Insecticide susceptibility in larval populations of the West Nile vector Culex pipiens L. (Diptera:Culicidae) in Saudi Arabia
- Author:
Aziz Thabiani Al
;
Mahyoub Abdullah Jazem
;
Rehman Hasibur
;
Saggu Shalini
;
Murugan Kadarkarai
;
Panneerselvam Chellasamy
;
Nicoletti Marcello
;
Wei Hui
;
Canale Angelo
;
Benelli Giovanni
- Publication Type:Journal Article
- Keywords:
Acute toxicity;
Biosafety;
Carbamates;
Larvicides M;
osquito control programs;
Pyrethroids
- From:Asian Pacific Journal of Tropical Biomedicine
2016;6(5):390-395
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To investigate the susceptibility to some conventional and non-conventional insecticides in laboratory and field larval populations of the West Nile vector Culex pipiens L. (Cx. pipiens), the dominant species in Jeddah Province, Saudi Arabia.
Methods: The tested conventional insecticides were Actikil and Pesgard, while the non-conventional ones were Bacilod, Dudim and Baycidal. Probit analysis and photo-microscopical observations were carried out to shed light on acute toxicity in laboratory and field Cx. pipiens strains.
Results: Cx. pipiens were more susceptible to Pesgard (LC50: 0.045 and 0.032 mg/L) than Actikil (0.052 and 0.038 mg/L) and Bacilod (0.129 and 0.104 mg/L), for the field and laboratory strains, respectively. Results showed that treatments with the chitin syn-thesis inhibitor Dudim and Baycidal evoked morphological effects similar to those induced by other insect growth regulators. According to IC50 values obtained (concen-tration which to inhibit the emergence of 50%of mosquito adults), the compound Dudim (0.000 3 and 0.000 1 mg/L) was more effective against Cx. pipiens L. mosquitoes than Baycidal (0.000 4 and 0.000 3 mg/L) for both the field and laboratory strains, respectively.
Conclusions: Our results provide baseline data to enhance control programs and orient public health decisions on the selection of pesticides against mosquito vectors in Saudi Arabia.
