title: Impact of water renewal on the residual effect of larvicides in the control of Aedes aegypti.
abstract: This study was carried out to evaluate the residual effect of three larvicides under laboratory conditions for 100 days in Aedes aegypti. The larval mortality rate was measured without water renewal or with daily water renewal (80%). With temephos, there was 100% mortality in both groups until the 70th day. In the Bacillus thuringiensis israelensis (Bti)-WDG test, there was no difference during the first 20 days. With Bti-G, without water renewal, mortality was sustained above 90% for up to 35 days. The second experiment (with water renewal) reduced the mortality to below 90% after the first 20 days. When renewed water was provided, the residual effect was significantly lower for all larvicides.
authors.affiliation: Departamento de Saúde Comunitária, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil. rjpontes@fortalnet.com.br
authors.forename: Ricardo José Soares
authors.initials: RJ
authors.lastname: Pontes
authors.forename: Fábio Fernandes
authors.initials: FF
authors.lastname: Dantas Filho
authors.forename: Carlos Henrique Morais de
authors.initials: CH
authors.lastname: Alencar
authors.forename: Ana Cláudia Ferreira
authors.initials: AC
authors.lastname: Regazzi
authors.forename: Luciano Pamplona de Góes
authors.initials: LP
authors.lastname: Cavalcanti
authors.forename: Alberto Novaes
authors.initials: AN
authors.lastname: Ramos
authors.forename: José Wellington de Oliveira
authors.initials: JW
authors.lastname: Lima
mesh_terms: D000330:Aedes; D000818:Animals; D007303:Insect Vectors; D007306:Insecticides; D007814:Larva; D009032:Mosquito Control; D010573:Pesticide Residues / Q000494:pharmacology*; D000002:Temefos; D013997:Time Factors; D014867:Water
chemical_list: D007306:Insecticides; D010573:Pesticide Residues; D014867:Water; D000002:Temefos