Body measurements and blood plasma lipid, PCB and OH-PCB content of polar bear (U. maritimus) mothers and cubs, Svalbard
The aim of this study was to examine the plasma concentrations and prevalence of polychlorinated biphenyls (PCBs) and hydroxylated PCB-metabolites (OH-PCBs) in polar bear (Ursus maritimus) mothers (n = 26) and their 4 months old cubs-of-the-year (n = 38) from Svalbard to gain insight into the mother...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.808112 2024-09-15T18:14:51+00:00 Body measurements and blood plasma lipid, PCB and OH-PCB content of polar bear (U. maritimus) mothers and cubs, Svalbard Bytingsvik, Jenny Lie, Elisabeth Aars, Jon Derocher, Andrew E Wiig, Øystein Jenssen, Bjørn Munro MEDIAN LATITUDE: 77.700000 * MEDIAN LONGITUDE: 20.950000 * SOUTH-BOUND LATITUDE: 77.400000 * WEST-BOUND LONGITUDE: 18.000000 * NORTH-BOUND LATITUDE: 78.000000 * EAST-BOUND LONGITUDE: 23.900000 * DATE/TIME START: 1998-04-14T00:00:00 * DATE/TIME END: 2008-04-21T00:00:00 2012 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.808112 https://doi.org/10.1594/PANGAEA.808112 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.808112 https://doi.org/10.1594/PANGAEA.808112 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Bytingsvik, Jenny; Lie, Elisabeth; Aars, Jon; Derocher, Andrew E; Wiig, Øystein; Jenssen, Bjørn Munro (2012): PCBs and OH-PCBs in polar bear mother-cub pairs: A comparative plasma levels in 1998 and 2008. Science of the Total Environment, 417, 117-128, https://doi.org/10.1016/j.scitotenv.2011.12.033 International Polar Year (2007-2008) IPY dataset publication series 2012 ftpangaea https://doi.org/10.1594/PANGAEA.80811210.1016/j.scitotenv.2011.12.033 2024-07-24T02:31:21Z The aim of this study was to examine the plasma concentrations and prevalence of polychlorinated biphenyls (PCBs) and hydroxylated PCB-metabolites (OH-PCBs) in polar bear (Ursus maritimus) mothers (n = 26) and their 4 months old cubs-of-the-year (n = 38) from Svalbard to gain insight into the mother-cub transfer, biotransformation and to evaluate the health risk associated with the exposure to these contaminants. As samplings were performed in 1997/1998 and 2008, we further investigated the differences in levels and pattern of PCBs between the two sampling years. The plasma concentrations of Sum(21)PCBs (1997/1998: 5710 ± 3090 ng/g lipid weight [lw], 2008: 2560±1500 ng/g lw) and Sum(6)OH-PCBs (1997/1998: 228 ± 60 ng/g wet weight [ww], 2008: 80 ± 38 ng/g ww) in mothers were significantly lower in 2008 compared to in 1997/1998. In cubs, the plasma concentrations of Sum(21)PCBs (1997/1998: 14680 ± 5350 ng/g lw, 2008: 6070 ± 2590 ng/g lw) and Sum(6)OH-PCBs (1997/1998: 98 ± 23 ng/g ww, 2008: 49 ± 21 ng/g ww) were also significantly lower in 2008 than in 1997/1998. Sum(21)PCBs in cubs was 2.7 ± 0.7 times higher than in their mothers. This is due to a significant maternal transfer of these contaminants. In contrast, Sum(6)OH-PCBs in cubs were approximately 0.53 ± 0.16 times the concentration in their mothers. This indicates a lower maternal transfer of OH-PCBs compared to PCBs. The majority of the metabolite/precursor-ratios were lower in cubs compared to mothers. This may indicate that cubs have a lower endogenous capacity to biotransform PCBs to OH-PCBs than polar bear mothers. Exposure to PCBs and OH-PCBs is a potential health risk for polar bears, and the levels of PCBs and OH-PCBs in cubs from 2008 were still above levels associated with health effects in humans and wildlife. Other/Unknown Material International Polar Year IPY Svalbard Ursus maritimus PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(18.000000,23.900000,78.000000,77.400000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
International Polar Year (2007-2008) IPY |
spellingShingle |
International Polar Year (2007-2008) IPY Bytingsvik, Jenny Lie, Elisabeth Aars, Jon Derocher, Andrew E Wiig, Øystein Jenssen, Bjørn Munro Body measurements and blood plasma lipid, PCB and OH-PCB content of polar bear (U. maritimus) mothers and cubs, Svalbard |
topic_facet |
International Polar Year (2007-2008) IPY |
