Efficacy of three synthetic pyrethroids against three mosquito species in Arkansas and Louisiana
Groves, R.L.; Dame, D.A.; Meek, C.L.; Meisch, M.V.
Journal of the American Mosquito Control Association 13(2): 184-188
1997
ISSN/ISBN: 8756-971X PMID: 9249658 Document Number: 474362
Adult mortality of Anopheles quadrimaculatus, Culex quinquefasciatus, and Aedes sollicitans and Aedes sollicitans was observed following ultra-low-volume (ULV) exposure to Responde, Permanone 31-66 RTU, and Scourge. Permanone 31-66 RTU (1:2.13, permethrin:PBO) and Scourge (1:3, resmethrin:PBO) were applied at 0.00175 lb AI/acre, while Responde (1:3, prallethrin:PBO) was applied at 0.001 lb AI/acre, and all were evaluated at 100, 200, and 300 ft. downwind of application. Significant mortality differences (P ltoreq 0.05) were observed among all compounds at 15 min and at 1, 12, and 24 h posttreatment against An. quadrimaculatus and Cx. quinquefasciatus. Responde exhibited significantly greater (P ltoreq 0.05) control (knockdown) against An. quadrimaculatus at both 15 min and 1 h posttreatment than did Permanone 31-66 RTU or Scourge: however, some recovery occurred by 12 h posttreatment. At 15 min posttreatment, Responde and Scourge were significantly (P ltoreq 0.05) more effective against Cx. quinquefasciatus than Permanone 31-66 RTU except at 300 ft. downwind. where Scourge was significantly (P ltoreq 0.05) more effective than either compound. No significant mortality differences (P ltoreq 0.05) were observed among the 3 compounds at 15 min, 1 h, 12 h, and 24 h posttreatment when tested against Ae. sollicitans. No significant mortality differences (P ltoreq 0.05) were observed between the 1:3 and 1:5 (prallethrin: piperonyl butoxide) formulations of Responde at any time posttreatment when tested against Ae. sollicitans.