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Environ Toxicol Pharmacol. 2012 Nov;34(3):969-76. doi: 10.1016/j.etap.2012.07.010. Epub 2012 Jul 31.

Assessment of trophic transfer of benzo(a)pyrene genotoxicity from the post-larval pink shrimp F. brasiliensis to the juvenile Florida pompano T. carolinus.

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  • 1Laboratory of Marine Life Ecophysiology, Department of Oceanographic Biology, Institute of Oceanography, Universidade de São Paulo, Praça do Oceanográfico, 191 Cidade Universitária, São Paulo, SP, CEP 05508-900, Brazil. arrocha@usp.br

Abstract

In the present study, the polycyclic aromatic hydrocarbon (PAH) genotoxicity was investigated in a one-step predator-prey relationship with the trophic-related marine species. Florida pompanos were fed for 5 and 10 days with pink shrimp post larvae previously exposed to benzo(a)pyrene (BaP) concentrations. Parent BaP body burden was measured in samples of Farfantepenaeus brasiliensis. BaP metabolites were determined in bile samples of Trachinotus carolinus and DNA damage was assessed through the comet and erythrocyte nuclear abnormalities (ENAs) assays in fish erythrocytes. BaP body burden increased significantly with the PAH concentration in pink shrimp PLs as well as the fish bile BaP metabolites. Both, comet and ENAs assays indicated significant increase on erythrocyte DNA damage of Florida pompanos fed with BaP-exposed pink shrimp on both feeding periods. The trophic route of BaP genotoxicity is discussed as well as the PAH biotransformation as the inducing mechanism for the DNA damages observed.

Copyright © 2012 Elsevier B.V. All rights reserved.

PMID:
22974793
[PubMed - indexed for MEDLINE]
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