Spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the Alaskan and Canadian Arctic
Planktonic copepods (Calanus glacialis and C. hyperboreus; n = 37) and water (n = 19) were collected to examine the spatial distribution and bioaccumulation of organochlorine contaminants (OCs) in the Alaskan and Canadian Arctic. The rank order of total OC (∑ OC) group concentrations in Calanus samp...
Published in: | Environmental Toxicology and Chemistry |
---|---|
Main Authors: | , , , , , |
Format: | Text |
Language: | unknown |
Published: |
Scholarship at UWindsor
2002
|
Subjects: | |
Online Access: | https://scholar.uwindsor.ca/glierpub/448 https://doi.org/10.1002/etc.5620210316 |
id |
ftunivwindsor:oai:scholar.uwindsor.ca:glierpub-1450 |
---|---|
record_format |
openpolar |
spelling |
ftunivwindsor:oai:scholar.uwindsor.ca:glierpub-1450 2023-06-11T04:08:55+02:00 Spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the Alaskan and Canadian Arctic Hoekstra, Paul F. O'Hara, Todd M. Teixeira, Camilla Backus, Sean Fisk, Aaron T. Muir, Derek C.G. 2002-01-01T08:00:00Z https://scholar.uwindsor.ca/glierpub/448 https://doi.org/10.1002/etc.5620210316 unknown Scholarship at UWindsor https://scholar.uwindsor.ca/glierpub/448 doi:10.1002/etc.5620210316 https://doi.org/10.1002/etc.5620210316 Great Lakes Institute for Environmental Research Publications Biotransformation Invertebrate Partitioning Sea water Toxaphene text 2002 ftunivwindsor https://doi.org/10.1002/etc.5620210316 2023-05-06T19:10:57Z Planktonic copepods (Calanus glacialis and C. hyperboreus; n = 37) and water (n = 19) were collected to examine the spatial distribution and bioaccumulation of organochlorine contaminants (OCs) in the Alaskan and Canadian Arctic. The rank order of total OC (∑ OC) group concentrations in Calanus samples was toxaphene ≥ ∑ polychlorinated biphenyls (PCBs) > ∑ hexachlorcyclohexane (HCH) > ∑ DDT > ∑ chlordane-related compounds (CHLOR) > ∑ chlorobenzenes (ClBz). The dominant analyte was α-HCH in all water and zooplankton samples. The most abundant toxaphene congener in water and zooplankton samples was the hexachlorobornane B6-923. Organochlorine contaminant group concentrations in Alaskan zooplankton and water samples were lower than those in samples collected from sites in the eastern Canadian Arctic. Comparison of PCB and toxaphene congener profiles in zooplankton and water samples suggests that biotransformation by cytochrome P-4502B isozymes is low in Calanus, and limited phase I metabolism may occur. The log relationship of bioaccumulation factor (log BAF) versus octanol-water partition coefficient (log KOW) relationship was near 1:1 for OCs within the log KOW range of 3 to 6. A curvilinear model provided a better relationship between these two variables when OC compounds with log KOW > 6 were included. These results suggest that hydrophobic OCs (log KOW 3-6) in Calanus species are at equilibrium with the water concentrations and that physical partitioning, rather than biotransformation, is the major factor governing OC profiles in marine zooplankton. Text Arctic Calanus glacialis Zooplankton Copepods University of Windsor, Ontario: Scholarship at UWindsor Arctic Environmental Toxicology and Chemistry 21 3 575 583 |
institution |
Open Polar |
collection |
University of Windsor, Ontario: Scholarship at UWindsor |
op_collection_id |
ftunivwindsor |
language |
unknown |
topic |
Biotransformation Invertebrate Partitioning Sea water Toxaphene |
spellingShingle |
Biotransformation Invertebrate Partitioning Sea water Toxaphene Hoekstra, Paul F. O'Hara, Todd M. Teixeira, Camilla Backus, Sean Fisk, Aaron T. Muir, Derek C.G. Spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the Alaskan and Canadian Arctic |
topic_facet |
Biotransformation Invertebrate Partitioning Sea water Toxaphene |
description |
Planktonic copepods (Calanus glacialis and C. hyperboreus; n = 37) and water (n = 19) were collected to examine the spatial distribution and bioaccumulation of organochlorine contaminants (OCs) in the Alaskan and Canadian Arctic. The rank order of total OC (∑ OC) group concentrations in Calanus samples was toxaphene ≥ ∑ polychlorinated biphenyls (PCBs) > ∑ hexachlorcyclohexane (HCH) > ∑ DDT > ∑ chlordane-related compounds (CHLOR) > ∑ chlorobenzenes (ClBz). The dominant analyte was α-HCH in all water and zooplankton samples. The most abundant toxaphene congener in water and zooplankton samples was the hexachlorobornane B6-923. Organochlorine contaminant group concentrations in Alaskan zooplankton and water samples were lower than those in samples collected from sites in the eastern Canadian Arctic. Comparison of PCB and toxaphene congener profiles in zooplankton and water samples suggests that biotransformation by cytochrome P-4502B isozymes is low in Calanus, and limited phase I metabolism may occur. The log relationship of bioaccumulation factor (log BAF) versus octanol-water partition coefficient (log KOW) relationship was near 1:1 for OCs within the log KOW range of 3 to 6. A curvilinear model provided a better relationship between these two variables when OC compounds with log KOW > 6 were included. These results suggest that hydrophobic OCs (log KOW 3-6) in Calanus species are at equilibrium with the water concentrations and that physical partitioning, rather than biotransformation, is the major factor governing OC profiles in marine zooplankton. |
format |
Text |
author |
Hoekstra, Paul F. O'Hara, Todd M. Teixeira, Camilla Backus, Sean Fisk, Aaron T. Muir, Derek C.G. |
author_facet |
Hoekstra, Paul F. O'Hara, Todd M. Teixeira, Camilla Backus, Sean Fisk, Aaron T. Muir, Derek C.G. |
author_sort |
Hoekstra, Paul F. |
title |
Spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the Alaskan and Canadian Arctic |
title_short |
Spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the Alaskan and Canadian Arctic |
title_full |
Spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the Alaskan and Canadian Arctic |
title_fullStr |
Spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the Alaskan and Canadian Arctic |
title_full_unstemmed |
Spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the Alaskan and Canadian Arctic |
title_sort |
spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the alaskan and canadian arctic |
publisher |
Scholarship at UWindsor |
publishDate |
2002 |
url |
https://scholar.uwindsor.ca/glierpub/448 https://doi.org/10.1002/etc.5620210316 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Calanus glacialis Zooplankton Copepods |
genre_facet |
Arctic Calanus glacialis Zooplankton Copepods |
op_source |
Great Lakes Institute for Environmental Research Publications |
op_relation |
https://scholar.uwindsor.ca/glierpub/448 doi:10.1002/etc.5620210316 https://doi.org/10.1002/etc.5620210316 |
op_doi |
https://doi.org/10.1002/etc.5620210316 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
21 |
container_issue |
3 |
container_start_page |
575 |
op_container_end_page |
583 |
_version_ |
1768382575673344000 |