30 results about "Blatella germanica" patented technology

The invention provides a novel pyrethroid compound having the following structural formula (X), a preparation method of the compound and application thereof in sanitary desinsection products. In the formula, R is methoxymethyl (-CH2OCH3) or an H atom. Experiments show that the compound of the formula (X) has very good control efficiency on sanitary insect pests such as mosquito, fly, and blattella germanica, etc. In addition, the advantage which is especially worth being noticed is that the single optical isomer of the dextral cis form of the compound has better desinsection activity compared with corresponding despinner.

The invention discloses a method for producing German cockroach allergen Bla g 7 protein in a rhabdovirus-insect expression system, comprising the following steps: total RNA is extracted from the tissue of the German cockroach, the total RNA is reversely transcripted into cDNA, a coding gene of German cockroach allergen Bla g 7 is obtained by the method of PCR; the coding gene is cloned to a rhabdovirus carrier, insect cells are transformed for expression; the method of affinity chromatography is adopted for purification, thus obtaining the German cockroach allergen Bla g 7 protein. The protein is different from Bla g 7 protein of foreign sources in terms of 2 amino acid locuses. In the invention, the rhabdovirus-insect expression system is adopted to produce German cockroach allergen Blag 7 protein, thus avoiding influence on Bla g 7 allergen structures in different expression systems (such as bacterial and microzyme); in addition, the invention provides the method of affinity chromatography, thus solving the problem that the Bla g 7 allergen has complex purification process.

The invention discloses a Grh gene relevant with blattella germanica crust development, dsRNA of the gene and a preparation method and application of the dsRNA. The nucleotide sequence of the Grh geneis shown as SEQID No.1, and the dsRNA is double stranded RNA consisting of the nucleotide sequence as shown in SEQID No.2 and the nucleotide sequence which is backward complementary with the nucleotide sequence as shown in SEQID No.2. An RNAi jamming technique is adopted, and through dsRNA synthesis, crust developmental relevant gene Grh is targetedly silent to influence exuviate of roaches, andbased on blocking or destroying roach exuviate, the purpose of roach control is achieved. A new molecular target is provided for pest control.

The invention provides a biological source insecticidal composition and applications thereof. According to the invention, Metarhizium spores and boric acid are used as main active components, and auxiliary agents such as trehalose, sorbitol and the like are added, such that the moisture evaporation loss is reduced, the activity of Metarhizium spores is improved, and the use period is prolonged; and creamy flavors and Blattella germanica exoskeleton powder rich in cockroach pheromone are adopted to induce cockroaches to eat, and extra sugar is not introduced as a phagostimulant, such that the possibility of mixed bacterial introducing is reduced while the induction range is expanded and the attraction effect is enhanced so as to substantially prolong the storage and use period and achieve good practical application value.

The invention relates to a composition containing tetraflumethrin and cypermethrin and application thereof and provides a pesticidal composition for preventing and controlling sanitary pests such as sanitary mosquitoes, sanitary flies, blattella germanica and the like. The mass ratio of the tetraflumethrin to the cypermethrin is 1:99-99:1. When compounded, two pesticides contained in the composition have remarkable mutual synergistic effect and can remarkably improving the prevention and control effect on the sanitary pests. When used for preparing products such as coil-type insect-killing mosquito incenses, pesticidal aerosols and the like, the pesticidal composition has the advantages of rapid killing of the pests and durable pesticide effect and can ideally prevent and control the sanitary pests which are resistant to dimethrin medicaments.

The invention discloses an insecticidal composition taking fermentation liquid containing metarhizium anisopliae and hydramethylnon as main active ingredients. The composition takes metarhizium anisopliae powder, metarhizium anisopliae fermentation liquid and the hydramethylnon as the main active ingredients; or the composition takes the fermentation liquid containing the metarhizium anisopliae and the hydramethylnon as the main active ingredients. The results of an indoor toxicity test show that the insecticide has a good killing effect on blattella germanica and has a significant synergisticeffect.

The invention provides an insecticidal composition for controlling the sanitary insect pests such as mosquitoes, flies, blattella germanica, and the like. The insecticidal composition comprises a component (A) dichlor dimefluthrin and a component (B) 2, 3, 5, 6-tetrafluoro-4-methoxyl methyl benzyl-3-(3, 3, 3-trifluoro-propenyl)-2, 2-dimethyl propane carboxylate, wherein, the mass ratio between the component (A) and the component (B) is 1:20 to 99:1. The coil type mosquito repellent incenses, the electric mosquito-repellent mats, the electric mosquito repellent vaporizer, the insecticide aerosol and other products which are prepared by using the insecticidal composition have the advantages of rapid killing to the insect pests and long-term drug effect.

The invention discloses a gene, a gene fragment, a corresponding dsRNA that regulates the synthesis of sex pheromone of Blattella germanica and a preparation method and application thereof. The nucleotide sequence of the gene that regulates the synthesis of sex pheromone of Blattella germanica is as shown in SEQ ID No.1. The nucleotide sequence of the gene fragment is as shown in SEQ ID No.3. Introduction of dsRNA synthesized using the fragment as a template into female Blattella germanica can significantly inhibit the expression level of CYP4PC1 gene, leading to the reduction of methyl ketonesex pheromone synthesis. Finally, the courtship behavior of some male individuals of Blattella germanica disappears. The invention provides a potential molecular target for the management strategy based on cockroach mating and reproduction.