Journal
MARINE POLLUTION BULLETIN
Volume 62, Issue 9, Pages 1979-1983Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2011.06.022
Keywords
Baja California Sur; Cadmium; Caretta caretta; Heavy metals; Loggerhead turtle; Mexico; Selenium; Zinc
Funding
- CIIDIR-SIN
- IPN GRUPO TORTUGUERO
- SIP-IPN [20090831]
- EcoHealth Alliance (formerly known as Wildlife Trust)
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Environmental pollution due to heavy metals is having an increased impact on marine wildlife accentuated by anthropogenic changes in the planet including overfishing, agricultural runoff and marine emerging infectious diseases. Sea turtles are considered sentinels of ecological health in marine ecosystems. The objective of this study was to determine baseline concentrations of zinc, cadmium, copper, nickel, selenium, manganese, mercury and lead in blood of 22 clinically healthy, loggerhead turtles (Caretta caretta), captured for several reasons in Puerto Lopez Mateos, Baja California Sur, Mexico. Zinc was the most prevalent metal in blood (41.89 mu g g(-1)), followed by Selenium (10.92 mu g g(-1)). The mean concentration of toxic metal Cadmium was 6.12 mu g g(-1) and 1.01 mu g g(-1) respectively. Mean concentrations of metals followed this pattern: Zn > Se > Ni > Cu > Mn > Cd > Pb and Hg. We can conclude that blood is an excellent tissue to measure in relatively non-invasive way baseline values of heavy metals in Caretta caretta. (C) 2011 Elsevier Ltd. All rights reserved.
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