Medusa trawl used for protecting fishery resources

Abstract

The invention discloses a medusa trawl used for protecting fishery resources. The medusa trawl comprises a trawl, an end opening of the trawl is connected with an annular pipe, the surroundings of a circular ring of the annular pipe are fixedly connected with the trawl, and the interior of the trawl is provided with a cutting device; the middle position of the cutting device is provided with a movable mechanism, the tail part of the trawl is connected with a net bag, a mesh size of the trawl is smaller than an internal gap of the cutting device to prevent captured medusas from escaping from the side surface of the trawl, the side wall of the top of the annular pipe is provided with a water inlet pipe, and the annular pipe is connected with the water inlet pipe through a water pump to pumpwater to the interior of the annular pipe. According to the medusa trawl disclosed by the invention, when pressure of the interior of the annular pipe rises, the annular pipe becomes a quadrilateral structure, so that automatic switching of a shape of the annular pipe can be realized; the cutting device can cut the medusas to be small, and at the same time fish and shrimps in the medusas are released; at least one escaping opening is arranged in one side, close to the annular pipe, of the connection position of the cutting device and the trawl, the fish and the shrimps escape through the escaping opening, so that sustainable development of the fishery resources is realized; and two sides of the bottom of the trawl are connected with sinker rings at intervals along a length direction of thetrawl, so that drawing of the trawl is facilitated.

Description

technical field [0001] The invention relates to a jellyfish trawl, in particular to a jellyfish trawl for protecting fishery resources, and belongs to the field of fishing gear and fishing methods. Background technique [0002] Jellyfish is an important plankton in the aquatic environment. It belongs to the class of cnidaria. Jellyfish is a very beautiful aquatic animal. Its body shape is like a transparent umbrella, and the diameter of the umbrella-shaped body varies from large to small. However, with the pollution of the marine environment and the eutrophication of water bodies, jellyfish has gradually evolved into a harmful and disaster-causing organism. Jellyfish blooms can have serious adverse effects on marine ecosystems. Marine fishery resources are the most direct victims of jellyfish outbreaks. At present, there are many inventions and technologies dedicated to fishing or removing jellyfish in the ocean, such as: application numbers: 201310192373.9 and related tec...

AI Technical Summary

Problems solved by technology

However, the above-mentioned technologies only realize the fishing or removal of jellyfish, and do not take into account the factors of protecting fishery resources

Therefore, the above-mentioned technology has great limitations, and the water area used also has certain restrictions.

Especially when jellyfish outbreaks occur in fishery resource protection areas or fishery resource nurseries, if the above-mentioned technology is applied, fishery resources will also be severely damaged while eliminating jellyfish, seriously affecting the sustainable development of fishery resources

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