title: Susceptibility of Phlebotomus argentipes against DDT in endemic Districts of North Bihar, India.
abstract: Susceptibility status of Indian kala-azar vector Phlebotomus argentipes after DDT spray from endemic areas of Muzaffarpur and Vaishali district and unsprayed non-endemic area of Patna district, Bihar, India were compared. Higher Lc50 viz. 2.6% and 3.2% and LT50, values 51.0 and 69.0 minutes to 4% DDT were observed for P. argentipes of Muzaffarpur and Vaishali district, whereas P. argentipes of Patna district was 100% susceptible to same concentration, indicating increased tolerance in P. argentipes. It is concluded DDT resistant P. argentipes, particularly in endemic zone growing. The possible explanation could be long-term insecticidal pressure.
authors.affiliation: Department of Vector Biology & Control, Rajendra Memorial Research Institute of Medical Sciences, Indian Council of Medical Research, Agamkuan, Patna-800 007.
authors.forename: K
authors.initials: K
authors.lastname: Kishore
authors.forename: V
authors.initials: V
authors.lastname: Kumar
authors.forename: S
authors.initials: S
authors.lastname: Kesari
authors.forename: S K
authors.initials: SK
authors.lastname: Bhattacharya
authors.forename: P
authors.initials: P
authors.lastname: Das
mesh_terms: D000818:Animals; D003634:DDT / Q000008:administration & dosage / Q000494:pharmacology*; D019353:Endemic Diseases; D005260:Female; D007194:India / Q000453:epidemiology; D007303:Insect Vectors / Q000187:drug effects*; D007305:Insecticide Resistance; D007898:Leishmaniasis, Visceral / Q000517:prevention & control / Q000635:transmission; D010691:Phlebotomus / Q000187:drug effects*
chemical_list: D003634:DDT