[Preliminary investigation of four anopheles larvae samples susceptibility to chlorpyrifos in Tunisia].
Larvae susceptibility to chlorpyrifos is studied on four Tunisian Anopheles larvas samples: Anopheles labranchiae from Rades (South of Tunis) and Menchar (region of Beja), in the North of Tunisia, A. sergentii from Meknassy and A. multicolor from Sidi Bouzid, both in the Centre of Tunisia. The test results of larvae susceplibility indicate that the LC50 and the LC95 values are less than 0.002 and 0.02 mg l-1 respectively and their 95% confidence limits overlap. We also notice that the studied samples show the same susceptibility to chlorpyrifos. The results can be used as a base data further studies on the susceptibility of Anopheles to chemical insecticides.
Krida
G
G
Laboratoire d'Entomologie Médicale, Institut Pasteur de Tunis, 13 Place Pasteur, B.P. 74, 1002 Tunis-Bèlvédère, Tunis.
Bouattour
A
A
Rhaim
A
A
el Kebir
A
A
Jlidi
R
R
D000818:Animals; D000852:Anopheles; D004390:Chlorpyrifos / Q000592:standards*; D006801:Humans; D007303:Insect Vectors; D007305:Insecticide Resistance; D007306:Insecticides / Q000592:standards*; D007814:Larva; D007928:Lethal Dose 50; D008288:Malaria / Q000453:epidemiology / Q000517:prevention & control / Q000635:transmission; D009032:Mosquito Control / Q000379:methods; D011159:Population Surveillance; D012111:Residence Characteristics; D012494:Sampling Studies; D014416:Tunisia / Q000453:epidemiology
D007306:Insecticides; D004390:Chlorpyrifos