Levels and profiles of chlorinated and brominated contaminants in Southern Hemisphere humpback whales, **Megaptera novaeangliae**
Abstract: The study documents the levels and profiles of selected contaminants [polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs) and methoxylated PBDEs (MeO-PBDE5)] in blubber biopsy samples collected from humpback whales (Megaptera novaeangl...
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2015
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ftunivantwerpen:c:irua:132522 2023-07-16T03:54:09+02:00 Levels and profiles of chlorinated and brominated contaminants in Southern Hemisphere humpback whales, **Megaptera novaeangliae** Dorneles, Paulo R. Lailson-Brito, Jose Secchi, Eduardo R. Dirtu Weijs, Liesbeth Rosa, Luciano Dalla Bassoi, Manuela Cunha, Haydee A. Azevedo, Alexandre F. Covaci, Adrian 2015 https://hdl.handle.net/10067/1325220151162165141 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1016/J.ENVRES.2015.02.007 info:eu-repo/semantics/altIdentifier/isi/000353011300007 info:eu-repo/semantics/closedAccess 0013-9351 Environmental research Chemistry Biology Human medicine info:eu-repo/semantics/article 2015 ftunivantwerpen https://doi.org/10.1016/J.ENVRES.2015.02.007 2023-06-26T22:20:06Z Abstract: The study documents the levels and profiles of selected contaminants [polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs) and methoxylated PBDEs (MeO-PBDE5)] in blubber biopsy samples collected from humpback whales (Megaptera novaeangliae) in Antarctic Peninsula waters. In addition, we investigated year-to-year and sex-related differences in the bioaccumulation patterns. Except for hexachlorobenzene (HCB), whose concentrations were in the same range as those found in whales from the Northern Hemisphere, levels of all other compounds were lower in Southern Hemisphere whales compared to literature data on animals from the Arctic and subarctic region. The mean contribution to the sum of all anthropogenic organohalogen compounds (Sigma OHC) decreased in the following order Sigma PCBs (44%) > HCB (31%) > Sigma DDXs (13%) > Sigma CHLs (4.6%) > Sigma HCHs (4.4%) > Sigma PBDEs (0.9%). The predominant compounds within each chemical class were: PCBs 153, 149, 101 and 138; p,p'-DDE; gamma-HCH; trans-nonachlor; PBDEs 99 and 47. The most dominant MeO-PBDE congener was 6-MeO-BDE 47. As samples were collected during three consecutive summer seasons, year-to-year trends could be assessed indicating a significant decrease from 2000 to 2003 for Sigma CHL levels. Higher Sigma PBDE concentrations and higher values of the Sigma PBDE / Sigma MeO-PBDE ratio, as well as higher ratios between the two MeO-BDEs (2'-MeO-BDE 68/6-MeO-BDE 47) were found in females compared to males. Higher Sigma MeO-PBDE concentrations and higher values of the ratios between the lower chlorinated and the higher chlorinated PCBs were found in males than in females. In addition, five out of six significant differences found through discriminant function analysis were gender-related. The literature reports both feeding in mid- to low-latitudes and sex-related differences in migration patterns for humpback whales from the Southern Hemisphere, indicating that the hypothesis of dietary ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Arctic Megaptera novaeangliae Subarctic IRUA - Institutional Repository van de Universiteit Antwerpen Antarctic Antarctic Peninsula Arctic Environmental Research 138 49 57 |
institution |
Open Polar |
collection |
IRUA - Institutional Repository van de Universiteit Antwerpen |
op_collection_id |
ftunivantwerpen |
language |
English |
topic |
Chemistry Biology Human medicine |
spellingShingle |
Chemistry Biology Human medicine Dorneles, Paulo R. Lailson-Brito, Jose Secchi, Eduardo R. Dirtu Weijs, Liesbeth Rosa, Luciano Dalla Bassoi, Manuela Cunha, Haydee A. Azevedo, Alexandre F. Covaci, Adrian Levels and profiles of chlorinated and brominated contaminants in Southern Hemisphere humpback whales, **Megaptera novaeangliae** |
topic_facet |
Chemistry Biology Human medicine |
description |
