Boric acid dust treatments were evaluated as a tool for the integrated management of the German cockroach, Blattella germanica (L.), in commercial confined swine production. The efficacy of boric acid dust was comparable to that of an organic residual insecticide, cyfluthrin, which is commonly used to control cockroaches in this environment. Fall treatments suppressed the cockroach population f...

This study aims to investigate changes in resistance insecticides over a ten-year period five strains of German cockroaches, Blattella germanica (Linnaeus), which had previously shown deltamethrin, propoxur, and fipronil 2012. The were reared laboratory without exposure for ten years. In 2022, they tested the same using topical application method. ratio (RR50) was calculated each strain determi...

The repellency of ultrasound to females of two species of mosquitoes, Anopheles quadrimaculatus Say and Anopheles gambiae Giles (Diptera: Culicidae), and male and female German cockroaches, Blattella germanica (L.) (Blattodea: Blattellidae), was evaluated under laboratory conditions using a random ultrasonic device developed at Kansas State University. This device produces ultrasound in the 20–...

Extensive use of pyrethroid insecticides for urban pest control has led to widespread pyrethroid resistance in the German cockroach. A mutation at nucleotide position 2979 (G to C, causing a leucine to phenylalanine change) in the S6 transmembrane segment of domain II of the para-homologous voltage-gated sodium channel has been previously identiÞed in knockdown-resistant cockroaches and demonst...

BACKGROUND The brown-banded cockroach, Supella longipalpa, is not as common as the German cockroach in Iran. This species seeks out areas that are very warm most of the time, and prefer warmer area than what German cockroaches prefer. There is relationship between development of instars and diet of cockroaches. The aim of this study was to determine the effect of different diets on biology, lif...

BACKGROUND The efficacy of essential oil of Chenopodium ambrosioides flowering aerial parts and its three main active ingredients was evaluated against Blattella germanica male adults. METHODS Composition of essential oil was determined by GC-MS. Topical application bioassay was used to evaluate contact toxicity of essential oil and three main components. Fumigant toxicity of essential oil an...

Horizontal transmission of insecticide occurs when foragers contact or ingest an insecticide, return to the aggregation or nest, and translocate the insecticide to the shelter and its vicinity. Relatively more sedentary members of the population then contact or eat the translocated insecticide and die. We evaluated three different methods of delivering fipronil to adult male German cockroaches,...

Cockroaches are claimed to be mechanical transmitters of disease causing microorganisms such as intestinal parasites, bacteria, fungi, and viruses. This study assessed the potential of the German cockroach Blattella germanica in the mechanical transmission of intestinal parasites of public health importance. A total of 2010 cockroaches were collected from 404 households in Jimma Town, southwest...

Organisms have diverse adaptations for balancing dietary nutrients, but often face trade-offs between ingesting nutrients and toxins in food. While extremely omnivorous cockroaches would seem excluded from such dietary trade-offs, German cockroaches (Blattella germanica) in multiple populations have rapidly evolved a unique dietary specialization - an aversion to glucose, the phagostimulant in ...