Semiochemical-based Food-foraging in German Cockroaches, Blattella Germanica L. (dictyoptera: Blattellidae)
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New Food Baits for Trapping German Cockroaches, Blattella germanica (L.) (Dictyoptera: Blattellidae).
German cockroaches (GCRs), Blattella germanica (L.) (Dictyoptera: Blattellidae), are attracted to those beer semiochemicals (e.g., ethanol) that formerly living and active yeasts have produced or otherwise formed in the brewing process. We predicted that an earlier step in the production of beer, where yeasts actively metabolize the sugar in malted barley powder (dry malt extract [DME]), is ver...
متن کاملVector Potential of Blattella germanica (L.) (Dictyoptera: Blattidae) for Medically Important Bacteria at Food Handling Establishments in Jimma Town, Southwest Ethiopia
Cockroaches have been regarded as possible vectors of human enteropathogens. Their presence and crawl particularly in food handling establishments could be risky for human health. Therefore, this study was done to determine the vector potential of cockroach for medically important bacterial pathogens in restaurants and cafeterias. A cross-sectional study was conducted on cockroaches from restau...
متن کاملDetection 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 ...
متن کاملSublethal effects of chlorpyrifos-methyl on reproduction in female German cockroaches (Dictyoptera: Blattellidae).
Longevity and lifetime fecundity were significantly reduced after topical application of LC10, LC20, and LC60's of chlorpyrifos-methyl to 2-d-old female German cockroaches, Blattella germanica (L.). Low concentrations (LC10 and LC20) often resulted in failure of the first ootheca to hatch. This effect is temporary, and greater than or equal to 90% of subsequent oothecae hatched normally. Applic...
متن کاملRepellency and Toxicity of Mint Oil to American and German Cockroaches (Dictyoptera: Blattidae and Blattellidae)
The repellency and toxicity of mint oil to American, Periplaneta americana (L.), and German, Blattella germanica (L.), cockroaches were evaluated in a series of laboratory experiments. In topical application experiments, mint oil was toxic to both species with toxicities (LD50s) of 2.57 (1.98– 4.20) in 10 l and 3.83 (2.35–7.34)% in 2 l for American and German cockroaches, respectively. In conti...
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تاریخ انتشار 2009