4 results about "Fall webworm" patented technology

This invention relates to a HcKynU Genes, dsRNAs targeting these genes, and their applications. This invention focuses on horizontal gene transfer. HcKynU Designing dsRNAs specifically for the control of the fall webworm (Russian white moth) not only allows for precise pest control but also avoids threatening non-target species. Injecting this dsRNA into the fall webworm effectively silences its target gene, leading to increased mortality and impaired normal growth and development, ultimately achieving control. This invention provides a new and effective approach for controlling the fall webworm.

This invention discloses a strain of *Backusella circina* and its application. The strain number of *Backusella circina* is JSAFC 2057, which was deposited at the China General Microbiological Culture Collection Center (CGMCC) on September 23, 2024, with accession number CGMCC No. 41522. This fungal agent can significantly inhibit the survival activity of the fall webworm (*Triplophysa fulvidraco*), reducing the survival activity of fall webworm larvae to zero after 7 days of treatment and culture. The fungus provided by this invention is a biocontrol fungus for the control of the major pest, the fall webworm. It is characterized by strong pathogenicity against fall webworm larvae, environmental safety, and low likelihood of inducing pesticide resistance in pests, and can be applied to the biological control of the fall webworm.

This application relates to the field of pest control, specifically providing a trunk-encircling pupation device for controlling the fall webworm and its usage method. The device includes a base box, fixing rods, connectors, and a fence. The base box has an open top, and two fixing rods are fixedly installed on the inner edge of the base box, located at both ends of the inner edge. Connectors are connected to the upper ends of the two fixing rods, extending outwards from the base box. The suspended ends of the two connectors connect to both ends of the fence. The area enclosed by the fence, connectors, and fixing rods is larger than the area of ​​the open top of the base box. In use, the fixing rods are tied to the tree trunk, and rod-shaped filler is placed between the base box and the fence. After pupation is complete, the rod-shaped filler is removed and disposed of, and replaced with new rod-shaped filler. Multiple gradually narrowing gaps are formed in the rod-shaped filler, providing a stable and well-ventilated pupation environment for the fall webworm, resulting in good pupation attraction.

This invention discloses an RNA biopesticide targeting the HcAmy2 gene of the fall webworm and its preparation method, relating to the fields of biopesticides and green pest control technology. The active ingredient of the biopesticide is double-stranded RNA targeting the α-amylase gene of the fall webworm, namely dsHcAmy2, and is encapsulated by chitosan to form a chitosan / dsRNA nanocomposite. The degree of deacetylation of the chitosan is ≥95%, and the viscosity is 100-200 mPa·s. The nanoparticles prepared by this invention can effectively protect dsRNA from degradation, significantly enhance its stability and RNA interference efficiency, effectively silence the key gene HcAmy2 of the fall webworm, destroy its multi-host adaptability, and have a highly efficient and specific control effect on fall webworm larvae.