b a ckground: the efficacy of essential oil of chenopodium ambrosioides flowering aerial parts and its three main active ingredients was evaluated against blattella germanica male adults. m e t hods: composition of essential oil was determined by gc-ms. topical application bioassay was used to evalu- ate contact toxicity of essential oil and three main components. fumigant toxicity of essential...

The current dearth of long-term insect population trends is a major obstacle to conservation. Occupancy models have been proposed as solution, but it remains unclear whether they can yield from natural history collections, since specimen records are normally very sparse. A common approach for sparse data coarsen its spatial and/or temporal resolution, although coarsening risks violating model a...

AIM To evaluate German cockroach (Blattella germanica) allergen levels in house dust and skin reactivity to German cockroach in adult atopic and non-atopic subjects in inland areas of Croatia. METHODS Blattella germanica group 2 (Bla g 2) allergen was measured using the enzyme-linked immunosorbent assay (ELISA) on test strips (Dustscreen(TM) test, Heska AG, Switzerland) in 94 house dust sampl...

BACKGROUND Sensitization to allergens produced by German and American cockroaches is strongly associated with the cause of asthma. Most of the cockroach allergens identified to date have been species specific. OBJECTIVE The aim of this study was to identify and sequence cross-reactive cockroach allergens. METHODS A Periplaneta americana cDNA library was screened with IgE antibody from patie...

quantitative real time PCR; REST, relative expression software tool. 31 32 2 SUMMARY 33 Aquaporins (AQPs) are membrane proteins that form water channels, allowing rapid 34 movement of water across cell membranes. AQPs have been reported in species of all 35 life kingdoms and in almost all tissues, but little is known about them in insects. Our 36 purpose was to explore the occurrence of AQPs in...

Background: The German cockroach (Blatella germanica) is one of the most important vectors of public health interest due to its involvement in the transmission of infectious diseases. Different insecticides are used to control cockroaches; however, resistance developed against most of insecticides has made them ineffective. Attempts should always be made to find proper alternat...