The purpose of this research is to explore the feasibility of applying an electronic nose for the intelligent monitoring of injurious insects in a stored grain environment. In this study, we employed an electronic nose to sample rough rice that contained three degrees of red flour beetle (Tribolium castaneum Herbst) infestation for different durations-light degree (LD), middle degree (MD), and ...

BACKGROUND The spread of insect-resistance transgenes from genetically engineered (GE) rice to its coexisting weedy rice (O. sativa f. spontanea) populations via gene flow creates a major concern for commercial GE rice cultivation. Transgene flow to weedy rice seems unavoidable. Therefore, characterization of potential fitness effect brought by the transgenes is essential to assess environmenta...

currently, chemical pesticides and radioactive rays are widely used for control of stored product pests. fumigation plays a major role in insect pest elimination in stored products. phosphine and methyl bromide are the two common fumigants used for stored-product protection world over. insect resistance to phosphine is a global issue now and control failures have been reported in field situatio...

Insecticides with growth regulating properties (IGR) may adversely affect insects by regulating or inhibiting specific biochemical pathways or processes essential for insect growth and development. Some insects exposed to such compounds may die due to abnormal regulation of hormone-mediated cell or organ development. Other insects may die either from a prolonged exposure at the developmental st...

Recent developmental studies aimed at elucidating the evolutionary origin of insect wings highlight the difficulties of identifying homology between dramatically different structures.

Insect kinin neuropeptides share a common C-terminal pentapeptide sequence Phe1-Xaa1(2)-Xaa2(3)-Trp4-Gly5-NH2 (Xaa1(2) = His, Asn, Phe, Ser or Tyr; Xaa2(3) = Pro, Ser or Ala) and have been isolated from a number of insects, including species of Dictyoptera, Orthoptera and Lepidoptera. They have been associated with the regulation of such diverse processes as hindgut contraction, diuresis and th...

ginning as a basis for more detaile.d conside.rati~ns ~ith specific types of compounds. SpecIal attentIon IS gIven to the interactions of organophosphates with cholinesterase and the ion permeability of insect nerve, areas of special interest to the author and of general importance. The author has sifted the literature into firm and tentative findings, fact, and opinion. Metabolic pathways are ...

The phytopathogen Pantoea stewartii subsp. stewartii DC283 causes Stewart's wilt disease in corn after transmission from the corn flea beetle insect vector. Here, we report that the complete annotated genome of P. stewartii DC283 has been fully assembled into one circular chromosome, 10 circular plasmids, and one linear phage.

N,N-diethyl-3-methylbenzamide (DEET) has recently been reported to kill cercariae of Schistosoma mansoni in vitro. In addition, it blocked cercarial entry into mouse tail skin. We confirmed these results and compared the efficacy of DEET to a second insect repellent, 1-(3-Cyclohexen-1-yl-carbonyl)-2-methylpiperidine (AI3-37220), in preventing S. mansoni infections in mice. Both AI3-37220 and DE...