Portable fish larvae fluorescent capture device

Abstract

The invention discloses a portable fish larvae fluorescent capture device, which comprises a floater, a top plate, a main container, a fluorescent rod, a fluorescent rod protective tube, a bottom plate, a hopper, weights and a nylon rope, wherein same corner holes are dilled at corresponding corners of the floater and the top plate; the floater and the top plate are connected through the nylon rope; the center of the top plate is drilled to form a fluorescent rod protective tube inserting hole; the upper end of an organic glass cylinder is adhered below the top plate and the lower end of the organic glass cylinder is adhered on the bottom plate; gaps are reserved between adjacent cylinders; soft pricker bars are adhered along edges of the gaps; any two opposite angles of the bottom plate are drilled to form weight connecting holes; the upper end of the external threads of the hopper is adhered to the periphery of a center hole of the bottom plate on the lower part of the bottom plate;and the lower end of the internal threads of the hopper is plugged by a hopper plug covered with a mesh to seal the bottom. The capture device is reasonable in structure, easy to manufacture, low in cost and convenient to use, and is particularly suitable for collecting fish larvae in different water depths and complicated aquatic habitat water during scientific research.

Description

technical field [0001] The invention relates to the technical field of fish light trapping, and more specifically relates to a portable fluorescent trapping device for larvae and juveniles. The device uses a fluorescent stick as a light source to trap larvae and juveniles of different specifications inhabiting water bodies of different water depths and complex habitats. The portable fluorescent trapping device for larvae and juveniles is mainly suitable for scientific research experiments. Background technique [0002] Through the investigation and research on the amount of early fish resources, not only the distribution of fish spawning grounds and early habitats, the number of early resources, and the growth and development of early individuals can be obtained, but also the number of fish breeding populations can be estimated, and fish populations can be predicted. It is of great significance for the protection, rational development and utilization of fish resources to ana...

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Problems solved by technology

People use this habit of fish to design a variety of traps, for example, "manufacturing method of fish traps (ZL02136581.4)", "sea surface LED light trapping fish cages (ZL200810199134.5)" and "digital video screen Fishing tackle (ZL200610121775.X)" has the advantages of large catch capacity and high catch efficiency, but they often have the following problems in practical application: 1) they are only suitable for fishing large-scale fish, and the catch efficiency for juvenile fish Low; 2) If the light trapping device is equipped with a lighting power supply and a voltage stabilizer, its production, operation and maintenance costs are high; 3) Due to the complex structure and large volume and weight, it is inconvenient to carry

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