Effects of the Microcystis aeruginosa Strain RST9501 from Patos Lagoon, RS, on Growth and Reproduction of the Cladocera Ceriodaphnia dubia

Authors

  • Nade Janara Coimbra Laboratório de Ecotoxicologia, Centro de Ecologia (CENECO), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
  • J. S. Yunes Unidade de Pesquisas em Cianobactérias, Universidade Federal do Rio Grande (FURG), Rio Grande, RS, Brazil
  • M. B. Bohrer-Morel Laboratório de Ecologia e Ecotoxicologia Aquática, Instituto de Pesquisas Energéticas e Nucleares (IPEN), Universidade de São Paulo (USP), São Paulo, SP, Brazil

DOI:

https://doi.org/10.5132/jbse.2006.01.020

Keywords:

Microcystis, microcystin, Ceriodaphnia, toxicity, Brazil

Abstract

This study evaluates the toxicity of the Microcystis aeruginosa strain RST9501, isolated from Patos Lagoon, to cladocerans using standard tests with Ceriodaphnia dubia. The strain RST9501 was compared with the non-toxic M. aeruginosa strain NPJT-01. Chronic effects were estimated by evaluating reproduction and growth in C. dubia exposed to increasing concentrations of M. aeruginosa. Alternative food source constituted by Pseudokirchneriella subcapitata and Artemia chow was made available for all treatments. The presence of the two strains of M. aeruginosa inhibited both reproduction and growth in C. dubia. Also, regardless the presence of microcystin, there was an increase in toxicity as the cell concentration of both strains increased.

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Published

20-06-2006

How to Cite

Coimbra, N. J., Yunes, J. S., & Bohrer-Morel, M. B. (2006). Effects of the Microcystis aeruginosa Strain RST9501 from Patos Lagoon, RS, on Growth and Reproduction of the Cladocera Ceriodaphnia dubia. Ecotoxicology and Environmental Contamination, 1(1), 93–96. https://doi.org/10.5132/jbse.2006.01.020

Issue

Vol. 1 No. 1 (2006)

Section

Original Articles

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Copyright (c) 2006 Ecotoxicology and Environmental Contamination

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