Acute Toxicity (CL50) and behavioral and morphological effects of a commercial formulation with glyphosate active ingredient in tadpoles of Physalaemus cuvieri (Anura, Leptodactylidae) and Rhinella icterica (Anura, Bufonidae)

ABSTRACT

The decline of amphibians in the world is increasing and the loss of wealth is often associated with agricultural areas. The use of pesticides, especially those based on glyphosate is increasing and new formulations are being developed. This study evaluated the acute toxicity of a commercial compound with glyphosate and behavioral and morphological effects on Physalaemus cuvieri and Rhinella icterica tadpoles; the former was more sensitive to the commercially formulated compound than R. icterica and there were no significant differences in relation to behavioral changes and increase compound concentrations among species, but there were morphological changes of weight and length of tadpoles of both species.

Keywords:
glyphosate; acute toxicity; Physalaemus cuvieri; Rhinella icterica; behavior; malformations