title: Insecticidal and repellent activities of insecticide-sucrose solutions to Culex pipiens molestus (Diptera: Culicidae) under laboratory and field conditions.
abstract: BACKGROUND
  Culex pipiens molestus Forskal has been reported as a dominant species in underground structures of urban areas in the Republic of Korea (ROK) during all seasons and becomes bothersome to humans in late autumn and winter. Most Cx. pipiens molestus in septic tanks are controlled in the ROK using larvicides such as Bt and IGR. However, there are a number of problems associated with larvicides, such as high cost and requirement for frequent use. In the present work, a new control method for Cx. pipiens molestus in septic tanks by using mixtures of sucrose solution with insecticides was investigated.
  
  
  RESULTS
  The insecticidal and repellent activities of ten insecticides were evaluated for best control of Cx. pipiens molestus in septic tanks. Firstly, differences in susceptibilities to insecticides were evaluated in topical assays by forced direct contact bioassay and in a screened wire cage by free direct contact bioassay. The difference in insecticide susceptibility in the mosquitoes was the result of repellency by the insecticides. In three septic tanks, the density of Culex mosquitoes was sharply reduced by a deltamethrin-sucrose solution kit.
  
  
  CONCLUSIONS
  The results demonstrated the potential for mosquito control by deltamethrin-sucrose solution, and the study offers basic information related to mosquito control in septic tanks.
authors.affiliation: Division of Medical Entomology, National Institute of Health, Korea Centre for Disease Control and Prevention, Seoul, Republic of Korea.
authors.forename: Ehyun
authors.initials: E
authors.lastname: Shin
authors.forename: Chan
authors.initials: C
authors.lastname: Park
authors.forename: Young-Joon
authors.initials: YJ
authors.lastname: Ahn
authors.forename: Dong-Kyu
authors.initials: DK
authors.lastname: Lee
authors.forename: Kyu-Sik
authors.initials: KS
authors.lastname: Chang
mesh_terms: D000287:Administration, Topical; D000818:Animals; D001681:Biological Assay; D003465:Culex / Q000187:drug effects; D005260:Female; D006801:Humans; D007302:Insect Repellents / Q000494:pharmacology*; D007306:Insecticides; D007814:Larva / Q000187:drug effects; D009032:Mosquito Control / Q000379:methods; D009570:Nitriles; D011722:Pyrethrins; D056910:Republic of Korea; D012996:Solutions / Q000494:pharmacology; D013395:Sucrose / Q000494:pharmacology*; D014865:Waste Disposal, Fluid
chemical_list: D007302:Insect Repellents; D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; D012996:Solutions; C017180:decamethrin; D013395:Sucrose