Current‐use pesticides in seawater and their bioaccumulation in polar bear–ringed seal food chains of the Canadian Arctic
Abstract The distribution of current‐use pesticides (CUPs) in seawater and their trophodynamics were investigated in 3 Canadian Arctic marine food chains. The greatest ranges of dissolved‐phase concentrations in seawater for each CUP were endosulfan sulfate (less than method detection limit (MDL) to...
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crwiley:10.1002/etc.3427 2024-06-02T08:01:51+00:00 Current‐use pesticides in seawater and their bioaccumulation in polar bear–ringed seal food chains of the Canadian Arctic Morris, Adam D. Muir, Derek C.G. Solomon, Keith R. Letcher, Robert J. McKinney, Melissa A. Fisk, Aaron T. McMeans, Bailey C. Tomy, Gregg T. Teixeira, Camilla Wang, Xiaowa Duric, Mark 2016 http://dx.doi.org/10.1002/etc.3427 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.3427 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.3427 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Toxicology and Chemistry volume 35, issue 7, page 1695-1707 ISSN 0730-7268 1552-8618 journal-article 2016 crwiley https://doi.org/10.1002/etc.3427 2024-05-03T11:02:38Z Abstract The distribution of current‐use pesticides (CUPs) in seawater and their trophodynamics were investigated in 3 Canadian Arctic marine food chains. The greatest ranges of dissolved‐phase concentrations in seawater for each CUP were endosulfan sulfate (less than method detection limit (MDL) to 19 pg L −1 ) > dacthal (0.76 – 15 pg L −1 ) > chlorpyrifos (less than MDL to 8.1 pg L −1 ) > pentachloronitrobenzene (less than MDL to 2.6 pg L −1 ) > α‐endosulfan (0.20–2.3 pg L −1 ). Bioaccumulation factors (BAFs, water‐respiring organisms) were greatest in plankton, including chlorothalonil (log BAF = 7.4 ± 7.1 L kg −1 , mean ± standard error), chlorpyrifos (log BAF = 6.9 ± 6.7 L kg −1 ), and α‐endosulfan (log BAF = 6.5 ± 6.0 L kg −1 ). The largest biomagnification factors (BMFs) were found for dacthal in the capelin:plankton trophic relationship (BMF = 13 ± 5.0) at Cumberland Sound (Nunvavut), and for β‐endosulfan (BMF = 16 ± 4.9) and α‐endosulfan (BMF = 9.3 ± 2.8) in the polar bear—ringed seal relationship at Barrow and Rae Strait (NU), respectively. Concentrations of endosulfan sulfate exhibited trophic magnification (increasing concentrations with increasing trophic level) in the poikilothermic portion of the food web (trophic magnification factor = 1.4), but all of the CUPs underwent trophic dilution in the marine mammal food web, despite some trophic level–specific biomagnification. Together, these observations are most likely indicative of metabolism of these CUPs in mammals. Environ Toxicol Chem 2016;35:1695–1707. © 2016 SETAC Article in Journal/Newspaper Arctic Cumberland Sound ringed seal Wiley Online Library Arctic Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) Rae ENVELOPE(-116.053,-116.053,62.834,62.834) Rae Strait ENVELOPE(-94.926,-94.926,68.843,68.843) Environmental Toxicology and Chemistry 35 7 1695 1707 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The distribution of current‐use pesticides (CUPs) in seawater and their trophodynamics were investigated in 3 Canadian Arctic marine food chains. The greatest ranges of dissolved‐phase concentrations in seawater for each CUP were endosulfan sulfate (less than method detection limit (MDL) to 19 pg L −1 ) > dacthal (0.76 – 15 pg L −1 ) > chlorpyrifos (less than MDL to 8.1 pg L −1 ) > pentachloronitrobenzene (less than MDL to 2.6 pg L −1 ) > α‐endosulfan (0.20–2.3 