Toxicity evaluation of the active ingredient acetamiprid and a commercial formulation (Assail® 70) on the non-target gastropod Biomphalaria straminea (Mollusca: Planorbidae)

COSSI, PAULA FANNY; HERBERT, LUCILA THOMSETT; YUSSEPPONE, MARÍA SOLEDAD; PÉREZ, ANALÍA FERNANDA; KRISTOFF, GISELA

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY

ACADEMIC PRESS INC ELSEVIER SCIENCE

Año: 2020 vol. 192

0147-6513

Neonicotinoids emerged as an environmentally safe alternative to previous generations of insecticides becomingone of the most widely applied in modern agriculture. Nevertheless, they have been reported to affect severalnon-target organisms. Most toxicity studies focus on the effects on pollinators or terrestrial invertebrates andevaluate either the active ingredient or the commercial formulation. In the present study, we aimed to assess thelong-term effects of the active ingredient acetamiprid and a broadly used commercial formulation (Assail® 70)on the non-target freshwater gastropod Biomphalaria straminea using a battery of biomarkers. A 14 day-exposureof adult organisms to both active ingredient and commercial formulation increased carboxylesterase activity andglutathione content, inhibited superoxide dismutase activity and decreased reactive oxygen species levels. Thecommercial formulation additionally increased glutathione S-transferase activity and inhibited catalase activity.The results indicate a greater toxicity of the commercial formulation than that of the active ingredient alone.Cholinesterase activity, development and offspring survival of B. straminea were not impaired. We conclude thatthe toxicity of acetamiprid on this gastropod species is mainly related to effects on detoxification and oxidativemetabolism responses. This study provides novel information about the adverse effects of the active ingredientand a commercial formulation of a widely used neonicotinoid on a non-target aquatic species.