Water Toxicity Assessment of the Ceará River Estuary (Brazil)

Authors

  • Jeamylle Nilin Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará (UFC), Fortaleza, CE, Brazil
  • C. B. de Castro Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará (UFC), Fortaleza, CE, Brazil
  • M. F. Pimentel Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará (UFC), Fortaleza, CE, Brazil
  • W. Franklin Júnior Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará (UFC), Fortaleza, CE, Brazil
  • R. F. G. de Matos Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará (UFC), Fortaleza, CE, Brazil
  • T. M. C. Lotufo Laboratório de Ecologia Animal, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará (UFC), Fortaleza, CE, Brazil
  • L. V. Costa-Lotufo Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará (UFC), Fortaleza, CE, Brazil

DOI:

https://doi.org/10.5132/jbse.2007.02.003

Keywords:

Lytechinus variegatus, toxicity test, Ceará River, water quality

Abstract

The Ceará River Basin is one of the three major water sources of the Metropolitan Region of Fortaleza, Ceará State, Brazil. As an urban river, it receives domestic and industrial effluents, but the impacts of such discharges were not properly investigated. This research focused on the evaluation of the quality of the Ceará river estuary using the sea urchin Lytechinus variegatus embryo-larval toxicity test. Four sampling stations were distributed along the estuary, and the water samples were collected monthly from March 2004 through February 2005. The physical-chemical analyses showed a gradient of salinity and pH from the inner part of the estuary towards the river mouth, while dissolved oxygen (DO) and temperature values were very similar among the stations. Toxicity occurred in three of four surveyed stations, especially at S1 and S2, where the effects were more evident. The higher toxicity at these stations may be related to the proximity to the confluence between Ceará River and Maranguapinho River, which carries effluents from Maracanaú’s Industrial District.

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Published

10-07-2007

How to Cite

Nilin, J., Castro, C. B. de, Pimentel, M. F., Franklin Júnior, W., Matos, R. F. G. de, Lotufo, T. M. C., & Costa-Lotufo, L. V. (2007). Water Toxicity Assessment of the Ceará River Estuary (Brazil). Ecotoxicology and Environmental Contamination, 2(2), 107–113. https://doi.org/10.5132/jbse.2007.02.003

Issue

Vol. 2 No. 2 (2007)

Section

Original Articles

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Copyright (c) 2007 Ecotoxicology and Environmental Contamination

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