title: Levels of perfluorinated acids (PFCAs) in different tissues of Lepidochelys olivacea sea turtles from the Escobilla beach (Oaxaca, Mexico).
abstract: Lepidochelys olivacea is the most abundant and globally distributed sea turtle species in the world and thus, monitoring this species for persistent organic pollutants, such as perfluorinated chemicals, is fundamental for their protection. This study was the first to evaluate the occurrence of five PFCAs (PFOA, PFNA, PFDA, PFUnA, PFDoA) in liver and blood samples of Olive Ridley turtle population from the Escobilla beach (Oaxaca, Mexico). PFDA and PFUnA were the predominant PFCs in blood samples (detected in 93% and 84% of samples, respectively) and were also present in the highest concentrations. Liver samples showed higher PFCA concentrations than whole blood samples, with PFNA and PFDA the most abundant PFCs congeners in liver samples, detected in 65% and 47% of the samples, respectively. The measured levels of contaminants in the blood samples of Lepidochelys olivacea sea turtles were compared to the levels reported in the literature for other turtle species. While linear significant correlations between PFNA, PFDA and PFUnA concentrations in blood samples and curved carapace lengths were determined, no correlation was found for PFOA, supporting the hypothesis that sea turtles could have a higher ability to eliminate this perfluorinated chemical from their blood than other PFCAs. However, we do not know if the concentrations are species or sampling areas dependent.
authors: University of Siena, Department of Physical Sciences, Earth and Environment, Via Mattioli, 4, 53100 Siena, Italy.
authors: Eugenia
authors: E
authors: Pasanisi
authors: Toxicology Unit, Faculty of Veterinary Medicine, University of Murcia, 30100 Murcia, Spain.
authors: Adriana A
authors: AA
authors: Cortés-Gómez
authors: Toxicology Unit, Faculty of Veterinary Medicine (UEX), 10003 Caceres, Spain. Electronic address: marcospl@unex.es.
authors: Marcos
authors: M
authors: Pérez-López
authors: Toxicology Unit, Faculty of Veterinary Medicine (UEX), 10003 Caceres, Spain.
authors: Francisco
authors: F
authors: Soler
authors: Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Department of Environment, Madrid, Spain.
authors: David
authors: D
authors: Hernández-Moreno
authors: Bioscience Research Center, Via Aurelia Vecchia 32, 58015 Orbetello, Grosseto, Italy.
authors: Cristiana
authors: C
authors: Guerranti
authors: Department of Chemistry "Ugo Schiff", via della Lastruccia, 3, 50100 Sesto Fiorentino, Florence, Italy.
authors: Tania
authors: T
authors: Martellini
authors: Universidad Autónoma Benito Juárez de Oaxaca, 68120 Oaxaca, Mexico.
authors: Gisela
authors: G
authors: Fuentes-Mascorro
authors: Toxicology Unit, Faculty of Veterinary Medicine, University of Murcia, 30100 Murcia, Spain. Electronic address: diegorom@um.es.
authors: Diego
authors: D
authors: Romero
authors: Department of Chemistry "Ugo Schiff", via della Lastruccia, 3, 50100 Sesto Fiorentino, Florence, Italy; Istituto per la Dinamica dei Processi Ambientali (CNR-IDPA), Venezia, Italy. Electronic address: acincinelli@unifi.it.
authors: Alessandra
authors: A
authors: Cincinelli
mesh_terms: D000818:Animals; D004781:Environmental Exposure; D004784:Environmental Monitoring; D005260:Female; D005466:Fluorocarbons / Q000097:blood / Q000378:metabolism*; D008099:Liver / Q000737:chemistry; D008800:Mexico; D014426:Turtles / Q000097:blood / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000097:blood / Q000378:metabolism*
chemical_list: D005466:Fluorocarbons; D014874:Water Pollutants, Chemical
keywords: Lepidochelys olivacea; Mexico; PFCAs; PFOA; sea turtle