Acute sensitivity to Nitokra sp benthic copepod to potassium dichromate and ammonia chloride

Autores

  • E. Sousa
  • L. Zaroni
  • T. Bergmann Filho
  • L. Marconato
  • A. KirschBaum
  • M. Gasparro

Resumo

The present study assesses acute toxicity of non-ionized ammonia and potassium dichromate using the estuarine benthic copepod Nitokra sp from laboratory cultures. Bioassays with non-ionized ammonia sensitivity were carried out, and the mean. Bioassays with non-ionized ammonia sensitivity were carried out, and the mean of LC(I)50-96h was 1.7 mg.L-1. – LC(I)50-96h was 1.7 mg.L-1. Potassium dichromate was used as reference substance in two distinct periods of exposure and the mean LC(I)50-48h and LC(I)50-96h values were 55.61 mg.L-1and 21.70 mg.L-1, respectively. The organism showed sensitivity to the toxic agents used and good reproducibility of results, indispensable factors for use in ecotoxicological assays.

Keywords: bioassay, acute sensitivity test, potassium dichromate, ammonium chlorinate, estuarine copepod

 

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Sousa, E., Zaroni, L., Bergmann Filho, T., Marconato, L., KirschBaum, A., & Gasparro, M. (2012). Acute sensitivity to Nitokra sp benthic copepod to potassium dichromate and ammonia chloride. Ecotoxicology and Environmental Contamination, 7(1). Recuperado de https://periodicos.univali.br/index.php/eec/article/view/3711

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