5 results about "Midge" patented technology

The invention discloses a field capturing, short-term storing and feeding device for blood sucking midges and a using method thereof. The device is composed of a living body maintaining pipe, a sealing cover and a base. The living body maintaining tube is placed on the base; and a sealing cover is arranged at the top of the living body maintaining tube. The use method comprises the following steps: capturing living blood sucking midges in the field by utilizing the capturing state of the device; the device is converted into a feeding state, that is, a rubber plug fixed with an insect inlet unit and an air suction unit is removed, and a threaded semi-sealing cover with a feeding filter screen is installed; nutrient solution is provided for the gnat in the living body maintaining pipe through the feeding filter screen. The field catching, short-term storage and feeding integrated device overcomes the defects that an existing blood sucking midge collecting device cannot give consideration to the high catching rate, the high survival rate and the short-term storage and feeding function, and is simple in structure, convenient and fast to operate and capable of remarkably improving the survival rate of gnat from the catching stage to the laboratory stage.

This invention provides the application of compounds in attracting or controlling midges, relating to the field of midge control technology. Through screening and identification, this invention has obtained five compounds (butyric acid, butyraldehyde, propionaldehyde, 2-hexanone, and acetophenone) with significant attractant activity against Formosan midge. These compounds can be used alone or in combination, are environmentally friendly and have a high affinity for non-target organisms, greatly enriching the candidate resource of midge attractants. They can be directly applied to the monitoring and large-scale trapping of midges, effectively reducing midge population density, thereby reducing midge bites and the spread of midge-borne diseases, which has significant public health implications.

The invention provides a blood-sucking midge efficient repellent and a screening and identifying method thereof, and relates to the technical field of biology. According to the invention, an odor receptor gene FtaiOr1 which is highly expressed at the head of a female gnat is obtained through identification, and a transgenic drosophila melanogaster strain Or22ab- / -GAL4 which can be used for screening a blood-sucking midge repellent compound is constructed through heterologous expression of the gene in a drosophila melanogaster ab3A neuron; and UAS-FtaiOr1 (UAS-FtaiOr1). Six blood sucking midge repelling compounds (camphor, eudesmol, (+)-anisone, alpha-terpilenol, (S)-cis-verbenol and isoterpinene) are obtained by screening of the fruit fly strain. The compounds can be used independently or in a compounded manner, are friendly to non-target organisms and environment, can be directly applied to repelling and on-site prevention and control of blood sucking midges, and have important application value in the aspects of reducing midge bites and reducing the propagation risk of entomophilous diseases.

The application discloses a culture device for Mesocyclops leuckarti and application thereof, and belongs to the technical field of fish culture. The culture device for Mesocyclops leuckarti comprises a cylinder, a top cover and a bottom cover, the top cover is movably connected with the top of the cylinder, and the bottom cover is fixedly connected with the bottom of the cylinder; a collecting pipe is arranged in the cylinder, the upper portion of the collecting pipe is a silk screen, the lower portion of the collecting pipe is a closed pipe, and a first light source is arranged in the collecting pipe; a second light source and a third light source are arranged on the inner side of the cylinder, and a temperature regulator and an oxygenator are arranged on the lower portion of the inner side of the cylinder. The culture device can realize large-scale continuous high-density culture of Mesocyclops leuckarti, can be applied to preparation of a biological prevention and treatment device for fish white spot disease, can reduce the abundance of water body Paramoecium caudatum and thus reduce the probability of fish suffering from the white spot disease, can provide other food sources for the fish, is beneficial to growth and development of the fish, and enriches the aquatic food web.

The application discloses a Heterodera avenae pathogenic gene TaEMB3003 and application thereof. The Heterodera avenae pathogenic gene TaEMB3003 is a gene encoding a TaEMB3003 protein shown in SEQ ID NO:1. The application also protects the application of the Heterodera avenae pathogenic gene TaEMB3003 as an inhibition target in improving the resistance of plants to Heterodera avenae. The application has important guiding significance for the breeding of wheat nematode-resistant varieties and can be used for genetic engineering breeding.