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Hematological and biochemical alterations in the fish Prochilodus lineatus caused by the herbicide clomazone.
- Source :
-
Environmental toxicology and pharmacology [Environ Toxicol Pharmacol] 2013 Jul; Vol. 36 (1), pp. 1-8. Date of Electronic Publication: 2013 Mar 07. - Publication Year :
- 2013
-
Abstract
- The indiscriminate use of herbicides has led to the contamination of water bodies, possibly affecting the health of aquatic biota. Therefore, to evaluate the possible effects of the clomazone-based herbicide (Gamit(®) 500) on the fish Prochilodus lineatus, juveniles were exposed for 96h to three concentrations (1, 5 and 10mgL(-1)) of clomazone, and an analysis was made of their hematological parameters: hemoglobin (Hb); hematocrit (Hct); red blood cell (RBC) count; mean corpuscular volume (MCV); mean corpuscular hemoglobin (MCH); mean corpuscular hemoglobin concentration (MCHC) and biochemical parameters: glutathione S-transferase (GST); catalase (CAT); glutathione peroxidase (GPx) and acetylcholinesterase (AChE). Hct presented a significant decrease at the concentration of 10mgL(-1), while the parameters Hb, HCM and MCHC presented a significant decrease at the two higher concentrations, indicating an anemic condition. The RBC increased significantly at the lowest concentration, possibly due to the release of new red blood cells into the bloodstream in response to splenic contraction, which may occur as an adaptive response to the stressor agent. P. lineatus presented activation of the biotransformation pathway, indicated by augmented hepatic activity of the enzyme GST and hepatic activation of the antioxidant enzyme CAT at the higher concentrations. Liver GPx was significantly inhibited at the higher concentrations, which may indicate the efficient action of CAT in the elimination of H2O2 or its competition with GST for the same substrate (GSH). AChE activity in brain and muscle was inhibited at the higher concentrations, indicating the neurotoxic effects of the herbicide in the fish. The hematological and biochemical alterations led to the conclusion that the herbicide clomazone has toxic effects on the species P. lineatus, and that its presence in the environment may jeopardize the health of these animals.<br /> (Copyright © 2013 Elsevier B.V. All rights reserved.)
- Subjects :
- Acetylcholinesterase metabolism
Animals
Brain drug effects
Brain enzymology
Catalase metabolism
Erythrocyte Indices drug effects
Glutathione Peroxidase metabolism
Glutathione Transferase metabolism
Hematocrit
Hemoglobins analysis
Liver drug effects
Liver enzymology
Characiformes metabolism
Herbicides toxicity
Isoxazoles toxicity
Oxazolidinones toxicity
Subjects
Details
- Language :
- English
- ISSN :
- 1872-7077
- Volume :
- 36
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Environmental toxicology and pharmacology
- Publication Type :
- Academic Journal
- Accession number :
- 23538322
- Full Text :
- https://doi.org/10.1016/j.etap.2013.02.019