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Mar Environ Res. 2014 May;96:118-26. doi: 10.1016/j.marenvres.2013.11.002. Epub 2013 Nov 22.

Ecological relevance of Sentinels' biomarker responses: a multi-level approach.

Author information

  • 1Departamento de Ciências do Mar, Universidade Federal de São Paulo, Av. Almirante Saldanha da Gama 89, 11030-490 Santos, SP, Brazil; Departamento de Ecotoxicologia, Universidade Santa Cecília, Av. Oswaldo Cruz 266, 11045-907 Santos, SP, Brazil. Electronic address: camilo.seabra@unifesp.br.
  • 2NEPEA, Campus do Litoral Paulista, Universidade Estadual Paulista Júlio de Mesquita Filho, Praça Infante Dom Henrique, s/n, 11330-900 Saão Vicente, SP, Brazil.
  • 3Departamento de Ciências do Mar, Universidade Federal de São Paulo, Av. Almirante Saldanha da Gama 89, 11030-490 Santos, SP, Brazil.
  • 4Universidad de Cádiz, Polígono Río San Pedro s/n, 11510 Puerto Real, Cádiz, Spain.
  • 5Departamento de Ciências do Mar, Universidade Federal de São Paulo, Av. Almirante Saldanha da Gama 89, 11030-490 Santos, SP, Brazil; Departamento de Ecotoxicologia, Universidade Santa Cecília, Av. Oswaldo Cruz 266, 11045-907 Santos, SP, Brazil.
  • 6NEPEA, Campus do Litoral Paulista, Universidade Estadual Paulista Júlio de Mesquita Filho, Praça Infante Dom Henrique, s/n, 11330-900 Saão Vicente, SP, Brazil; Laboratório de Toxicologia Celular, Departamento de Biologia Celular, Universidade Federal do Paraná, CP19031, 81531-990 Curitiba, PR, Brazil.
  • 7Departamento de Ecotoxicologia, Universidade Santa Cecília, Av. Oswaldo Cruz 266, 11045-907 Santos, SP, Brazil.
  • 8Laboratório de Biogeoquímica Ambiental, Departamento de Química, UFSCar, Rod. Washington Luiz, 13565-905 São Carlos, SP, Brazil.
  • 9Instituto Oceanográfico da Universidade de São Paulo, Praça do Oceanográfico, 191, 05508-900 São Paulo, SP, Brazil.
  • 10Departamento de Bioquímica, CCB, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil.

Abstract

In response to the need for more sensitive and rapid indicators of environmental quality, sublethal effects on the lowest levels of biological organization have been investigated. The ecological relevance of these responses assumes a prevailing role to assure effectiveness as indicator of ecological status. This study aimed to investigate the linkages between biomarker responses of caged bivalves and descriptive parameters of macrobenthic community structure. For this purpose a multi-level environmental assessment of marine and estuarine zones was performed in São Paulo coast, Brazil. Multivariate analysis was applied to identify linkages between biological responses and ecological indices, as well as to characterizing the studied stations. Individuals of the marine mussel Perna perna caged along Santos Bay showed signs of oxidative stress, lysosomal membrane destabilization, histological alterations and reduced embryonic development. The estuarine oyster Crassostrea rhizophorae caged along Santos Port Channel showed alterations on biotransformation enzymes and antioxidant system, DNA damage and lysosomal membrane destabilization. The benthic community analysis showed reduced richness and diversity in the same areas of the Santos bay and estuary where biomarker responses were altered. Our results revealed that xenobiotics are inducing physiological stress, which may lead to changes of the benthic community structure and deterioration of the ecological status over time. Integrating biomarker responses and ecological indexes improved certainty that alterations found at community level could be related to xenobiotic as stressors, which was very useful to improve the discriminatory power of the environmental assessment.

Copyright © 2013 Elsevier Ltd. All rights reserved.

KEYWORDS:

Biomarkers; Caged bivalves; Ecological status; Macrobenthic community

PMID:
24314371
[PubMed - indexed for MEDLINE]
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