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Humpback whales (Megaptera novaeangliae) breeding off Mozambique and Ecuador show geographic variation of persistent organic pollutants and isotopic niches.
Remili, Anaïs; Gallego, Pierre; Pinzone, Marianna; Castro, Cristina; Jauniaux, Thierry; Garigliany, Mutien-Marie; Malarvannan, Govindan; Covaci, Adrian; Das, Krishna.
Afiliação
  • Remili A; Freshwater and Oceanic Sciences Unit of ReSearch (FOCUS - Oceanology), University of Liege, 4000, Liege, Belgium; Department of Natural Resource Sciences, McGill University, Sainte-Anne-de-Bellevue, QC, H9X 3V9, Canada.
  • Gallego P; Freshwater and Oceanic Sciences Unit of ReSearch (FOCUS - Oceanology), University of Liege, 4000, Liege, Belgium; Odyssea asbl., 37 rue du Nord, L-4260, Esch-sur-Alzette, Luxembourg.
  • Pinzone M; Freshwater and Oceanic Sciences Unit of ReSearch (FOCUS - Oceanology), University of Liege, 4000, Liege, Belgium.
  • Castro C; Pacific Whale Foundation Ecuador, Malecón Julio Izurieta y Abdón Calderón. Palo Santo Travel, Puerto López - Manabí - Ecuador.
  • Jauniaux T; Department of Pathology, Veterinary College, University of Liege, Sart Tilman B43, 4000, Liege, Belgium.
  • Garigliany MM; Department of Pathology, Veterinary College, University of Liege, Sart Tilman B43, 4000, Liege, Belgium.
  • Malarvannan G; Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium.
  • Covaci A; Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium.
  • Das K; Freshwater and Oceanic Sciences Unit of ReSearch (FOCUS - Oceanology), University of Liege, 4000, Liege, Belgium. Electronic address: Krishna.das@uliege.be.
Environ Pollut ; 267: 115575, 2020 Dec.
Article em En | MEDLINE | ID: mdl-33254700
Humpback whales (Megaptera novaeangliae) from the Southern Hemisphere carry information on persistent organic pollutants (POPs) from their feeding zones in Antarctica to their breeding grounds, making this species a sentinel of contaminants accumulation in the Southern Ocean. This study aimed to evaluate driving factors, namely feeding areas, trophic level, and sex, affecting POP concentrations in the blubber of humpback whales breeding off Mozambique and off Ecuador. Biopsies of free-ranging humpback whales including blubber and skin were collected in 2014 and 2015 from Ecuador (n = 59) and in 2017 from Mozambique (n = 89). In both populations, HCB was the major contaminant followed by DDTs > CHLs > PCBs > HCHs > PBDEs. POP concentrations were significantly higher in males compared to females. HCB, DDTs, HCHs and PBDEs were significantly different between whales from the Mozambique population and the Ecuador population. Sex and feeding habits were important driving factors accounting for POP concentrations in Ecuador whales. The whales from our study had some of the lowest POP concentrations measured for humpback whales in the world. These whales fed predominantly on krill as reflected from the low δ13C and δ15N values measured in the skin. However, the isotopic niches of whales from Mozambique and Ecuador did not overlap indicating that the two populations are feeding in different areas of the Southern Ocean.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Ambientais / Jubarte Limite: Animals País/Região como assunto: Africa / America do sul / Ecuador Idioma: En Revista: Environ Pollut Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Canadá País de publicação: Reino Unido
Texto completo
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XML
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Ambientais / Jubarte Limite: Animals País/Região como assunto: Africa / America do sul / Ecuador Idioma: En Revista: Environ Pollut Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Canadá País de publicação: Reino Unido