Mercury in the sea turtle Chelonia mydas (Linnaeus, 1958) from Ceará coast, NE Brazil

Anais da Academia Brasileira de Ciências

Moisés F. Bezerra²  Luiz D. Lacerda²  Breno G.b. Costa²  Eduardo H.s.m. Lima¹ 

[1] ,Universidade Federal do Ceará Instituto de Ciências do Mar Laboratório de Biogeoquímica CosteiraFortaleza CE ,Brasil

关键词: Pollution;    metals;    marine turtles;    monitoring;    Poluição;    metais;    tartarugas marinhas;    monitoramento;   

DOI  :  10.1590/S0001-37652012000100012

来源: SciELO

【 摘 要 】

Mercury concentrations in carapace fragments of the green turtle Chelonia mydas from the Ceará coast in NE Brazil are reported. Concentrations varied from <0.34 to 856.6 ng.g -1 d.w., and were highest (average of 154.8 ng.g -1 d.w.) in juveniles (n = 22), whereas lowest concentrations (average of 2.5 ng.g -1 d.w.) were observed in adult/sub-adult animals (n = 3). There was a significant negative correlation between animal size and Hg concentration probably due to different diets between juveniles and sub-adults/adults. Carapace fragments, which are non-invasive, non-lethal substrates, may be of importance for monitoring purposes of these generally endangered species.

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