39 results about "Varroa destructor" patented technology

An isolated nucleic acid agent is disclosed comprising a nucleic acid sequence which downregulates expression of a gene product of a Varroa destructor mite. Compositions comprising same and uses thereof are also disclosed.

A method and apparatus for removing of Varroa Mites from Honeybees as the Honeybee enter and exit the hive entrance.

A frame and comb foundation and method for controlling Varroa mites in a honeybee hive. In a first embodiment the invention is comprised of half portions of the frame and comb foundation in combination with a power supply, heating element, electronic control unit (ECU), temperature sensor and an optional diagnostic system. The ECU which may be mounted on the frame and comb foundation or, in a separate enclosure is comprised of a micro-controller and other circuitry. The temperature sensor is mounted adjacent to the heating unit. The power supply may mobile or stationary, such as a battery or line current.

In a second embodiment, the frame and comb foundation is interconnected with similar frame and comb foundations in multiple hives that include individual ECU's and temperature sensors and individual wireless electronic communication systems, a single power source and individual heating elements. The multiple temperature sensors are mounted adjacent to the heating elements. The ECU's are mounted on the frame and comb foundations or in separate enclosures. The ECU's are comprised of logic circuits or micro-controllers and other circuitry. The power source may be a mobile or stationary source such as a battery.

The present invention is directed to methods and compositions for use to control parasitic mites of honey bees, particularly Varroa mites. In one aspect, the invention is directed to control of parasitic mites of honey bees wherein the active ingredient is a miticidally effective amount of a selected ketone or 1-heptanol, ethyl butyrate, benzaldehyde, heptaldehyde, or d-limonene. In a second aspect, the invention is directed to control of parasitic mites of honey bees wherein the active ingredient is an effective attractant amount of 2-heptanone. The attracted mites are then trapped or otherwise removed from the locus of the bees. The present invention is also directed to methods and compositions which include 2-heptanone to control hive invading pests of honey bees.

The invention discloses a chitinase ChiCl for deactivating a varroa destructor and application thereof. In the invention, The chitinase ChiCl for deactivating the varroa destructor is prepared by cloning a gene base sequence from a genome DNA of serratia marcescens GEI, and applying a procaryon expression carrier pET-32a(+) to express the gene in colon bacillus. Purification, renaturation and bioassay are carried out on a protein coded by the gene, a result shows that the protein has toxicity to the varroa destructor, and under a condition that the activity of the chitinase ChiCl is 14.7 U/ml, the varroa destructor transfected by the protein has a mortality rate of 25 percent after 5 days. Sequencing analysis shows that the gene is a new sequence of chitinase gene ChiCl types. The invention can be used in an aspect of preventing the mite damage of bees.

The invention concerns a composition for the treatment of varroa mite infestations in honeybee colonies, comprising a base layer and an active layer, wherein the active layer comprises an effective amount of an acaricidal compound.

The invention discloses mixed essential oil for preventing and controlling mites in honeybees. The mixed essential oil, according to a formula, consists of asarum sieboldii essential oil, star anise essential oil and clove essential oil in percentage by volume of 3 to 4 to 2. The mixed essential oil is mainly applied to bee swarms in a mode of fumigating by the dosage of 2ml per box of the bee swarms, and the mixed essential oil is applied once every other 5-7 days and 3-5 times per treatment courses. The mixed essential oil, as a plant-source acaricide, is free from antibiotics and is safe to bee products; and the mixed essential oil is good in mite killing effect and quite low in toxicity on the honeybees, and the mixed essential oil is effective to varroa destructor and is simple to operate.

The invention discloses a chitinase for deactivating a varroa destructor, a serratia marcescens and application thereof. In the invention, the serratia marcescens for deactivating the varroa destructor is separated from intestines of Chinese worker bees and is stored in a Chinese typical culture storage center with a storage number of CCTCC M 209097; a gene base sequence is cloned from the serratia marcescens, and a procaryon expression carrier pET-32a(+) is applied to express the gene in a colon bacillus. Purification, renaturation and bioassay are carried out on a protein coded by the gene, a result shows that the protein coded by the gene has stronger toxicity to the varroa destructor, and sequencing analysis shows that the protein is a new sequence of chitinase gene ChiA types. The invention can be used for preventing the mite damage of bees.

