title: Evaluation of Bacillus sphaericus formulations against the vector of bancroftian filariasis.
abstract: Three different formulations of Bacillus sphaericus viz, Spherimos, Vectobac and Spherifix, were evaluated for their efficacy and residual activity against Culex quinquefasciatus breeding in polluted disused wells. Spherimos, a flowable concentrate formulation, exerted 96-100% control when treated at the dosage of 10 l/ha for 17 days, whereas the effective residual activity lasted up to 67 days at 15 l/ha. In the case of Vectolex, a granular formulation, the residual activity lasted up to 56 days with the dosage of 30 l/ha and up to 66-77 days with higher dosages of 45 and 60 l/ha. The residual activity of Spherifix, a floating controlled release formulation, lasted up to 67 days with a dosage of 10 kg/ha.
authors.affiliation: Vector Control Research Center (ICMR), Pondicherry, India.
authors.forename: N
authors.initials: N
authors.lastname: Arunachalalm
authors.forename: C M
authors.initials: CM
authors.lastname: Reddy
authors.forename: S L
authors.initials: SL
authors.lastname: Hoti
authors.forename: M
authors.initials: M
authors.lastname: Kuppusamy
authors.forename: K
authors.initials: K
authors.lastname: Balaraman
mesh_terms: D000818:Animals; D001407:Bacillus; D003465:Culex / Q000469:parasitology*; D004605:Elephantiasis, Filarial / Q000517:prevention & control*; D005069:Evaluation Studies as Topic; D007303:Insect Vectors / Q000469:parasitology; D007814:Larva; D010572:Pest Control, Biological; D011679:Pupa; D013997:Time Factors; D014881:Water Supply; D014958:Wuchereria bancrofti