Bivalve molluscs prospection in pollution study from Cachoeira and Santana rivers in Ilheus, Bahia, Brazil

  • Denise Sande Universidade Estadual de Santa Cruz, Ilhéus, BA
  • Tauá A. Melo Universidade Estadual de Santa Cruz, Laboratório de Microbiologia, Ilhéus, BA
  • Gílvia Simone Andrade Oliveira Universidade Estadual de Santa Cruz, Ilhéus, BA
  • Lidiane Barreto Universidade Estadual de Santa Cruz, Laboratório de Microbiologia, Ilhéus, BA
  • Teddy Talbot Universidade Estadual de Santa Cruz, Laboratório de Microbiologia, Ilhéus, BA
  • Guisla Boehs Universidade Estadual de Santa Cruz, Departamento de Ciências Biológicas, Ilhéus, BA
  • João Luciano Andrioli Universidade Estadual de Santa Cruz, Departamento de Ciências Biológicas, Ilhéus, BA
Keywords: Quality of water, Bivalve molluscs, Pollution, Thermtolerant coliforms, Pathogenic enterobacteria

Abstract

A survey about the pollution level of the Cachoeira and Santana Rivers (Ilheus, Bahia, Brazil) was performed for a quarter, through the assessment of the microbiological quality of water and seafood (Crassostrea rhizophorae - oyster and Tagelus plebeius - razor clam) extracted from these rivers. Traditional indicators of pollution such as total coliforms (Ct) and thermtolerant coliforms (CT), and total count of micro-organisms, with isolation and identification of Enterobacteriaceae were determined in rivers samples, which exhibited different levels of faecal pollution. An amount of 68 micro-organisms was isolated, distributed in ten species, among them, Salmonella typhi, Escherichia coli and Shigella sp., warning about the risk of consuming these shellfish in nature, even when there is accordance with the laws established for CT. The bivalve prospection to monitor pollution levels was not effective considering CT detection in oysters and moapens. There was also the highest contamination degree in the Cachoeira River, which is used for water distribution in the region and as livelihood source through extractive activities for the riverside population.

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Published
2010-06-01
How to Cite
Sande, D., Melo, T., Oliveira, G., Barreto, L., Talbot, T., Boehs, G., & Andrioli, J. (2010). Bivalve molluscs prospection in pollution study from Cachoeira and Santana rivers in Ilheus, Bahia, Brazil. Brazilian Journal of Veterinary Research and Animal Science, 47(3), 190-196. https://doi.org/10.11606/issn.1678-4456.bjvras.2010.26854
Section
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