Acute toxicity and ecotoxicological risk of thiamethoxam insecticide in nile tilapia fingerlings

作者：Albinati A C L^*; Albinati R C B; Lira A D; Soares P C

来源：Arquivo Brasileiro de Medicina Veterinaria e Zootecnia, 2016, 68(5): 1343-1350.

DOI：10.1590/1678-4162-8676

• ecotoxicology
• fish
• Actara
• LC50

The neonicotinoid insecticide thiamethoxam is used in different cultures and classified as dangerous for the environment. The aim of this study was to evaluate the acute toxicity of thiamethoxam by determining the lethal concentration (LC50) and ecotoxicological risk through Estimated Environmental Concentration (EEC) and Risk Quotient (RQ) measurement. The assays were done with Tilapia fingerlings exposed to 150, 300, 450, 600 and 750mg/L Actara WG during 96 hours. Dissolved oxygen, pH and temperature were measured daily in all aquariums. Dissolved oxygen and pH varied in the experimental groups. The LC50 Actara (R); 96h was 322.08ppm. The risk quotient (RQ) ranged from low to high according to the methodology used.

• 出版日期2016-10