| 9768250 |
Diaz C, Bisset JA, Gonzalez T, Rodriguez MM: [Resistance to organophosphate, carbamate, and pyrethroid insecticides in Blattella germanica (Dictyoptera: Blattellidae) in 2 municipalities of the City of Havana]. Rev Cubana Med Trop. 1994;46(2):130-2.
We determined the resistance of 2 Blattella germanica strains collected in 2 municipalities of City of Havana--Playa (P) and Centro Habana (CH)--to six insecticides: malathion, pyrimiphos-methyl, propoxur, cipermetrine, deltametrine, and lambda cialotrine. The P strain showed resistance only to deltametrine (FR = 80); the CH strain was susceptible to propoxur and lambda cialotrine and resistant to malathion (FR = 12), pyrimiphosmethyl (FR = 13), cipermetrine (FR = 16), and deltametrine (FR = 100). Gene frequency of increased esterases and of the modified acetylcholinesterase was determined in the 2 strains. The values of increased esterases in the two collected strains were: P = 0.90; and CH = 0.91. Values of the modified acetylcholinesterase in the two strains were: P = 0.47; and CH = 0.12. |
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