1998 crcansciencepubl https://doi.org/10.1139/f97-307 2023-11-19T13:38:42Z Concentrations of organochlorines in lake trout (Salvelinus namaycush), burbot (Lota lota), and northern pike (Esox lucius) from subarctic lakes in Yukon Territory varied significantly among populations, and these differences could not be ascribed to size or age of the fishes. For each species, lipid content and trophic positioning (measured by stable nitrogen isotope ratios; delta 15 N) were significantly different across populations, and the latter differences could not be attributed to variable delta 15 N at the base of the food webs. Across lakes, concentrations of up Sigma PCB, Sigma DDT, chlorinated bornanes (CHB), chlordane ( Sigma CHL), chlorobenzenes ( up Sigma CBZ), and hexachlorocyclohexane ( Sigma HCH) in lake trout and northern pike muscle and burbot liver were significantly related to their delta 15 N. The slopes of these log organochlorine - delta 15 N relations were greatest for more lipophilic contaminants ( Sigma PCB, Sigma DDT, CHB), indicating that they bioaccumulate to a greater degree than less lipophilic contaminants. Lipid significantly predicted organochlorine concentrations both within and among populations of lake trout, and the slopes did not vary significantly with contaminant lipophilicity. Among-lake differences in Sigma HCH in trout muscle were removed by adjusting concentrations by the covariate lipid. Lipid-adjusted concentrations of CHB, Sigma PCB, Sigma DDT, Sigma CHL, and Sigma CBZ in lake trout remained significantly different between lakes, and these differences were attributed to variable food chain lengths. Article in Journal/Newspaper Burbot Lota lota Subarctic lota Yukon Canadian Science Publishing (via Crossref) Yukon Canadian Journal of Fisheries and Aquatic Sciences 55 4 869 881 |
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Open Polar |
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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 Kidd, Karen A Schindler, David W Hesslein, Raymond H Muir, Derek CG Effects of trophic position and lipid on organochlorine concentrations in fishes from subarctic lakes in Yukon Territory |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Concentrations of organochlorines in lake trout (Salvelinus namaycush), burbot (Lota lota), and northern pike (Esox lucius) from subarctic lakes in Yukon Territory varied significantly among populations, and these differences could not be ascribed to size or age of the fishes. For each species, lipid content and trophic positioning (measured by stable nitrogen isotope ratios; delta 15 N) were significantly different across populations, and the latter differences could not be attributed to variable delta 15 N at the base of the food webs. Across lakes, concentrations of up Sigma PCB, Sigma DDT, chlorinated bornanes (CHB), chlordane ( Sigma CHL), chlorobenzenes ( up Sigma CBZ), and hexachlorocyclohexane ( Sigma HCH) in lake trout and northern pike muscle and burbot liver were significantly related to their delta 15 N. The slopes of these log organochlorine - delta 15 N relations were greatest for more lipophilic contaminants ( Sigma PCB, Sigma DDT, CHB), indicating that they bioaccumulate to a greater degree than less lipophilic contaminants. Lipid significantly predicted organochlorine concentrations both within and among populations of lake trout, and the slopes did not vary significantly with contaminant lipophilicity. Among-lake differences in Sigma HCH in trout muscle were removed by adjusting concentrations by the covariate lipid. Lipid-adjusted concentrations of CHB, Sigma PCB, Sigma DDT, Sigma CHL, and Sigma CBZ in lake trout remained significantly different between lakes, and these differences were attributed to variable food chain lengths. |
format |
Article in Journal/Newspaper |
author |
Kidd, Karen A Schindler, David W Hesslein, Raymond H Muir, Derek CG |
author_facet |
Kidd, Karen A Schindler, David W Hesslein, Raymond H Muir, Derek CG |
author_sort |
Kidd, Karen A |
title |
Effects of trophic position and lipid on organochlorine concentrations in fishes from subarctic lakes in Yukon Territory |
title_short |
Effects of trophic position and lipid on organochlorine concentrations in fishes from subarctic lakes in Yukon Territory |
title_full |
Effects of trophic position and lipid on organochlorine concentrations in fishes from subarctic lakes in Yukon Territory |
title_fullStr |
Effects of trophic position and lipid on organochlorine concentrations in fishes from subarctic lakes in Yukon Territory |
title_full_unstemmed |
Effects of trophic position and lipid on organochlorine concentrations in fishes from subarctic lakes in Yukon Territory |
title_sort |
effects of trophic position and lipid on organochlorine concentrations in fishes from subarctic lakes in yukon territory |
publisher |
Canadian Science Publishing |
publishDate |
1998 |
url |
http://dx.doi.org/10.1139/f97-307 http://www.nrcresearchpress.com/doi/pdf/10.1139/f97-307 |
geographic |
Yukon |
geographic_facet |
Yukon |
genre |
Burbot Lota lota Subarctic lota Yukon |
genre_facet |
Burbot Lota lota Subarctic lota Yukon |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 55, issue 4, page 869-881 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f97-307 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
55 |
container_issue |
4 |
container_start_page |
869 |
op_container_end_page |
881 |
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1785580502941433856 |