Efficacy of three insecticides on rat flea [Xenopsylla cheopis] infesting rodents in Giza Governorate, Egypt

ABSTRACT

The extensive use of insecticides in public health and agriculture sectors is the main reason for development of resistance in fleas associated in domestic rodents. The present work was planned to investigate the insecticidal efficacy of Lambda-cyhalothrin, Chlorpyrifos and Fenitrothion against rat flea [Xenopsylla cheopis] infesting rodent species in Giza Governorate, Egypt. The lethal concentration LC[50] and Lc[90] of population percent were obtained from the established regression log concentrate-response lines. Data indicated that the values of lethal concentration [LC[50]] were 0.293, 1.725 and 2.328% for Lambda-cyhalothrin, chlorpyrifos and Fenitrothion, respectively. The values of lethal concentration [Lc[90]] were 0.467, 2.839 and 5.197% for Lambda-cyhalothrin, chlorpyrifos and Fenitrothion, respectively