Abstract: The study documents the levels and profiles of selected contaminants [polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs) and methoxylated PBDEs (MeO-PBDE5)] in blubber biopsy samples collected from humpback whales (Megaptera novaeangliae) in Antarctic Peninsula waters. In addition, we investigated year-to-year and sex-related differences in the bioaccumulation patterns. Except for hexachlorobenzene (HCB), whose concentrations were in the same range as those found in whales from the Northern Hemisphere, levels of all other compounds were lower in Southern Hemisphere whales compared to literature data on animals from the Arctic and subarctic region. The mean contribution to the sum of all anthropogenic organohalogen compounds (Sigma OHC) decreased in the following order Sigma PCBs (44%) > HCB (31%) > Sigma DDXs (13%) > Sigma CHLs (4.6%) > Sigma HCHs (4.4%) > Sigma PBDEs (0.9%). The predominant compounds within each chemical class were: PCBs 153, 149, 101 and 138; p,p'-DDE; gamma-HCH; trans-nonachlor; PBDEs 99 and 47. The most dominant MeO-PBDE congener was 6-MeO-BDE 47. As samples were collected during three consecutive summer seasons, year-to-year trends could be assessed indicating a significant decrease from 2000 to 2003 for Sigma CHL levels. Higher Sigma PBDE concentrations and higher values of the Sigma PBDE / Sigma MeO-PBDE ratio, as well as higher ratios between the two MeO-BDEs (2'-MeO-BDE 68/6-MeO-BDE 47) were found in females compared to males. Higher Sigma MeO-PBDE concentrations and higher values of the ratios between the lower chlorinated and the higher chlorinated PCBs were found in males than in females. In addition, five out of six significant differences found through discriminant function analysis were gender-related. The literature reports both feeding in mid- to low-latitudes and sex-related differences in migration patterns for humpback whales from the Southern Hemisphere, indicating that the hypothesis of dietary ... |
format |
Article in Journal/Newspaper |
author |
Dorneles, Paulo R. Lailson-Brito, Jose Secchi, Eduardo R. Dirtu Weijs, Liesbeth Rosa, Luciano Dalla Bassoi, Manuela Cunha, Haydee A. Azevedo, Alexandre F. Covaci, Adrian |
author_facet |
Dorneles, Paulo R. Lailson-Brito, Jose Secchi, Eduardo R. Dirtu Weijs, Liesbeth Rosa, Luciano Dalla Bassoi, Manuela Cunha, Haydee A. Azevedo, Alexandre F. Covaci, Adrian |
author_sort |
Dorneles, Paulo R. |
title |
Levels and profiles of chlorinated and brominated contaminants in Southern Hemisphere humpback whales, **Megaptera novaeangliae** |
title_short |
Levels and profiles of chlorinated and brominated contaminants in Southern Hemisphere humpback whales, **Megaptera novaeangliae** |
title_full |
Levels and profiles of chlorinated and brominated contaminants in Southern Hemisphere humpback whales, **Megaptera novaeangliae** |
title_fullStr |
Levels and profiles of chlorinated and brominated contaminants in Southern Hemisphere humpback whales, **Megaptera novaeangliae** |
title_full_unstemmed |
Levels and profiles of chlorinated and brominated contaminants in Southern Hemisphere humpback whales, **Megaptera novaeangliae** |
title_sort |
levels and profiles of chlorinated and brominated contaminants in southern hemisphere humpback whales, **megaptera novaeangliae** |
publishDate |
2015 |
url |
https://hdl.handle.net/10067/1325220151162165141 |
geographic |
Antarctic Antarctic Peninsula Arctic |
geographic_facet |
Antarctic Antarctic Peninsula Arctic |
genre |
Antarc* Antarctic Antarctic Peninsula Arctic Megaptera novaeangliae Subarctic |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Arctic Megaptera novaeangliae Subarctic |
op_source |
0013-9351 Environmental research |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/J.ENVRES.2015.02.007 info:eu-repo/semantics/altIdentifier/isi/000353011300007 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/J.ENVRES.2015.02.007 |
container_title |
Environmental Research |
container_volume |
138 |
container_start_page |
49 |
op_container_end_page |
57 |
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1771551359098683392 |