pg L −1 ). Bioaccumulation factors (BAFs, water‐respiring organisms) were greatest in plankton, including chlorothalonil (log BAF = 7.4 ± 7.1 L kg −1 , mean ± standard error), chlorpyrifos (log BAF = 6.9 ± 6.7 L kg −1 ), and α‐endosulfan (log BAF = 6.5 ± 6.0 L kg −1 ). The largest biomagnification factors (BMFs) were found for dacthal in the capelin:plankton trophic relationship (BMF = 13 ± 5.0) at Cumberland Sound (Nunvavut), and for β‐endosulfan (BMF = 16 ± 4.9) and α‐endosulfan (BMF = 9.3 ± 2.8) in the polar bear—ringed seal relationship at Barrow and Rae Strait (NU), respectively. Concentrations of endosulfan sulfate exhibited trophic magnification (increasing concentrations with increasing trophic level) in the poikilothermic portion of the food web (trophic magnification factor = 1.4), but all of the CUPs underwent trophic dilution in the marine mammal food web, despite some trophic level–specific biomagnification. Together, these observations are most likely indicative of metabolism of these CUPs in mammals. Environ Toxicol Chem 2016;35:1695–1707. © 2016 SETAC |
format |
Article in Journal/Newspaper |
author |
Morris, Adam D. Muir, Derek C.G. Solomon, Keith R. Letcher, Robert J. McKinney, Melissa A. Fisk, Aaron T. McMeans, Bailey C. Tomy, Gregg T. Teixeira, Camilla Wang, Xiaowa Duric, Mark |
spellingShingle |
Morris, Adam D. Muir, Derek C.G. Solomon, Keith R. Letcher, Robert J. McKinney, Melissa A. Fisk, Aaron T. McMeans, Bailey C. Tomy, Gregg T. Teixeira, Camilla Wang, Xiaowa Duric, Mark Current‐use pesticides in seawater and their bioaccumulation in polar bear–ringed seal food chains of the Canadian Arctic |
author_facet |
Morris, Adam D. Muir, Derek C.G. Solomon, Keith R. Letcher, Robert J. McKinney, Melissa A. Fisk, Aaron T. McMeans, Bailey C. Tomy, Gregg T. Teixeira, Camilla Wang, Xiaowa Duric, Mark |
author_sort |
Morris, Adam D. |
title |
Current‐use pesticides in seawater and their bioaccumulation in polar bear–ringed seal food chains of the Canadian Arctic |
title_short |
Current‐use pesticides in seawater and their bioaccumulation in polar bear–ringed seal food chains of the Canadian Arctic |
title_full |
Current‐use pesticides in seawater and their bioaccumulation in polar bear–ringed seal food chains of the Canadian Arctic |
title_fullStr |
Current‐use pesticides in seawater and their bioaccumulation in polar bear–ringed seal food chains of the Canadian Arctic |
title_full_unstemmed |
Current‐use pesticides in seawater and their bioaccumulation in polar bear–ringed seal food chains of the Canadian Arctic |
title_sort |
current‐use pesticides in seawater and their bioaccumulation in polar bear–ringed seal food chains of the canadian arctic |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1002/etc.3427 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.3427 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.3427 |
long_lat |
ENVELOPE(-66.014,-66.014,65.334,65.334) ENVELOPE(-116.053,-116.053,62.834,62.834) ENVELOPE(-94.926,-94.926,68.843,68.843) |
geographic |
Arctic Cumberland Sound Rae Rae Strait |
geographic_facet |
Arctic Cumberland Sound Rae Rae Strait |
genre |
Arctic Cumberland Sound ringed seal |
genre_facet |
Arctic Cumberland Sound ringed seal |
op_source |
Environmental Toxicology and Chemistry volume 35, issue 7, page 1695-1707 ISSN 0730-7268 1552-8618 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/etc.3427 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
35 |
container_issue |
7 |
container_start_page |
1695 |
op_container_end_page |
1707 |
_version_ |
1800746345983639552 |