Skip to Main content Skip to Navigation
Journal articles

Oxidative stress induced by glyphosate-based herbicide on freshwater turtles

Abstract : Freshwater ecosystems face very strong anthropogenic pressures, among which overexploitation, habitat degradation, flow modification, species invasion, and water pollution lead to growing threats on biodiversity. Urbanization through wastewater treatment, industry through the release of inorganic and organic chemicals, and agriculture through the use of pesticides and herbicides are the main factors involved in water pollution. In France, more precisely in the Pyrenees-Orientales department, the poor quality of the watercourses is attributable overall to the use of glyphosate-based herbicides in agricultural activities. Because these chemicals can impact individuals, populations, and biodiversity, we investigated, under experimental conditions, the physiological response of animals facing abiotic contaminants. We selected as a model, juveniles of the freshwater turtle Trachemys scripta elegans. We measured the gene expression and activity of the catalase and superoxide dismutase enzymes as well as the levels of lipid peroxidation, which are all oxidative stress biomarkers, in turtles challenged with high concentrations of glyphosate-based herbicides, on the one hand, and with degraded waters collected from a local watercourse, on the other. We also measured the acetylcholinesterase activity across the same animals. We showed through variations in gene expression and enzyme activity that a glyphosate commercial formulation induced a stress in turtles. A similar outcome was obtained when turtles faced degraded waters. The results indicated that the poor quality of regional waters could be a real threat for animal health. Because turtles are globally less sensitive to contaminants than amphibians, which are lacking in the degraded waters of the Pyrenees-Orientales department, they could constitute an excellent model to follow the evolution of water quality through the study of oxidative stress biomarkers.
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-01808555
Contributor : Anne Modat <>
Submitted on : Wednesday, February 3, 2021 - 10:58:18 AM
Last modification on : Thursday, September 16, 2021 - 3:46:21 AM
Long-term archiving on: : Tuesday, May 4, 2021 - 6:35:49 PM

File

Heritier-2017-EnvToxicol-Oxida...
Files produced by the author(s)

Identifiers

Citation

Laurent Héritier, David Duval, Richard Galinier, Anne-Leila Meistertzheim, Olivier Verneau. Oxidative stress induced by glyphosate-based herbicide on freshwater turtles. Environmental Toxicology and Chemistry, Wiley, 2017, 36 (12), pp.3343 - 3350. ⟨10.1002/etc.3916⟩. ⟨hal-01808555⟩

Share

Metrics

Record views

232

Files downloads

73