Bioaccumulation of PCBs, OCPs and PBDEs in Marine Mammals From West Antarctica
To understand the bioaccumulation and food web dynamics of persistent organic pollutants (POPs) as a function of species, age and sex in Antarctic mammals, blubber samples of 3 killer whales (Type C) and 77 pinnipeds (Weddell, Ross and crabeater seals) were collected from the Southern Ocean, Antarct...
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-3250 2023-06-11T04:07:01+02:00 Bioaccumulation of PCBs, OCPs and PBDEs in Marine Mammals From West Antarctica Khairy, Mohammed Brault, Emily Dickhut, Rebecca 2021-01-01T08:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/2249 https://doi.org/10.3389/fmars.2021.768715 https://scholarworks.wm.edu/context/vimsarticles/article/3250/viewcontent/fmars_08_768715.pdf https://scholarworks.wm.edu/context/vimsarticles/article/3250/filename/0/type/additional/viewcontent/Data_Sheet_1_Bioaccumulation_of_PCBs__OCPs.docx unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/2249 doi: doi:10.3389/fmars.2021.768715 https://scholarworks.wm.edu/context/vimsarticles/article/3250/viewcontent/fmars_08_768715.pdf https://scholarworks.wm.edu/context/vimsarticles/article/3250/filename/0/type/additional/viewcontent/Data_Sheet_1_Bioaccumulation_of_PCBs__OCPs.docx VIMS Articles Ross seal Weddell seal crabeater seal killer whale POPs DDT trophic magnification gene transcription Physical Sciences Peer-Reviewed Articles Marine Biology text 2021 ftwilliammarycol https://doi.org/10.3389/fmars.2021.768715</p>10.3389/fmars.2021.768715 2023-05-04T17:49:46Z To understand the bioaccumulation and food web dynamics of persistent organic pollutants (POPs) as a function of species, age and sex in Antarctic mammals, blubber samples of 3 killer whales (Type C) and 77 pinnipeds (Weddell, Ross and crabeater seals) were collected from the Southern Ocean, Antarctica. They were analyzed for polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) and polybrominated diphenyl ethers (PBDEs). ΣDDTs, Σ29PCBs and chlordanes (12 – 4,600, 13 – 1,600, and < 1.5 – 1,700 ng/g lipid, respectively) were the most abundant POPs. Killer whales typically displayed several times greater concentrations of POPs compared to seals, except for PBDEs. PCBs and PBDEs were consistently higher in adult crabeater and Weddell seal males, and in adult female Ross seals than in other sex and age groups reflecting an age accumulation and possible influence of segregated diet, foraging areas, and metabolic transformation rates. POPs concentrations significantly correlated with gene transcription of nuclear receptors involved in detoxification of contaminants and immune relevant cell mediators in the crabeater seals, indicating possible immunotoxic and deleterious health effects. This represents one of the largest studies on POPs in Antarctic marine predators and highlights the complexity of POPs bioaccumulation. Text Antarc* Antarctic Antarctica Crabeater Seal Crabeater Seals Killer Whale Ross Seal Southern Ocean Weddell Seal West Antarctica Killer whale W&M ScholarWorks Antarctic Southern Ocean Weddell West Antarctica |
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W&M ScholarWorks |
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topic |
Ross seal Weddell seal crabeater seal killer whale POPs DDT trophic magnification gene transcription Physical Sciences Peer-Reviewed Articles Marine Biology |
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Ross seal Weddell seal crabeater seal killer whale POPs DDT trophic magnification gene transcription Physical Sciences Peer-Reviewed Articles Marine Biology Khairy, Mohammed Brault, Emily Dickhut, Rebecca Bioaccumulation of PCBs, OCPs and PBDEs in Marine Mammals From West Antarctica |
topic_facet |
Ross seal Weddell seal crabeater seal killer whale POPs DDT trophic magnification gene transcription Physical Sciences Peer-Reviewed Articles Marine Biology |
description |
To understand the bioaccumulation and food web dynamics of persistent organic pollutants (POPs) as a function of species, age and sex in Antarctic mammals, blubber samples of 3 killer whales (Type C) and 77 pinnipeds (Weddell, Ross and crabeater seals) were collected from the Southern Ocean, Antarctica. They were analyzed for polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) and polybrominated diphenyl ethers (PBDEs). ΣDDTs, Σ29PCBs and chlordanes (12 – 4,600, 13 – 1,600, and < 1.5 – 1,700 ng/g lipid, respectively) were the most abundant POPs. Killer whales typically displayed several times greater concentrations of POPs compared to seals, except for PBDEs. PCBs and PBDEs were consistently higher in adult crabeater and Weddell seal males, and in adult female Ross seals than in other sex and age groups reflecting an age accumulation and possible influence of segregated diet, foraging areas, and metabolic transformation rates. POPs concentrations significantly correlated with gene transcription of nuclear receptors involved in detoxification of contaminants and immune relevant cell mediators in the crabeater seals, indicating possible immunotoxic and deleterious health effects. This represents one of the largest studies on POPs in Antarctic marine predators and highlights the complexity of POPs bioaccumulation. |
format |
Text |
author |
Khairy, Mohammed Brault, Emily Dickhut, Rebecca |
author_facet |
Khairy, Mohammed Brault, Emily Dickhut, Rebecca |
author_sort |
Khairy, Mohammed |
title |
Bioaccumulation of PCBs, OCPs and PBDEs in Marine Mammals From West Antarctica |
title_short |
Bioaccumulation of PCBs, OCPs and PBDEs in Marine Mammals From West Antarctica |
title_full |
Bioaccumulation of PCBs, OCPs and PBDEs in Marine Mammals From West Antarctica |
title_fullStr |
Bioaccumulation of PCBs, OCPs and PBDEs in Marine Mammals From West Antarctica |
title_full_unstemmed |
Bioaccumulation of PCBs, OCPs and PBDEs in Marine Mammals From West Antarctica |
title_sort |
bioaccumulation of pcbs, ocps and pbdes in marine mammals from west antarctica |
publisher |
W&M ScholarWorks |
publishDate |
2021 |
url |
https://scholarworks.wm.edu/vimsarticles/2249 https://doi.org/10.3389/fmars.2021.768715 https://scholarworks.wm.edu/context/vimsarticles/article/3250/viewcontent/fmars_08_768715.pdf https://scholarworks.wm.edu/context/vimsarticles/article/3250/filename/0/type/additional/viewcontent/Data_Sheet_1_Bioaccumulation_of_PCBs__OCPs.docx |
geographic |
Antarctic Southern Ocean Weddell West Antarctica |
geographic_facet |
Antarctic Southern Ocean Weddell West Antarctica |
genre |
Antarc* Antarctic Antarctica Crabeater Seal Crabeater Seals Killer Whale Ross Seal Southern Ocean Weddell Seal West Antarctica Killer whale |
genre_facet |
Antarc* Antarctic Antarctica Crabeater Seal Crabeater Seals Killer Whale Ross Seal Southern Ocean Weddell Seal West Antarctica Killer whale |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/2249 doi: doi:10.3389/fmars.2021.768715 https://scholarworks.wm.edu/context/vimsarticles/article/3250/viewcontent/fmars_08_768715.pdf https://scholarworks.wm.edu/context/vimsarticles/article/3250/filename/0/type/additional/viewcontent/Data_Sheet_1_Bioaccumulation_of_PCBs__OCPs.docx |
op_doi |
https://doi.org/10.3389/fmars.2021.768715</p>10.3389/fmars.2021.768715 |
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