Chlorinated pesticide concentrations in harp seals (Phoca Groenlandica) from the Barents Sea
Harp seals (Phoca groenlandica) from the Barents Sea were analyzed for blubber levels of polychlorinated biphenyls(PCBs), polychlorinated camphenes (PCCs; toxaphenes), DDT and its metabolites, hexachlorobenzene (HCB), hexachlorocyclohexanes(HCHs), and the cyclodiene pesticides, including dieldrin, e...
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Norwegian Polar Institute
2008
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Online Access: | http://data.npolar.no/dataset/9fc83f58-d767-5e4e-9121-a99731c4d262 |
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npolardata:oai:npolar.no:dataset/9fc83f58-d767-5e4e-9121-a99731c4d262 2024-03-03T22:15:37+00:00 Chlorinated pesticide concentrations in harp seals (Phoca Groenlandica) from the Barents Sea Wolkers, Hans Lydersen, Christian Burkow, Ivan C. Witkamp, Renger F. BEGINDATE: 1997-08-01 ENDDATE: 1997-08-31 ENVELOPE(35.0,35.0,75.0,75.0) OCEAN, ATLANTIC OCEAN, NORTH ATLANTIC OCEAN, SVALBARD AND JAN MAYEN, Barentshavet GEOGRAPHIC REGION, ARCTIC GEOGRAPHIC REGION, POLAR 2008-07-10 http://data.npolar.no/dataset/9fc83f58-d767-5e4e-9121-a99731c4d262 unknown Norwegian Polar Institute BIOTA biology EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES SEALS/SEA LIONS/WALRUSES BIOSPHERE ECOLOGICAL DYNAMICS Dataset 2008 npolardata 2017-09-07T07:14:17Z Harp seals (Phoca groenlandica) from the Barents Sea were analyzed for blubber levels of polychlorinated biphenyls(PCBs), polychlorinated camphenes (PCCs; toxaphenes), DDT and its metabolites, hexachlorobenzene (HCB), hexachlorocyclohexanes(HCHs), and the cyclodiene pesticides, including dieldrin, endrin, and the chlordanes. Also, the hepatic cytochrome P450(CYP) enzyme activities were measured to assess a possible relation between CYP activities and pesticide levels. Furthermore, thebioaccumulation potential and persistency of these compounds were evaluated. PCCs were the dominant contaminants, exceedingthe PCB concentrations. Individual PCC congener levels (Tox 26 and 50) were fourfold greater than those in the Canadian Arcticand 20-fold greater than those in seals from the west coast of Svalbard, suggesting that the Barents Sea is exposed to PCCs by alocal source. The biomagnification factor and the metabolic index were greatest for p,p-DDT, HCB, b-HCH, and the chlordanestrans-nonachlor and U82. The other pesticides showed lesser values, suggesting metabolism. The ethoxyresorufin-O-deethylationactivity (CYP1A) was high and not correlated with any of the pesticides, whereas a high correlation (r2 adjusted . 50%) was foundbetween the PCCs and testosterone 6-b hydroxylation activities (CYP3A). This suggests an induction of CYP3A-like activity byPCC exposure. Dataset Arctic Barents Sea Barentshav* Jan Mayen North Atlantic Phoca groenlandica Svalbard walrus* Norwegian Polar Data Centre Arctic Barents Sea Jan Mayen Svalbard Svalbard ENVELOPE(20.000,20.000,78.000,78.000) ENVELOPE(35.0,35.0,75.0,75.0) |
institution |
Open Polar |
collection |
Norwegian Polar Data Centre |
op_collection_id |
npolardata |
language |
unknown |
topic |
BIOTA biology EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES SEALS/SEA LIONS/WALRUSES BIOSPHERE ECOLOGICAL DYNAMICS |
spellingShingle |
