Your browser doesn't support javascript.
loading
Chlorinated hydrocarbons in the tissues of South Polar Skuas (Catharacta maccormicki) and Adélie Penguins (Pygoscelis adeliea) from Ross Sea, Antarctica.
Court, G S; Davis, L S; Focardi, S; Bargargli, R; Fossi, C; Leonzio, C; Marili, L.
Afiliação
  • Court GS; Department of Zoology, University of Otago, Dunedin, New Zealand.
Environ Pollut ; 97(3): 295-301, 1997.
Article em En | MEDLINE | ID: mdl-15093368
ABSTRACT
High rates of egg infertility and embryo death in a colony of South Polar Skuas breeding in the Antarctic were similar to those in polluted North Atlantic populations of the Great Skua. Such loss could not be linked to factors such as organochlorine pollutants, as levels of DDE and PCBs in the contents of skua eggs from the population were only a small fraction of those in polluted skua populations from the Northern Hemisphere. Average eggshell thickness for skuas nesting on Ross Island has shown no significant change since the introduction of DDT. Concentrations of DDE and PCBs in South Polar Skuas were 13 and 22 times higher, respectively, than those in the eggs of sympatric Adélie Penguins, and this probably reflects the greater exposure of skuas to pollution when they migrate north of the Antarctic Convergence in winter. Residues in liver tissue showed a similar trend, and a higher rate of mixed function oxidase induction in skua liver compared to that of penguins is consistent with the trends seen in pollutant levels. The same PCB congener predominated in both skua and penguin samples. Comparisons with historical residue data suggest that global levels of DDT residues are declining.
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Environ Pollut Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 1997 Tipo de documento: Article País de afiliação: Nova Zelândia
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Environ Pollut Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 1997 Tipo de documento: Article País de afiliação: Nova Zelândia