Organochlorine residues in South American sea lions, Otaria flavescens (Shaw, 1800): bioaccumulation and time trends.
Bull Environ Contam Toxicol
; 84(6): 731-7, 2010 Jun.
Article
em En
| MEDLINE
| ID: mdl-20458568
Blubber from stranded South American sea lions (Otaria flavescens) was sampled between 1991 and 2005 on the Peninsula Valdés in Argentina and analyzed for organochlorine (OC) pollutants. Mean blubber concentrations, expressed on an extractable basis, were 686 (SD = 1,060) ng g(-1) for dichlorodiphenyl trichloroethane (tDDT) and 735 (SD = 787) ng g(-1) for polychlorinated byphenils (PCB). The OC levels were well below those associated with adverse sublethal effects and lethality in mammals. OC concentrations showed statistically significant associations with age that were positive in males and negative in females. These trends are consistent with the majority of marine mammal populations studied. There were no trends in the levels of tDDT or PCB over time. In spite of the low levels detected, OC contamination was present consistently over the 14-year period, suggesting continuous inputs from geographic redistribution.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
/
Resíduos de Praguicidas
/
Tecido Adiposo
/
Leões-Marinhos
/
Hidrocarbonetos Clorados
Limite:
Animals
País/Região como assunto:
America do sul
Idioma:
En
Revista:
Bull Environ Contam Toxicol
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Espanha
País de publicação:
Estados Unidos