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Lead in blood and eggs of the sea turtle, Lepidochelys olivacea, from the Eastern Pacific: concentration, isotopic composition and maternal transfer.
Páez-Osuna, F; Calderón-Campuzano, M F; Soto-Jiménez, M F; Ruelas-Inzunza, J R.
Afiliação
  • Páez-Osuna F; Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, P.O. Box 811, Mazatlán 82040, Sinaloa, Mexico. paezos@ola.icmyl.unam.mx
Mar Pollut Bull ; 60(3): 433-9, 2010 Mar.
Article em En | MEDLINE | ID: mdl-19897213
Concentrations of lead were assessed in the sea turtle, Lepidochelys olivacea, from a nesting colony of the Eastern Pacific. Twenty-five female turtles were sampled and a total of 250 eggs were collected during the "arribada" event of the 2005-2006 season. Considering the nesting season, the maternal transfer of lead (Pb) via egg-laying, in terms of metal burden in whole body, was 0.5%. Pb concentrations (in dry weight) in blood (0.95+/-0.18microgg(-1)) and egg samples (yolk, 0.80+/-0.10microg g(-1); albumen, 1.08+/-0.20microg g(-1); eggshell, 1.05+/-0.20microg g(-1)) were comparable or even lower than those found in other sea turtles. The isotope ratios ((206)Pb/(207)Pb and (206)Pb/(208)Pb) in blood (1.183+/-0.0006 and 2.452+/-0.0006, respectively) were comparable to that of natural Pb-bearing bedrock in Mexico (1.188+/-0.005 and 2.455+/-0.008, respectively). According to international norms of Pb, the health of this population and its habitats is acceptable for Pb and corresponds to basic levels of a nearly pristine environment.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Óvulo / Tartarugas / Poluentes Químicos da Água / Chumbo Limite: Animals Idioma: En Revista: Mar Pollut Bull Ano de publicação: 2010 Tipo de documento: Article País de afiliação: México País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Óvulo / Tartarugas / Poluentes Químicos da Água / Chumbo Limite: Animals Idioma: En Revista: Mar Pollut Bull Ano de publicação: 2010 Tipo de documento: Article País de afiliação: México País de publicação: Reino Unido