Trophodynamics of current use pesticides and ecological relationships in the Bathurst region vegetation‐caribou‐wolf food chain of the Canadian Arctic
Abstract The bioaccumulation of current use pesticides (CUPs) and stable isotopes of carbon and nitrogen were investigated in vegetation‐caribou‐wolf food chain in the Bathurst region (Nunavut, Canada). Volumetric bioconcentration factors (BCF v ) in vegetation were generally greatest for dacthal (1...
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crwiley:10.1002/etc.2634 2024-06-02T08:02:28+00:00 Trophodynamics of current use pesticides and ecological relationships in the Bathurst region vegetation‐caribou‐wolf food chain of the Canadian Arctic Morris, Adam D. Muir, Derek C.G. Solomon, Keith R. Teixeira, Camilla Duric, Mark Wang, Xiaowa Environment Canada Molson Foundation Northern Contaminants Program 2014 http://dx.doi.org/10.1002/etc.2634 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.2634 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.2634 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Toxicology and Chemistry volume 33, issue 9, page 1956-1966 ISSN 0730-7268 1552-8618 journal-article 2014 crwiley https://doi.org/10.1002/etc.2634 2024-05-03T11:02:31Z Abstract The bioaccumulation of current use pesticides (CUPs) and stable isotopes of carbon and nitrogen were investigated in vegetation‐caribou‐wolf food chain in the Bathurst region (Nunavut, Canada). Volumetric bioconcentration factors (BCF v ) in vegetation were generally greatest for dacthal (10–12) ≥ endosulfan sulfate (10–11) > ß‐endosulfan (>9.0–9.7) ≥ pentachloronitrobenzene (PCNB; 8.4–9.6) > α‐endosulfan (8.3–9.3) > chlorpyrifos (8.0–8.7) >chlorothalonil (7.6–8.3). The BCF v values in vegetation were significantly correlated with the logarithm of the octanol–air partition coefficients (log K OA ) of CUPs ( r 2 = 0.90, p = 0.0040), although dacthal was an outlier and not included in this relationship. Most biomagnification factors (BMFs) for CUPs in caribou:diet comparisons were significantly less than 1. Similarly, the majority of wolf:caribou BMFs were either significantly less than 1 or were not statistically greater than 1. Significant trophic magnification factors (TMFs) were all less than 1, indicating that these CUPs exhibit trophic dilution through this terrestrial food chain. The log K OA reasonably predicted bioconcentration in vegetation for most CUPs but was not correlated with BMFs or TMFs in mammals. Our results, along with those of metabolic studies, suggest that mammals actively metabolize these CUPs, limiting their biomagnification potential despite entry into the food chain through effective bioconcentration in vegetation. Environ Toxicol Chem 2014; 33:1956–1966. © 2014 SETAC Article in Journal/Newspaper Arctic Nunavut Wiley Online Library Arctic Canada Nunavut Environmental Toxicology and Chemistry 33 9 1956 1966 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract The bioaccumulation of current use pesticides (CUPs) and stable isotopes of carbon and nitrogen were investigated in vegetation‐caribou‐wolf food chain in the Bathurst region (Nunavut, Canada). Volumetric bioconcentration factors (BCF v ) in vegetation were generally greatest for dacthal (10–12) ≥ endosulfan sulfate (10–11) > ß‐endosulfan (>9.0–9.7) ≥ pentachloronitrobenzene (PCNB; 8.4–9.6) > α‐endosulfan (8.3–9.3) > chlorpyrifos (8.0–8.7) >chlorothalonil (7.6–8.3). The BCF v values in vegetation were significantly correlated with the logarithm of the octanol–air partition coefficients (log K OA ) of CUPs ( r 2 = 0.90, p = 0.0040), although dacthal was an outlier and not included in this relationship. Most biomagnification factors (BMFs) for CUPs in caribou:diet comparisons were significantly less than 1. Similarly, the majority of wolf:caribou BMFs were either significantly less than 1 or were not statistically greater than 1. Significant trophic magnification factors (TMFs) were all less than 1, indicating that these CUPs exhibit trophic dilution through this terrestrial food chain. The log K OA reasonably predicted bioconcentration in vegetation for most CUPs but was not correlated with BMFs or TMFs in mammals. Our results, along with those of metabolic studies, suggest that mammals actively metabolize these CUPs, limiting their biomagnification potential despite entry into the food chain through effective bioconcentration in vegetation. Environ Toxicol Chem 2014; 33:1956–1966. © 2014 SETAC |
author2 |
Environment Canada Molson Foundation Northern Contaminants Program |
format |
Article in Journal/Newspaper |
author |
Morris, Adam D. Muir, Derek C.G. Solomon, Keith R. Teixeira, Camilla Duric, Mark Wang, Xiaowa |
spellingShingle |
Morris, Adam D. Muir, Derek C.G. Solomon, Keith R. Teixeira, Camilla Duric, Mark Wang, Xiaowa Trophodynamics of current use pesticides and ecological relationships in the Bathurst region vegetation‐caribou‐wolf food chain of the Canadian Arctic |
author_facet |
Morris, Adam D. Muir, Derek C.G. Solomon, Keith R. Teixeira, Camilla Duric, Mark Wang, Xiaowa |
author_sort |
Morris, Adam D. |
title |
Trophodynamics of current use pesticides and ecological relationships in the Bathurst region vegetation‐caribou‐wolf food chain of the Canadian Arctic |
title_short |
Trophodynamics of current use pesticides and ecological relationships in the Bathurst region vegetation‐caribou‐wolf food chain of the Canadian Arctic |
title_full |
Trophodynamics of current use pesticides and ecological relationships in the Bathurst region vegetation‐caribou‐wolf food chain of the Canadian Arctic |
title_fullStr |
Trophodynamics of current use pesticides and ecological relationships in the Bathurst region vegetation‐caribou‐wolf food chain of the Canadian Arctic |
title_full_unstemmed |
Trophodynamics of current use pesticides and ecological relationships in the Bathurst region vegetation‐caribou‐wolf food chain of the Canadian Arctic |
title_sort |
trophodynamics of current use pesticides and ecological relationships in the bathurst region vegetation‐caribou‐wolf food chain of the canadian arctic |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1002/etc.2634 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.2634 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.2634 |
geographic |
Arctic Canada Nunavut |
geographic_facet |
Arctic Canada Nunavut |
genre |
Arctic Nunavut |
genre_facet |
Arctic Nunavut |
op_source |
Environmental Toxicology and Chemistry volume 33, issue 9, page 1956-1966 ISSN 0730-7268 1552-8618 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/etc.2634 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
33 |
container_issue |
9 |
container_start_page |
1956 |
op_container_end_page |
1966 |
_version_ |
1800746953962684416 |