Ampullaria gigas spix trapping device

Abstract

The invention relates to an ampullaria gigas spix trapping device. The ampullaria gigas spix trapping device comprises a trapping cage, a floating ring and a collecting net; the trapping cage comprises a cage framework and one-way movable doors; the top of the cage framework is closed, the circumferential side wall of the cage framework is evenly provided with movable door mounting ports, and thebottom of the cage framework is provided with an opening; the one-way movable doors are arranged at the movable door mounting ports and cooperatively hinged to the movable door mounting ports; the inner portion of the floating ring is hollow, the floating ring is cooperatively fixed at an opening edge of the bottom of the cage framework, and the floating rings enables the trapping device to floaton the water surface; the upper net edge of the collecting net is fixed on the floating ring, and a hopper-shaped inner net is arranged in the collecting net from the upper net opening; the upper netopening of the inner net is communicated with the upper net opening of the collecting net, and the lower net opening of the inner net is communicated with the collecting net. The ampullaria gigas spixtrapping device has the advantages that the structural design is simple and reasonable, the operation and use are simple and convenient, the trapping effect is good, the efficiency is high, the device is durable, and the water environment is not polluted.

Description

technical field [0001] The invention belongs to the fields of aquatic animal trapping and fishery, and in particular relates to a trapping device for Fushou snails. Background technique [0002] Fushou snail is native to the Amazon River Basin in South America. It was first introduced into mainland my country as an aquatic economic animal. After 1984, it began to be widely cultivated in Guangdong, Guangxi, Fujian and other places, and then spread to Zhejiang, Jiangxi, Yunnan, Sichuan and other places. . Later, due to the failure of marketization, Fushou snails were abandoned and spread rapidly, resulting in outbreaks of disasters, which seriously endangered crop production. At present, it has become a serious agricultural pest in most provinces south of the Yangtze River. In 2000, the Expert Committee on Invasive Alien Species of the International Union for Conservation of Nature (IUCN) listed the snail as one of the 100 malignant invasive alien species in the world, and it...

AI Technical Summary

Problems solved by technology

[0008] (1) The trap only has an entrance at one end, and the other four sides are closed. The apple snail can only enter from one end, and the trapping efficiency is low;

[0009] (2) While the trap is trapping apple snails, other fish, loach, shrimp and other aquatic animals will also enter the device. If it is not taken out in time, it will easily cause a large number of aquatic animals to die and cause certain harm to the ecosystem;

[0010] (3) The trap must be placed underwater to work. When the water level drops below the device, the device is exposed on the ground and cannot play the role of trapping at all, and the aquatic animals that have been trapped will die due to lack of water. , causing certain harm to air and water quality;

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