Use of Freshwater Planarians Dugesia (Girardia) tigrina Testing Toxicity of a Petroleum Refinery Wastewater

Authors

  • Gislaine Silva Barros Departamento de Bioquímica e Microbiologia, Instituto de Biociências, Universidade Estadual de São Paulo (UNESP), Rio Claro, SP, Brazil
  • D. F. Angelis Departamento de Bioquímica e Microbiologia, Instituto de Biociências, Universidade Estadual de São Paulo (UNESP), Rio Claro, SP, Brazil
  • L. T. Furlan Refinaria de Paulínia, PETROBRAS, Paulínia, SP, Brazil
  • B. Corrêa-Junior Refinaria de Paulínia, PETROBRAS, Paulínia, SP, Brazil

DOI:

https://doi.org/10.5132/jbse.2006.01.014

Keywords:

chronic toxicity, freshwater planarians, petroleum’s effluent, water, Dugesia (Girardia) tigrina

Abstract

The action of wastewater from Paulínia Petroleum Refinery (REPLAN) was tested in freshwater planarian regeneration, from the species Dugesia (Girardia) tigrina. This chronic toxicity test was realized to establish conditions to use them as a monitoring species of the refinery treatment efficiency. The tested samples wore collected at six points: rio Jaguari (REPLAN water intake); wastewater beginning biological treatment (after physical treatment); wastewater entering stabilization lagoon (last stage of treatment); discharge of stabilization lagoon; upstream from effluent discharge at rio Atibaia; downstream from the effluent discharge. Drinking water was used as control. Five or eight adult planarian at regeneration stage was tested in each point. The adult tested specimens were selected and weren’t feed during the experiment. The test was initiated immediately after the removal of planarian’s head (cut with blade) and finalized when the regeneration was complete. It was detected high toxic effect only at the sample from the primary treatment discharge, before realizing the aeration and biological treatment. We can conclude that REPLAN effluent, at the end of the treatment process don’t cause any effect in Dugesia (Girardia) tigrina cephalic regeneration.

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Published

20-06-2006

How to Cite

Barros, G. S., Angelis, D. F., Furlan, L. T., & Corrêa-Junior, B. (2006). Use of Freshwater Planarians Dugesia (Girardia) tigrina Testing Toxicity of a Petroleum Refinery Wastewater. Ecotoxicology and Environmental Contamination, 1(1), 67–70. https://doi.org/10.5132/jbse.2006.01.014

Issue

Vol. 1 No. 1 (2006)

Section

Original Articles

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Copyright (c) 2006 Ecotoxicology and Environmental Contamination

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