German cockroaches are common pests of confined swine production in North Carolina and other southeastern states. Vector competence of German cockroaches for one of the most important porcine bacterial pathogens, verotoxigenic Escherichia coli F18, was evaluated in laboratory bioassays using a culturing approach followed by multiplex PCR. In addition, the populations of fecal coliforms from the...

Chlordimeform is a relatively new acaricide/insecticide, whose mode of action we have investigated. It appears to interfere with amine-mediated control of nervous and endocrine systems in a variety of ways. Specifically, chlordimeform causes a build-up of the amines 5-hydroxytryptamine and to a lesser extent norepinephrine in the rat brain in vivo, antagonizes the in vivo action of reserpine in...

90 he German cockroach, with its long history of close association with humans, is most often regarded as merely an unpleasant pest with the potential to transmit disease-causing microbes. However, recent research has demonstrated that this insidious pest has a much greater impact on public health than was once thought. German cockroaches, first implicated in allergic disease nearly 40 years ag...

BACKGROUND Passenger ships provide conditions suitable for the survival and growth of pest populations. Arthropods and rodents can gain access directly from the ships' open spaces, can be carried in shiploads, or can be found on humans or animals as ectoparasites. Vectors on board ships may contaminate stored foods, transmit illness on board, or, introduce diseases in new areas. Pest species, s...

The interspecific competition between a new cockroach pest species in Southeast Asia, the Smooth cockroach, Symploce pallens (Stephens) and the ubiquitous German cockroach, Blattella germanica (L.) was studied under different food and water regimes (unlimited food and water [control], limited water, limited food and limited food and water). Both species were found to have equal chances to coexi...

INTRODUCTION Cockroach allergen exposure elicits cockroach sensitization and poses an increased risk for asthma. However, the major components in cockroach allergen and the mechanisms underlying the induction of cockroach allergen-induced allergy and asthma remain largely elusive. We sought to examine the role of cockroach-associated glycan in regulating human basophil function. METHODS N-lin...

Cockroach role as vectors of many diseases, as well as allergens. Eradication using chemical insecticide with risky accumulate on foodstuffs and through inhalation and damage the environment. Annona squamosa is potentially leaves as botanical insecticide as it is more environmentally friendly. This research aims to unravel the efficacy of Annona squamosa leaves extract to kill cockroach (Peripl...

background: the efficacy of piper aduncum essential oil was evaluated against periplaneta americana adults and nymphs in the laboratory. methods : the plant essential oil at varying concentrations ranging between 10,000 to 80,000 ppm were placed inside glass beakers, rolled horizontally to ensure the essential oil covers all sides of the beakers and exposed to adults and nymphs of p. americana ...

the susceptibility of 5 wild strains of german cockroach collected from five infected flats in tehran were assessed by tests of surface contact method to cyfluthrin, permethrin, sumithrin and lambdacyhalothrin. comparison of the result of knockdown tests on the wild strains with a standard susceptible strain indicated that all the strains are resistant to sumithrin, i.e., resistance ratio, the ...