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

Published online by Cambridge University Press:  12 February 2016

Angélica María Sánchez-Sarmiento ,
Silmara Rossi ,
Franz Zirena Vilca ,
Ralph Eric Thijl Vanstreels ,
Sergio Henrique Monteiro ,
Luiz Américo S. Vale ,
Robson Guimarães Dos Santos ,
Juliana Marigo Open the ORCID record for Juliana Marigo [Opens in a new window] ,
Carolina Pacheco Bertozzi  and
José Henrique Hildebrand Grisi Filho
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Angélica María Sánchez-Sarmiento*
Affiliation:
Laboratório de Patologia Comparada de Animais Selvagens (LAPCOM), Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil
Silmara Rossi
Affiliation:
Escola Superior de Agricultura Luiz de Queiroz e Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
Franz Zirena Vilca
Affiliation:
Laboratório de Ecotoxicologia, Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
Ralph Eric Thijl Vanstreels
Affiliation:
Laboratório de Patologia Comparada de Animais Selvagens (LAPCOM), Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil
Sergio Henrique Monteiro
Affiliation:
Centro P & D de Proteção Ambiental, Instituto Biológico, São Paulo, Brazil
Luiz Américo S. Vale
Affiliation:
Grupo de Pesquisa em Química Verde e Ambiental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
Robson Guimarães Dos Santos
Affiliation:
Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
Juliana Marigo
Affiliation:
Laboratório de Patologia Comparada de Animais Selvagens (LAPCOM), Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil
Carolina Pacheco Bertozzi
Affiliation:
Projeto Biopesca, Praia Grande, SP, Brazil
José Henrique Hildebrand Grisi Filho
Affiliation:
Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil
Valdemar Luiz Tornisielo
Affiliation:
Laboratório de Ecotoxicologia, Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
Eliana Reiko Matushima
Affiliation:
Laboratório de Patologia Comparada de Animais Selvagens (LAPCOM), Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil
*
Correspondence should be addressed to:A.M. Sánchez-Sarmiento, Laboratório de Patologia Comparada de Animais Selvagens (LAPCOM), Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva 87, São Paulo, SP 05508-270, Brazil email: ang.san.sar@gmail.com
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Abstract

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 (α-BHC, β-BHC, α-endosulphan, β-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-μECD) 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 Vitória. 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.

Keywords

ecotoxicologypersistent organic pollutants (POPs)pollutionsea turtlesSouth-east Braziltumourstoxicity
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 97 , Issue 1 , February 2017 , pp. 215 - 223
Copyright
Copyright © Marine Biological Association of the United Kingdom 2016 

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