BIOTA biology EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES SEALS/SEA LIONS/WALRUSES BIOSPHERE ECOLOGICAL DYNAMICS Wolkers, Hans Lydersen, Christian Burkow, Ivan C. Witkamp, Renger F. Chlorinated pesticide concentrations in harp seals (Phoca Groenlandica) from the Barents Sea |
topic_facet |
BIOTA biology EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES SEALS/SEA LIONS/WALRUSES BIOSPHERE ECOLOGICAL DYNAMICS |
description |
Harp seals (Phoca groenlandica) from the Barents Sea were analyzed for blubber levels of polychlorinated biphenyls(PCBs), polychlorinated camphenes (PCCs; toxaphenes), DDT and its metabolites, hexachlorobenzene (HCB), hexachlorocyclohexanes(HCHs), and the cyclodiene pesticides, including dieldrin, endrin, and the chlordanes. Also, the hepatic cytochrome P450(CYP) enzyme activities were measured to assess a possible relation between CYP activities and pesticide levels. Furthermore, thebioaccumulation potential and persistency of these compounds were evaluated. PCCs were the dominant contaminants, exceedingthe PCB concentrations. Individual PCC congener levels (Tox 26 and 50) were fourfold greater than those in the Canadian Arcticand 20-fold greater than those in seals from the west coast of Svalbard, suggesting that the Barents Sea is exposed to PCCs by alocal source. The biomagnification factor and the metabolic index were greatest for p,p-DDT, HCB, b-HCH, and the chlordanestrans-nonachlor and U82. The other pesticides showed lesser values, suggesting metabolism. The ethoxyresorufin-O-deethylationactivity (CYP1A) was high and not correlated with any of the pesticides, whereas a high correlation (r2 adjusted . 50%) was foundbetween the PCCs and testosterone 6-b hydroxylation activities (CYP3A). This suggests an induction of CYP3A-like activity byPCC exposure. |
format |
Dataset |
author |
Wolkers, Hans Lydersen, Christian Burkow, Ivan C. Witkamp, Renger F. |
author_facet |
Wolkers, Hans Lydersen, Christian Burkow, Ivan C. Witkamp, Renger F. |
author_sort |
Wolkers, Hans |
title |
Chlorinated pesticide concentrations in harp seals (Phoca Groenlandica) from the Barents Sea |
title_short |
Chlorinated pesticide concentrations in harp seals (Phoca Groenlandica) from the Barents Sea |
title_full |
Chlorinated pesticide concentrations in harp seals (Phoca Groenlandica) from the Barents Sea |
title_fullStr |
Chlorinated pesticide concentrations in harp seals (Phoca Groenlandica) from the Barents Sea |
title_full_unstemmed |
Chlorinated pesticide concentrations in harp seals (Phoca Groenlandica) from the Barents Sea |
title_sort |
chlorinated pesticide concentrations in harp seals (phoca groenlandica) from the barents sea |
publisher |
Norwegian Polar Institute |
publishDate |
2008 |
url |
http://data.npolar.no/dataset/9fc83f58-d767-5e4e-9121-a99731c4d262 |
op_coverage |
BEGINDATE: 1997-08-01 ENDDATE: 1997-08-31 ENVELOPE(35.0,35.0,75.0,75.0) OCEAN, ATLANTIC OCEAN, NORTH ATLANTIC OCEAN, SVALBARD AND JAN MAYEN, Barentshavet GEOGRAPHIC REGION, ARCTIC GEOGRAPHIC REGION, POLAR |
long_lat |
ENVELOPE(20.000,20.000,78.000,78.000) ENVELOPE(35.0,35.0,75.0,75.0) |
geographic |
Arctic Barents Sea Jan Mayen Svalbard Svalbard |
geographic_facet |
Arctic Barents Sea Jan Mayen Svalbard Svalbard |
genre |
Arctic Barents Sea Barentshav* Jan Mayen North Atlantic Phoca groenlandica Svalbard walrus* |
genre_facet |
Arctic Barents Sea Barentshav* Jan Mayen North Atlantic Phoca groenlandica Svalbard walrus* |
_version_ |
1792545070650490880 |