Laboratory Evaluation of Chlorpyrifos-Ethyl and Fipronil against Ancistrotermes cavithorax (Isoptera: Termitidae) in South Côte d’Ivoire

Ancistrotermes cavithorax, is an economically important species causing damage to wooden structures and agricultural crops in Côte d’Ivoire. Toxicities of two new chemical insecticides (Chlorpyrifos-ethyl and fipronil) were evaluated against this termite. The results showed that, Chlorpyrifos-ethyl was the highest toxicity than fipronil. The LT50 value of chlorpyrifos-ethyl at highest concentration (2000 ppm) was shorter (4±1.73 Mins.) than that of fipronil (97.3±1.32 Mins.). Chlorpyrifos-ethyl killed the termite workers faster than fipronil witch concentrations were slower than to kill the termites. The LD50 value of chlorpyrifos-ethyl was shorter (27.119) than that of fipronil (31.035). The study provides an opportunity to compare the toxicities of two new chemical insecticides and to use them effectively in the termite management programs.