Organochlorine pesticides in green sea turtles (Chelonia mydas) with and without fibropapillomatosis caught at three feeding areas off Brazil

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Sanchez-Sarmiento, Angelica Maria ; Rossi, Silmara ; Vilca, Franz Zirena ; Thijl Vanstreels, Ralph Eric ; Monteiro, Sergio Henrique ; Vale, Luiz Americo S. ; dos Santos, Robson Guimaraes ; Marigo, Juliana ; Bertozzi, Carolina Pacheco ; Hildebrand Grisi Filho, Jose Henrique ; Tornisielo, Valdemar Luiz ; Matushima, Eliana Reiko

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Marine Biological Association of the United Kingdom; v. 97, n. 1, p. 215-223, FEB 2017.
• Citações Web of Science: 3

Resumo

Many factors threaten the survival of marine turtles, such as incidental capture by fisheries, habitat degradation, pollution and diseases. One of the most important diseases is fibropapillomatosis (FP), characterized by the development of benign skin tumours. FP predominantly affects juvenile green sea turtles (Chelonia mydas) and involves a complex multifactorial aetiology. For several years, it has been noted that the prevalence of FP tends to be higher in marine environments under the influence of human activities, leading to the hypothesis that environmental pollutants play a role in the epidemiology of this disease. Organochlorine compounds (OCs) are persistent organic pollutants with immunosuppressive and carcinogenic effects in humans and wildlife. OC levels (alpha-BHC, beta-BHC, alpha-endosulphan, beta-endosulphan, endosulphan sulphate, pp'-DDD, op'-DDD, pp'-DDE, op'-DDE, heptachlor, dicofol and mirex) were quantified through gas chromatography with a micro-electron capture detector (GC-mu ECD) in liver and fat samples from 64 juvenile green sea turtles. Specimens with and without FP were analysed, after being caught at three feeding areas off the Brazilian coast: Ubatuba, Praia Grande and Vitoria. OC levels were comparable to those observed in similar studies, and no consistent difference was observed between sea turtles with and without FP. This study helps to elucidate the contamination profile in sea turtles caught at feeding areas off Brazil and confirms that green sea turtles are exposed to OCs, which may play a negative role in the health of this species. (AU)

• Processo FAPESP: 11/04565-7 - Presença de contaminantes ambientais em tecidos de tartaruga-verde (Chelonia mydas) provenientes da Costa brasileira: estudo da prevalência em animais acometidos pela fibropapilomatose
• Beneficiário: Angélica María Sánchez Sarmiento
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 10/01781-8 - Avaliação da função celular de leucócitos por citometria de fluxo e a influência de bifenilos policlorados no desenvolvimento da fibropapilomatose em Chelonia mydas (Linnaeus, 1758) (Testudines, Cheloniidae).
• Beneficiário: Silmara Rossi
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/14319-6 - Ecologia e etiologia da fibropapilomatose em populações de Chelonia mydas (Testudines, Cheloniidae): estrutura das populações e papel de bifenilos policlorados e metais potencialmente tóxicos no desenvolvimento da doença
• Beneficiário: Eliana Reiko Matushima
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 09/53956-9 - Estudo da malária aviária em pinguins-de-Magalhães (Spheniscus magellanicus) mantidos em centros de reabilitação selecionados do litoral brasileiro
• Beneficiário: Ralph Eric Thijl Del Val Onoro Vanstreels
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto