56 results about "Trail pheromone" patented technology

The invention discloses an assembly sequence planning method. The method can be divided into three stages, wherein at the first stage, assembly information is collected and a fitness function is established; at the second stage, the assembly sequence is found through the chaotic mixing algorithm; at the third stage, the fitness value is calculated, the scales of species are dynamically renewed, and route pheromones are renewed. The chaotic algorithm is added on the basis of the ant genetic algorithm, the chaotic algorithm search is introduced after the ant algorithm search is conducted so that the local search capacity of the algorithms is enhanced, feasible solutions fond through the two algorithms serve as initial species of the genetic algorithm, and the overall search capacity of the genetic algorithm is guided. Due to the fact that the initial species are enriched, the overall search capacity of the genetic algorithm is enhanced, and the search space is enlarged.

The present invention discloses systems and methods for controlling arthropod populations. The systems include a polymeric substrate, a semiochemical that is reactive upon an adult-stage arthropod, and an insecticide that is toxic to an immature-stage arthropod. The semiochemical may be a sex pheromone that disrupts mating behavior of the adult-stage arthropod. The insecticide may be a per os insecticide that only affects the immature-stage arthropod. The arthropod to be controlled may be gypsy moths, in which case the semiochemical may be disparlure and the insecticide may be spinosad. Further disclosed are methods for preparing systems for use in controlling arthropod populations.

The present invention discloses systems and methods for controlling arthropod populations. The systems include a polymeric substrate, a semiochemical that is reactive upon an adult-stage arthropod, and an insecticide that is toxic to an immature-stage arthropod. The semiochemical may be a sex pheromone that disrupts mating behavior of the adult-stage arthropod. The insecticide may be a per os insecticide that only affects the immature-stage arthropod. The arthropod to be controlled may be gypsy moths, in which case the semiochemical may be disparlure and the insecticide may be spinosad. Further disclosed are methods for preparing systems for use in controlling arthropod populations.

The present invention makes available a rapid, reproducible, robust assay system for screening and identifying pharmaceutically effective compounds that specifically interact with and modulate the activity of a cellular protein, e.g., a receptor or ion channel. The subject assay enables rapid screening of large numbers of compounds to identify those which act as an agonist or antagonist to the bioactivity of the cellular protein. In this system, the cell is treated with a compound, and functional interaction of this compound with a cellular receptor yields a detectable signal, which can be specifically measured. The subject assays include methods of identifying compounds which specifically modulate, for example, heterologous receptors coupled to the pheromone response pathway in yeast. The subject assays are particularly amenable to the identification of specific agonists and antagonists of G protein-coupled receptors.

The invention provides a method for analyzing insect semiochemicals by combining GC-MS and an electroantennography and belongs to the technical field of screening and determination of compounds. According to the method, screening of the insect semiochemicals and identification of sample material components can be synchronously performed, experiment steps are simplified, quick and efficient, the consistency of experimental data can be ensured, and higher economy and practicality are realized. The technical scheme is that the method comprises the following steps: cutting off tentacles of insectsalong base parts, removing small parts of top ends, then respectively fixing two ends of in vitro tentacles on a probe of the electroantennography by using a conductive adhesive, and enabling the tentacles to be connected with a microelectrode; feeding a sample into a gas chromatograph, and carrying out GC-MS and an electroantennography combined analysis; carrying out mass spectrometric detectionon peaks appearing at the same retention time of a GC-MS chromatogram and an electroantennography chromatogram, and identifying the insect semiochemicals with the activity by checking a standard spectral library with a standard mass spectrogram of the compounds. The method provided by the invention can be applied in a sensory mechanism of the insects to the semiochemicals, screening of active pheromone components or secondary plant substances and the like.

Provided herein are genetically modified microbes. In one embodiment, a genetically modified microbe includes an exogenous polynucleotide comprising a pheromone-responsive region. In one embodiment, the pheromone-responsive region is derived from a conjugative plasmid from a member of the genus Enterococcus spp. The pheromone-responsive region includes a pheromone-responsive promoter and an operably linked coding region encoding an antimicrobial peptide. In one embodiment, a genetically modified microbe includes an exogenous polynucleotide comprising a promoter and an operably linked coding sequence encoding an antimicrobial peptide, where expression of the coding region is controlled by a modulator polypeptide and is altered by a modulating agent, and where the coding region encodes an antimicrobial peptide. Also provided herein are methods of using the genetically modified microbes, including methods for inhibiting growth of an Enterococcus spp., a pathogenic E. coli, or a pathogenic Salmonella spp., for treating a subject, and for modifying a subject's gastrointestinal microflora.

The invention relates to a glue-spraying type pest attractant. The attractant comprises the following components in parts by weight: 90-95 parts of pest sticking glue, 3-8 parts of insect pheromone, 0.1-3 parts of 3-phenylpropionaldehyde and 0.1-3 parts of eucalyptol. The insect pheromone is prepared from anisaldehyde, p-tolualdehyde, ethyl 3- piperidinecarboxylate, 4-anisaldehyde, citronellol andeugenol according to the mass ratio of (1-15):(1-15):(1-15):(1-5):(1-5):(1-5). According to the invention, the compounded 3-phenylpropionaldehyde and the eucalyptol are used as plant-source synergists and can improve the attracting effect of the insect pheromone by 20%-35%. Meanwhile, the oily glue is utilized as a release agent and is sprayed on appliance surfaces, and when a diluent is volatilized, the high binding character of the colloid is utilized for high efficiently attracting and killing pests. The pest attractant provided by the invention meets the urgent requirements of glue-spraying type pest attractants with no public nuisance, high efficient attraction, good stickiness, high strength, good stability, simple and convenient operation and low cost on the market, and has a widemarket prospect.

Provided are a behavior-disrupting agent of Argentine ants for controlling them or suppressing their reproduction is a safer and more effective manner, and the behavior-disrupting method of them. More specifically, a behavior-disrupting agent of Argentine ants comprising Z-9-hexadecenal, and a behavior-disrupting method of Argentine ants comprising a step of using the behavior-disrupting agent are provided based on the finding that the behavior of Argentine ants is disrupted by emission of Z-9-hexadecenal, which is a trail pheromone, into the atmosphere.

Provided herein are methods of generating genetically modified microorganisms, e.g., genetically modified yeast strains, which comprise functional disruptions in one or more pheromone response genes and one or more sporulation genes, and genetically modified yeast cells, e.g., genetically modified diploid and haploid yeast cells, that lack sporulation capability and endogenous mating capability, produced thereby.

An insect control substance for controlling certain flying insect pests in proximity to the substance includes a rubber crumb carrier having a plurality of rubber particles and a volatile hydrophobic semiochemical for attracting certain flying insect pests absorbed within the rubber particles forming a discontinuous phase of the substance. The insect control substance also includes a body of water forming a continuous phase of the substance within which the discontinuous phase is suspended. When the insect control substance is applied to an application surface the discontinuous phase is exposed to the surrounding air and the semiochemical within the rubber particles evaporates into the air around the application surface and attracts the flying insect pests to the rubber crumb carrier to facilitate control of the flying insect pests.