The invention relates to a device for combating the varroa mite in a bee brood, comprising at least one middle wall that can be inserted in particular into a beehive and that is provided with brood cells for female bees, the device having an electrical heating device that has a resistance heating element embedded in the middle wall and a control device connected to the latter which is designed such that an automatically running heating process can be initiated with a temporally pre-determined heat-up phase that lasts until a temperature of 39° C. to 45° C., preferably 39° C. to 42° C., is reached at the bottom of the brood cells in the region of the resistance heating element and then with a subsequent phase of maintaining this temperature for a predetermined period of time.

The invention discloses a varroa destructor invasion behavior analyzing device and a method for analyzing invasion preference of varroa destructor to apis cerana and apis mellifera larvae. The varroadestructor invasion behavior analyzing device comprises a culture dish, which is composed of a culture dish bottom and a culture dish cover; on two diameter lines perpendicular to each other on the round bottom surface of the culture dish bottom are provided with four bee queen rearing cups spaced from the center of the round bottom surface at equal intervals, the height of the side wall of the culture dish bottom is higher than that of the bee queen rearing cups, the inside of the culture dish bottom is provided with beewax level to the bee queen rearing cups, and the beewax in the center ofthe culture dish bottom is provided with a slot. The varroa destructor invasion behavior analyzing device is low in manufacturing difficulty and rapid in manufacturing and accordingly can effectivelycontrol the production cost and facilitate generalized application. Besides, the main manufacturing material, namely the pure beewax, is high in plasticity, so that the varroa destructor invasion behavior analyzing device has the potential of being further modified and reutilized.

The invention provides a medicine for preventing and controlling varroa destructors. The medicine is rosewood heart wood essential oil, and is prepared according to a method for extracting volatile oil in Chinese Pharmacopoeia (2010 version). The medicine is put on filter paper of bee hives and acts on bees and the varroa destructors by natural volatilization to achieve an effect of preventing and controlling the varroa destructors of the bees, wherein the using amount of the rosewood heart wood essential oil in each bee hive is between 0.5 and 10 millimeters. A method for preventing and controlling the varroa destructors has a good effect of killing the varroa destructors and is low in toxicity on the bees, and the bees are not hurt while the varroa destructors are killed; the medicine is wide in source, easy to prepare, convenient to use, and high in volatility, and is particularly suitable for preventing and controlling the varroa destructors by fumigation.

The invention discloses a Varroa destructor toxic protein and a coding gene thereof, and application thereof. According to the invention, the novel coding gene VMP of the Varroa destructor toxic protein VMP is cloned from the genome of Varroa destructor; an expression product of the coding gene, i.e., the Varroa destructor toxic protein VMP, has toxic effect on honeybees; thus, the Varroa destructor toxic protein VMP and the coding gene thereof can be applied to lethal drugs for honeybees. Moreover, conditions are created for basic scientific research on the mechanism of harm to honeybees by the Varroa destructor.

Miticide composition of prolonged action against Varroa destructor of bees comprising oxalic acid, glycerin, 4-carbon dicarboxylic acid and formic acid and its manufacturing process. A cellulose trip impregnated in said miticide composition, which is introduced in the bee hives and its manufacturing processes.

A composition and method for treating a Varroa mite infestation using a sexual pheromone for disrupting the mating behavior of the Varroa mite. Additionally, a pesticide for applying to a mating place of the Varroa mite for disrupting the mating behavior of the Varroa mite.

Nucleic acid agents for reducing or removing infestations of the Varroa destructor mite are described. Compositions comprising the nucleic acid agents and methods for controlling mite infestations using the nucleic acid agents and compositions are also disclosed.

The invention provides a composition for preventing and controlling varroa destructor, which consists of honey, edible oil, beewax and medical vaseline. The composition is prepared into a bee bait cloth strip which is placed on a swarm frame beam, and the bee bait in a bee hive is continuously supplied so as to effectively control varroa destructor in the swarm. According to the invention, honey and beewax are used as bait to induce bees, and the edible oil, vaseline and talcum powder are used as lubricants; and when the bell-shaped pulvillus at the tail end of varroa tarsus contacts with thebee body lubricated by the bee bait, the adsorption effect is lost due to the lubrication and the varroa drops so as to remove varroa and control the varroa damage. The composition provided by the invention adopts a physical method to remove varroa without chemical medicines, and does not hurt bees, influence swarm reproduction or stain the bee product and the like.