description |
The aim of this study was to examine the plasma concentrations and prevalence of polychlorinated biphenyls (PCBs) and hydroxylated PCB-metabolites (OH-PCBs) in polar bear (Ursus maritimus) mothers (n = 26) and their 4 months old cubs-of-the-year (n = 38) from Svalbard to gain insight into the mother-cub transfer, biotransformation and to evaluate the health risk associated with the exposure to these contaminants. As samplings were performed in 1997/1998 and 2008, we further investigated the differences in levels and pattern of PCBs between the two sampling years. The plasma concentrations of Sum(21)PCBs (1997/1998: 5710 ± 3090 ng/g lipid weight [lw], 2008: 2560±1500 ng/g lw) and Sum(6)OH-PCBs (1997/1998: 228 ± 60 ng/g wet weight [ww], 2008: 80 ± 38 ng/g ww) in mothers were significantly lower in 2008 compared to in 1997/1998. In cubs, the plasma concentrations of Sum(21)PCBs (1997/1998: 14680 ± 5350 ng/g lw, 2008: 6070 ± 2590 ng/g lw) and Sum(6)OH-PCBs (1997/1998: 98 ± 23 ng/g ww, 2008: 49 ± 21 ng/g ww) were also significantly lower in 2008 than in 1997/1998. Sum(21)PCBs in cubs was 2.7 ± 0.7 times higher than in their mothers. This is due to a significant maternal transfer of these contaminants. In contrast, Sum(6)OH-PCBs in cubs were approximately 0.53 ± 0.16 times the concentration in their mothers. This indicates a lower maternal transfer of OH-PCBs compared to PCBs. The majority of the metabolite/precursor-ratios were lower in cubs compared to mothers. This may indicate that cubs have a lower endogenous capacity to biotransform PCBs to OH-PCBs than polar bear mothers. Exposure to PCBs and OH-PCBs is a potential health risk for polar bears, and the levels of PCBs and OH-PCBs in cubs from 2008 were still above levels associated with health effects in humans and wildlife. |
format |
Other/Unknown Material |
author |
Bytingsvik, Jenny Lie, Elisabeth Aars, Jon Derocher, Andrew E Wiig, Øystein Jenssen, Bjørn Munro |
author_facet |
Bytingsvik, Jenny Lie, Elisabeth Aars, Jon Derocher, Andrew E Wiig, Øystein Jenssen, Bjørn Munro |
author_sort |
Bytingsvik, Jenny |
title |
Body measurements and blood plasma lipid, PCB and OH-PCB content of polar bear (U. maritimus) mothers and cubs, Svalbard |
title_short |
Body measurements and blood plasma lipid, PCB and OH-PCB content of polar bear (U. maritimus) mothers and cubs, Svalbard |
title_full |
Body measurements and blood plasma lipid, PCB and OH-PCB content of polar bear (U. maritimus) mothers and cubs, Svalbard |
title_fullStr |
Body measurements and blood plasma lipid, PCB and OH-PCB content of polar bear (U. maritimus) mothers and cubs, Svalbard |
title_full_unstemmed |
Body measurements and blood plasma lipid, PCB and OH-PCB content of polar bear (U. maritimus) mothers and cubs, Svalbard |
title_sort |
body measurements and blood plasma lipid, pcb and oh-pcb content of polar bear (u. maritimus) mothers and cubs, svalbard |
publisher |
PANGAEA |
publishDate |
2012 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.808112 https://doi.org/10.1594/PANGAEA.808112 |
op_coverage |
MEDIAN LATITUDE: 77.700000 * MEDIAN LONGITUDE: 20.950000 * SOUTH-BOUND LATITUDE: 77.400000 * WEST-BOUND LONGITUDE: 18.000000 * NORTH-BOUND LATITUDE: 78.000000 * EAST-BOUND LONGITUDE: 23.900000 * DATE/TIME START: 1998-04-14T00:00:00 * DATE/TIME END: 2008-04-21T00:00:00 |
long_lat |
ENVELOPE(18.000000,23.900000,78.000000,77.400000) |
genre |
International Polar Year IPY Svalbard Ursus maritimus |
genre_facet |
International Polar Year IPY Svalbard Ursus maritimus |
op_source |
Supplement to: Bytingsvik, Jenny; Lie, Elisabeth; Aars, Jon; Derocher, Andrew E; Wiig, Øystein; Jenssen, Bjørn Munro (2012): PCBs and OH-PCBs in polar bear mother-cub pairs: A comparative plasma levels in 1998 and 2008. Science of the Total Environment, 417, 117-128, https://doi.org/10.1016/j.scitotenv.2011.12.033 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.808112 https://doi.org/10.1594/PANGAEA.808112 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.80811210.1016/j.scitotenv.2011.12.033 |
_version_ |
1810452637703733248 |