Abstract
Trace metals have been found in sea turtle blood and tissues and may represent a threat to these endangered species. Essential trace metal (Cu, Zn Cd, Pb, As, and Hg) concentrations were determined in blood of adult female, post-nesting olive ridley turtles Lepidochelys olivacea (n = 35) on Ceuta beach, Sinaloa, Mexico. Essential metals (Zn and Cu) analyzed were found in higher concentrations than toxic metals (Cd and Pb), while As and Hg concentrations were below the limits of detection (0.01 μg g-1). Low Pb concentrations (0.09 μg g-1) were previously observed in sea turtles in the Gulf of California. There were no significant correlations found between curved carapace length (61.00–71.00 ± 2.29) vs metal concentrations (p > 0.05). Cd levels were relatively high when compared to other species and populations of sea turtles worldwide and Cd may represent the greatest risk for sea turtles in the Mexican Pacific. Such concentrations of Cd may pose a further risk to sea turtles through bioaccumulation from the nesting female to offspring which may affect embryo development.
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Most data collected in this study is presented in the current manuscript. Raw data is also available upon request.
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We would like to thank the Department of Physicochemical Analysis, the Sinaloa State Public Health Laboratory, and Gaston Espinoza and Ramon Acedo for their technical support.
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Cesar Paul Ley-Quiñonez, Jorge Valdes-Flores, and Adrian Canizalez-Roman. The first draft of the manuscript was written by Vicente Olimon-Andalon and Cesar Paul Ley-Quiñonez, and all authors commented on the previous versions of the manuscript. All authors read and approved the final manuscript.
Conceptualization: Alfredo Alonso Aguirre, Cesar Paul Ley-Quiñonez, Jorge Valdes-Flores, and Adrian Canizalez-Roman
Methodology: Vicente Olimón-Andalón, Jorge Valdés-Flores, Hector Flores-Villaseñor, Erika Acosta-Smith, Marco Valdez-Flores and Igmar Sosa-Cornejo
Formal analysis and investigation: Nidia León-Sicairos, Catherine Edwina Hart and Alan Zavala-Norzagaray
Writing, original draft preparation: Vicente Olimón-Andalón, Jorge Valdés-Flores and Cesar Paul Ley-Quiñonez
Writing, review and editing: Alfredo Alonso Aguirre, Catherine Edwina Hart, Nidia Leon-Sicairos and Canizalez-Román
Supervision: Adrian Canizalez-Román
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Olimón-Andalón, V., Valdés-Flores, J., Ley-Quiñonez, C.P. et al. Essential and trace metals in a post-nesting olive ridley turtles (Lepidochelys olivacea) in Ceuta beach, Sinaloa, Mexico. Environ Sci Pollut Res 28, 29998–30006 (2021). https://doi.org/10.1007/s11356-021-12819-8
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DOI: https://doi.org/10.1007/s11356-021-12819-8