Lethal concentration of glyphosate for juveniles of Curimatã - Pacu

Authors

  • Emília Tatiane Lopes da SILVA Universidade Federal dos Vales do Jequitinhonha e Mucuri - Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)
  • Maria Letícia Fernandes DIAS Universidade Federal dos Vales do Jequitinhonha e Mucuri - Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)
  • Marcelo Mattos PEDREIRA Universidade Federal dos Vales do Jequitinhonha e Mucuri - Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)
  • José Barbosa dos SANTOS Universidade Federal dos Vales do Jequitinhonha e Mucuri - Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)

DOI:

https://doi.org/10.20950/1678-2305.2016v42n4p759

Keywords:

Fish, Athanor, CL50, herbicide, toxicology

Abstract

This study aimed to determine the lethal concentration of glyphosate (CL50) for juveniles of curimatã-pacu, Prochilodus argenteus. The experiment was conducted in CODEVASF- Três Marias, MG, Brazil, during 96 h, using 240 juvenile fish (standard length 6.4 ± 8.47 cm and weight 8.98 ± 3.91 g), distributed in six herbicide concentrations: 0, 5, 10, 15, 20 and 40 mg.L-1 in a completely randomized design with four replications. Each 24 h was observed the animal´s behavior and the mortality rate, and 48, 72 and 96 h CL50 was estimated. The CL50 of glyphosate at 48, 72 and 96 h were 20.88, 19.91 and 19.09 mg.L-1, respectively. The herbicide provoked lethargic swimming of the fish.

Downloads

Published

2016-12-30

Issue

Vol. 42 No. 4 (2016): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article

Most read articles by the same author(s)