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

DOI: 10.1590/S0001-37652012000100012

Keywords: pollution, metals, marine turtles, monitoring.

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Abstract:

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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