Fecal genotyping and contaminant analyses reveal variation in individual river otter exposure to localized persistent contaminants
Abstract The present study investigated polyhalogenated aromatic hydrocarbon (PHAH) concentrations in feces of known river otters ( Lontra canadensis ) along the coast of southern Vancouver Island, British Columbia, Canada. Specifically, we combined microsatellite genotyping of DNA from feces for in...
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crwiley:10.1002/etc.53 2024-06-02T08:16:01+00:00 Fecal genotyping and contaminant analyses reveal variation in individual river otter exposure to localized persistent contaminants Guertin, Daniel A. Harestad, Alton S. Ben‐David, Merav Drouillard, Ken G. Elliott, John E. 2009 http://dx.doi.org/10.1002/etc.53 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.53 https://onlinelibrary.wiley.com/doi/pdf/10.1002/etc.53 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/etc.53 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.53 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Toxicology and Chemistry volume 29, issue 2, page 275-284 ISSN 0730-7268 1552-8618 journal-article 2009 crwiley https://doi.org/10.1002/etc.53 2024-05-03T11:08:02Z Abstract The present study investigated polyhalogenated aromatic hydrocarbon (PHAH) concentrations in feces of known river otters ( Lontra canadensis ) along the coast of southern Vancouver Island, British Columbia, Canada. Specifically, we combined microsatellite genotyping of DNA from feces for individual identification with fecal contaminant analyses to evaluate exposure of 23 wild otters to organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and polybrominated diphenylethers (PBDEs). Overall, feces collected from otters in urban/industrial Victoria Harbor had the greatest concentrations of nearly all compounds assessed. Fecal concentrations of OCPs and PBDEs were generally low throughout the region, whereas PCBs dominated in all locations. Re‐sampling of known otters over space and time revealed that PCB exposure varied with movement and landscape use. Otters with the highest fecal PCB concentrations were those inhabiting the inner reaches of Victoria Harbor and adjacent Esquimalt Harbor, and those venturing into the harbor systems. Over 50% of samples collected from eight known otters in Victoria Harbor had total‐PCB concentrations above the maximum allowable concentration as established for Eurasian otter ( Lutra lutra ) feces, with a geometric mean value (10.6 mg/kg lipid wt) that exceeded the reproductive toxicity threshold (9 mg/kg lipid wt). Those results are consistent with our findings from 1998 and 2004, and indicate that the harbors of southern Vancouver Island, particularly Victoria Harbor, are a chronic source of PCB exposure for otters. The present study further demonstrates the suitability of using otter feces as a noninvasive/destructive biomonitoring tool in contaminant studies, particularly when sampling of the same individuals at the local population‐level is desired. Environ. Toxicol. Chem. 2010;29:275–284. © 2009 SETAC Article in Journal/Newspaper Lontra Lutra lutra Wiley Online Library British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Environmental Toxicology and Chemistry 29 2 275 284 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The present study investigated polyhalogenated aromatic hydrocarbon (PHAH) concentrations in feces of known river otters ( Lontra canadensis ) along the coast of southern Vancouver Island, British Columbia, Canada. Specifically, we combined microsatellite genotyping of DNA from feces for individual identification with fecal contaminant analyses to evaluate exposure of 23 wild otters to organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and polybrominated diphenylethers (PBDEs). Overall, feces collected from otters in urban/industrial Victoria Harbor had the greatest concentrations of nearly all compounds assessed. Fecal concentrations of OCPs and PBDEs were generally low throughout the region, whereas PCBs dominated in all locations. Re‐sampling of known otters over space and time revealed that PCB exposure varied with movement and landscape use. Otters with the highest fecal PCB concentrations were those inhabiting the inner reaches of Victoria Harbor and adjacent Esquimalt Harbor, and those venturing into the harbor systems. Over 50% of samples collected from eight known otters in Victoria Harbor had total‐PCB concentrations above the maximum allowable concentration as established for Eurasian otter ( Lutra lutra ) feces, with a geometric mean value (10.6 mg/kg lipid wt) that exceeded the reproductive toxicity threshold (9 mg/kg lipid wt). Those results are consistent with our findings from 1998 and 2004, and indicate that the harbors of southern Vancouver Island, particularly Victoria Harbor, are a chronic source of PCB exposure for otters. The present study further demonstrates the suitability of using otter feces as a noninvasive/destructive biomonitoring tool in contaminant studies, particularly when sampling of the same individuals at the local population‐level is desired. Environ. Toxicol. Chem. 2010;29:275–284. © 2009 SETAC |
format |
Article in Journal/Newspaper |
author |
Guertin, Daniel A. Harestad, Alton S. Ben‐David, Merav Drouillard, Ken G. Elliott, John E. |
spellingShingle |
Guertin, Daniel A. Harestad, Alton S. Ben‐David, Merav Drouillard, Ken G. Elliott, John E. Fecal genotyping and contaminant analyses reveal variation in individual river otter exposure to localized persistent contaminants |
author_facet |
Guertin, Daniel A. Harestad, Alton S. Ben‐David, Merav Drouillard, Ken G. Elliott, John E. |
author_sort |
Guertin, Daniel A. |
title |
Fecal genotyping and contaminant analyses reveal variation in individual river otter exposure to localized persistent contaminants |
title_short |
Fecal genotyping and contaminant analyses reveal variation in individual river otter exposure to localized persistent contaminants |
title_full |
Fecal genotyping and contaminant analyses reveal variation in individual river otter exposure to localized persistent contaminants |
title_fullStr |
Fecal genotyping and contaminant analyses reveal variation in individual river otter exposure to localized persistent contaminants |
title_full_unstemmed |
Fecal genotyping and contaminant analyses reveal variation in individual river otter exposure to localized persistent contaminants |
title_sort |
fecal genotyping and contaminant analyses reveal variation in individual river otter exposure to localized persistent contaminants |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1002/etc.53 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.53 https://onlinelibrary.wiley.com/doi/pdf/10.1002/etc.53 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/etc.53 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.53 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
British Columbia Canada |
geographic_facet |
British Columbia Canada |
genre |
Lontra Lutra lutra |
genre_facet |
Lontra Lutra lutra |
op_source |
Environmental Toxicology and Chemistry volume 29, issue 2, page 275-284 ISSN 0730-7268 1552-8618 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/etc.53 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
29 |
container_issue |
2 |
container_start_page |
275 |
op_container_end_page |
284 |
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1800740353366556672 |