Journal of
Environmental Chemistry and Ecotoxicology

  • Abbreviation: J. Environ. Chem. Ecotoxicol.
  • Language: English
  • ISSN: 2141-226X
  • DOI: 10.5897/JECE
  • Start Year: 2009
  • Published Articles: 189

Full Length Research Paper

Sensitivity, ecotoxicity and histopathological effects on neotropical fish exposed to glyphosate alone and associated to surfactant

Claudinei da Cruz
  • Claudinei da Cruz
  • University Center of Barretos Educational Fundation. Av. Prof. Roberto Frade Monte no 389, 14.783-226, Barretos (SP), Brazil.
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Natália Sayuri Shiogiri
  • Natália Sayuri Shiogiri
  • Weed Science Environmental Research Studies of the College of Agricultural and Veterinary Science at Unesp, Via de Acesso Prof. Dr. Paulo Donato Castellane, Zona Rural, s/ no, Jaboticabal, SP, Brazil
  • Google Scholar
Adilson Ferreira da Silva
  • Adilson Ferreira da Silva
  • Weed Science Environmental Research Studies of the College of Agricultural and Veterinary Science at Unesp, Via de Acesso Prof. Dr. Paulo Donato Castellane, Zona Rural, s/ no, Jaboticabal, SP, Brazil
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Robinson Antonio Pitelli
  • Robinson Antonio Pitelli
  • Weed Science Environmental Research Studies of the College of Agricultural and Veterinary Science at Unesp, Via de Acesso Prof. Dr. Paulo Donato Castellane, Zona Rural, s/ no, Jaboticabal, SP, Brazil
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Marcia Rita Fernandes Machado
  • Marcia Rita Fernandes Machado
  • Department of Morphology and Animal Physiology of the College of Agricultural and Veterinary Sciences at Unesp from Jaboticabal, SP, Brazil
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Silvia Patrícia Carraschi
  • Silvia Patrícia Carraschi
  • Weed Science Environmental Research Studies of the College of Agricultural and Veterinary Science at Unesp, Via de Acesso Prof. Dr. Paulo Donato Castellane, Zona Rural, s/ no, Jaboticabal, SP, Brazil.
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  •  Received: 13 August 2015
  •  Accepted: 22 December 2015
  •  Published: 31 March 2016

Abstract

The aim of this research was to evaluate neotropical fish sensitivity (Piaractus mesopotamicus, Phallocerus caudimaculatus, Hyphessobrycon eques, and Brachydanio rerio) to a reference substance (potassium chloride); to estimate the lethal concentration (LC50; 96 h) for glyphosate, formulated as Rodeo® alone and in association with 0.5 and 1.0% Aterbane® BR surfactant and to evaluate the histopathology of the gills, liver, and kidney from the fish after acute exposure. P. caudimaculatus and H. eques are good bioindicators like B. rerio because they have similar sensitivity. The LC50;96 h for glyphosate alone and in association with 0.5% Aterbane® BR was similar (>975.0 mg L-1) for all the fish. Aterbane® BR alone was the most toxic substance to P. caudimaculatus (5.81 mg L-1 LC50;96 h) and glyphosate associated to 1.0% Aterbane® BR was more toxic to H. eques (411.91 mg L-1 LC50;96 h). The glyphosate alone and in association with Aterbane® BR was classified as practically non-toxic, whereas Aterbane® BR alone was considered moderately toxic for the tested organisms. The histopathological effects caused by glyphosate exposure on gills, liver, and kidneys are reversible, except for the liver necrosis on P. caudimaculatus. H. eques, P. caudimaculatus, and P. mesopotamicus present great potential to be used as standard organisms for herbicides monitoring and the use of glyphosate without surfactant addition is enough to cause histological alterations on H. eques and P. caudimaculatus, which makes them possible to be applied on environmental monitoring studies as biomarkers.

 

Key words: Bioindicator, pesticide, histology, biomarker, gill, herbicide.