Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica
peer reviewed Humpback whales, Megaptera novaeangliae, breeding off la Reunion Island (Indian Ocean) undergo large-scale seasonal migrations between summer feeding grounds near Antarctica and their reproductive winter grounds in the Indian Ocean. The main scope of the current study was to investigat...
Published in: | Environmental Pollution |
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Elsevier Science
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Online Access: | https://orbi.uliege.be/handle/2268/203318 https://orbi.uliege.be/bitstream/2268/203318/1/2017%20EP%20Das%20et%20al.pdf https://doi.org/10.1016/j.envpol.2016.11.032 |
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ftorbi:oai:orbi.ulg.ac.be:2268/203318 2024-04-21T07:46:46+00:00 Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica Das, Krishna Malarvannan, Govindan Dirtu, Alin Dulau, Violaine Dumont, Magali Lepoint, Gilles Mongin, Philippe Covaci, Adrian MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège 2017-01 https://orbi.uliege.be/handle/2268/203318 https://orbi.uliege.be/bitstream/2268/203318/1/2017%20EP%20Das%20et%20al.pdf https://doi.org/10.1016/j.envpol.2016.11.032 en eng Elsevier Science http://www.sciencedirect.com/science/article/pii/S0269749116321789 urn:issn:0269-7491 urn:issn:1873-6424 https://orbi.uliege.be/handle/2268/203318 info:hdl:2268/203318 https://orbi.uliege.be/bitstream/2268/203318/1/2017%20EP%20Das%20et%20al.pdf doi:10.1016/j.envpol.2016.11.032 scopus-id:2-s2.0-85001967129 info:pmid:27884466 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Environmental Pollution, 220, 1090-1099 (2017-01) baleen whale persistent organic pollutants stable isotopes Reunion Island Indian Ocean Life sciences Aquatic sciences & oceanology Environmental sciences & ecology Sciences du vivant Sciences aquatiques & océanologie Sciences de l’environnement & écologie journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2017 ftorbi https://doi.org/10.1016/j.envpol.2016.11.032 2024-03-27T14:53:04Z peer reviewed Humpback whales, Megaptera novaeangliae, breeding off la Reunion Island (Indian Ocean) undergo large-scale seasonal migrations between summer feeding grounds near Antarctica and their reproductive winter grounds in the Indian Ocean. The main scope of the current study was to investigate chemical exposure of humpback whales breeding in the Indian Ocean by providing the first published data on this breeding stock concerning persistent organic pollutants (POPs), namely polychlorinated biphenyls (PCBs), hexachlorobenzene (HCB), hexachlorocyclohexanes (HCHs), DDT and its metabolites (DDTs), chlordane compounds (CHLs), polybrominated diphenyl ethers (PBDEs), and methoxylated PBDEs (MeO-PBDEs). Analyses of stable isotopes δ13C and δ15N in skin resulted in further insight in their feeding ecology, which was in agreement with a diet focused mainly on low trophic level prey species, such as krill from Antarctica. POPs were measured in all humpback whales in the order of HCB > DDTs > CHLs > HCHs > PCBs > PBDEs > MeO-BDEs. HCB (median: 24 ng.g-1 lw) and DDTs (median: 7.7 ng.g-1 lw) were the predominant compounds in all whale biopsies. Among DDT compounds, p,p’-DDE was the major organohalogenated pollutant, reflecting its long-term accumulation in humpback whales. Significantly lower concentrations of HCB and DDTs were found in females than in males (p<0.001). Other compounds were similar between the two genders (p>0.05). Differences in the HCB and DDTs suggested gender-specific transfer of some compounds to the offspring. POP concentrations were lower than previously reported results for humpback whales sampled near the Antarctic Peninsula, suggesting potential influence of their nutritional status and may indicate different exposures of the whales according to their feeding zones. Further investigations are required to assess exposure of southern humpback whales throughout their feeding zones. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica baleen whale Megaptera novaeangliae University of Liège: ORBi (Open Repository and Bibliography) Environmental Pollution 220 1090 1099 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
baleen whale persistent organic pollutants stable isotopes Reunion Island Indian Ocean Life sciences Aquatic sciences & oceanology Environmental sciences & ecology Sciences du vivant Sciences aquatiques & océanologie Sciences de l’environnement & écologie |
spellingShingle |
