title: Small scale field trials of Bacillus sphaericus (strain 2362) against anopheline and culicine mosquito larvae in southern Mexico.
abstract: Experimental breeding sites simulating natural conditions were used to evaluate the efficacy of 2 formulations of Bacillus sphaericus (strain 2362) against Anopheles albimanus and culicine (mostly Culex coronator and Cx. quinquefasciatus) mosquito larvae of southern Mexico. Three doses of each formulation were used in a first field trial: 2, 3 and 4 g/m2 (granular) or 2, 3 and 4 ml/m2 (liquid); and in a second field trial: 0.125, 0.24 and 0.5 g/m2 (granular) or 0.125, 0.25 and 0.5 ml/m2 (liquid). The optimum concentrations of each formulation for effective control of larval populations over periods of 3-4 months were 0.125 ml/m2 of liquid product for Culex spp. and 2 g/m2 of granular product for An. albimanus (ca. 70% mean reduction).
authors.affiliation: Centro de Investigación de Paludismo, Dirección General de Epidemiologia, Tapachula, Chiapas, México.
authors.forename: J I
authors.initials: JI
authors.lastname: Arredondo-Jiménez
authors.forename: T
authors.initials: T
authors.lastname: López
authors.forename: M H
authors.initials: MH
authors.lastname: Rodríguez
authors.forename: D N
authors.initials: DN
authors.lastname: Bown
mesh_terms: D000818:Animals; D000852:Anopheles / Q000382:microbiology*; D001407:Bacillus; D003465:Culex / Q000382:microbiology*; D005069:Evaluation Studies as Topic; D007814:Larva / Q000382:microbiology; D008800:Mexico; D010572:Pest Control, Biological; D011156:Population Density