Reproductive effects of a neonicotinoid insecticide (Imidacloprid) in the German Cockroaches Blattella germanica L. (Dictyoptera, Blattellidae)

Semiochemical-based Food-foraging in German Cockroaches, Blattella Germanica L. (dictyoptera: Blattellidae)

Detection of malathion and chlorpyrifos resistance mechanism in German cockroaches (Blattella germanica, Insecta: Blattodea: Blattellidae) using piperonyl butoxide and tributyl phosphorotrithioate

Introduction: German cockroach (Blattella germanica, Insecta: Blattodea: Blattellidae) is considered one of the most common household pests which can transfer pathogenic agents and also cause allergic reactions. Frequent and uncontrolled spraying caused resistance in German cockroach to insecticides. In this study we aimed, to determine the malathion and chlorpyrifos resistance mechanism ...

Laboratory and field performance of an imidacloprid gel bait against German cockroaches (Dictyoptera: Blattellidae).

An experimental 2.15% imidacloprid gel bait containing approximately 44% water was evaluated in laboratory and field studies against the German cockroach, Blattella germanica (L). In continuous exposure tests, toxicity and presumably bait consumption varied with cockroach stage, deprivation of competitive food, and temperature. The LT50 values for cockroaches provided with competitive food rang...

Toxicity of Pyrethroid and Organophosphorous Insecticides against Two Field Collected Strains of the German Cockroach Blattella germanica (Blattaria: Blattellidae)

BACKGROUND The German cockroach, Blattella germanica is a major hygienic pest and mechanical vector for pathogenic agents in hospitals and residential areas. The development of insecticide resistance is a serious problem in controlling of this pest. Toxicity of four commonly used insecticides (permethrin, cypermethrin, malathion and chlorpyrifos) against two hospital- collected strains of the G...

Cumulative toxicity and delayed temperature effects of hydramethylnon on German cockroaches (Orthoptera: Blattellidae).

J. Econ. Enlomol. 79: 1613-1616 (1986) ABSTRACT Blattella germanica (L.) males succumbed to two consecutive sublethal doses of hydramethylnon (an amidinohydrazone) spaced up to 6 days apart. The same effect was not observed with a carbamate (propoxur) or organophosphate (chlorpyrifos) insecticide. Radiotracer analysis revealed presence of HCresidues inside cockroaches for at least 21 days follo...