Behavior Evaluation Of Microencapsulated Insecticide Against Tityus serrulatus (Scorpiones: Buthidae)

The species Tityus serrulatus is widely distributed in the country, in both urban and rural areas. The trial aimed to evaluate the occurrence of the repellent effect, the level of control and behavior of scorpions exposed to arena partially treated with Demand® 10CS (Lambda-cyhalothrin 10%). For each of the five repetitions, an arena (45x45cm) was set up with 4 pieces of 20x20cm unglazed tiles - two of them were treated with Demand and two weren’t treated. They were diagonally disposed inside the arena, with a shelter in their center. The product was sprayed following label recommendation (75mL/10Lwater/200m²). After two hours of the application, 5 scorpions were placed in the central region of the arena, containing 9 smaller pieces of untreated tiles placed in the middle of the arena. The observations were conducted up to 48h after confinement. Mortality was observed after the first hour, reaching 100% of control in 24h. At 24h, 12 scorpions were present in the treated area and 13 were in the not treated area, with no significant difference seen. In the control group, no mortality was observed.