baleen whale persistent organic pollutants stable isotopes Reunion Island Indian Ocean Life sciences Aquatic sciences & oceanology Environmental sciences & ecology Sciences du vivant Sciences aquatiques & océanologie Sciences de l’environnement & écologie Das, Krishna Malarvannan, Govindan Dirtu, Alin Dulau, Violaine Dumont, Magali Lepoint, Gilles Mongin, Philippe Covaci, Adrian Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica |
topic_facet |
baleen whale persistent organic pollutants stable isotopes Reunion Island Indian Ocean Life sciences Aquatic sciences & oceanology Environmental sciences & ecology Sciences du vivant Sciences aquatiques & océanologie Sciences de l’environnement & écologie |
description |
peer reviewed Humpback whales, Megaptera novaeangliae, breeding off la Reunion Island (Indian Ocean) undergo large-scale seasonal migrations between summer feeding grounds near Antarctica and their reproductive winter grounds in the Indian Ocean. The main scope of the current study was to investigate chemical exposure of humpback whales breeding in the Indian Ocean by providing the first published data on this breeding stock concerning persistent organic pollutants (POPs), namely polychlorinated biphenyls (PCBs), hexachlorobenzene (HCB), hexachlorocyclohexanes (HCHs), DDT and its metabolites (DDTs), chlordane compounds (CHLs), polybrominated diphenyl ethers (PBDEs), and methoxylated PBDEs (MeO-PBDEs). Analyses of stable isotopes δ13C and δ15N in skin resulted in further insight in their feeding ecology, which was in agreement with a diet focused mainly on low trophic level prey species, such as krill from Antarctica. POPs were measured in all humpback whales in the order of HCB > DDTs > CHLs > HCHs > PCBs > PBDEs > MeO-BDEs. HCB (median: 24 ng.g-1 lw) and DDTs (median: 7.7 ng.g-1 lw) were the predominant compounds in all whale biopsies. Among DDT compounds, p,p’-DDE was the major organohalogenated pollutant, reflecting its long-term accumulation in humpback whales. Significantly lower concentrations of HCB and DDTs were found in females than in males (p<0.001). Other compounds were similar between the two genders (p>0.05). Differences in the HCB and DDTs suggested gender-specific transfer of some compounds to the offspring. POP concentrations were lower than previously reported results for humpback whales sampled near the Antarctic Peninsula, suggesting potential influence of their nutritional status and may indicate different exposures of the whales according to their feeding zones. Further investigations are required to assess exposure of southern humpback whales throughout their feeding zones. |
author2 |
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège |
format |
Article in Journal/Newspaper |
author |
Das, Krishna Malarvannan, Govindan Dirtu, Alin Dulau, Violaine Dumont, Magali Lepoint, Gilles Mongin, Philippe Covaci, Adrian |
author_facet |
Das, Krishna Malarvannan, Govindan Dirtu, Alin Dulau, Violaine Dumont, Magali Lepoint, Gilles Mongin, Philippe Covaci, Adrian |
author_sort |
Das, Krishna |
title |
Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica |
title_short |
Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica |
title_full |
Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica |
title_fullStr |
Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica |
title_full_unstemmed |
Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica |
title_sort |
linking pollutant exposure of humpback whales breeding in the indian ocean to their feeding habits and feeding areas off antarctica |
publisher |
Elsevier Science |
publishDate |
2017 |
url |
https://orbi.uliege.be/handle/2268/203318 https://orbi.uliege.be/bitstream/2268/203318/1/2017%20EP%20Das%20et%20al.pdf https://doi.org/10.1016/j.envpol.2016.11.032 |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica baleen whale Megaptera novaeangliae |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica baleen whale Megaptera novaeangliae |
op_source |
Environmental Pollution, 220, 1090-1099 (2017-01) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0269749116321789 urn:issn:0269-7491 urn:issn:1873-6424 https://orbi.uliege.be/handle/2268/203318 info:hdl:2268/203318 https://orbi.uliege.be/bitstream/2268/203318/1/2017%20EP%20Das%20et%20al.pdf doi:10.1016/j.envpol.2016.11.032 scopus-id:2-s2.0-85001967129 info:pmid:27884466 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.envpol.2016.11.032 |
container_title |
Environmental Pollution |
container_volume |
220 |
container_start_page |
1090 |
op_container_end_page |
1099 |
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1796944482197831680 |