Synergism of chlorpyrifos against the German cockroach, Blattella germanica

K Dong; J G Scott

doi:10.1111/j.1365-2915.1992.tb00612.x

Synergism of chlorpyrifos against the German cockroach, Blattella germanica

Med Vet Entomol. 1992 Jul;6(3):241-3. doi: 10.1111/j.1365-2915.1992.tb00612.x.

Authors

K Dong¹, J G Scott

Affiliation

¹ Department of Entomology, Cornell University, Ithaca, New York.

PMID: 1384807
DOI: 10.1111/j.1365-2915.1992.tb00612.x

Abstract

Of fifteen compounds tested as synergists for chlorpyrifos against susceptible and resistant strains of Blattella germanica, the German cockroach, eleven were active against the resistant strain but only seven were synergistic against the susceptible strain. Overall, the most effective synergist was S,S,S-tributyl phosphorotrithioate (DEF) followed by phenyl saligenin cyclic phosphonate (PSCP) and two substituted N,N-dimethylcarbamates: SK-102 and SK-37. The most effective synergist for overcoming chlorpyrifos resistance was SK-37 which reduced the resistance ratio by 3.2-fold. Four other synergists which reduced chlorpyrifos resistance, in order of their effectiveness, were: SK-102 > PSCP > DEF > tridiphane. The potential usefulness of these synergists for German cockroach control is discussed.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Animals
Chlorpyrifos*
Cockroaches*
Drug Synergism
Insecticide Resistance
Insecticides*

Substances

Insecticides
Chlorpyrifos