Emergency shrimp fishing purse net and use method therefor

Abstract

The invention discloses an emergency shrimp fishing purse net and a use method therefor. The emergency shrimp fishing purse net comprises a plurality of netting sheets and air bags arranged at edges of single sides of the netting sheets, wherein a plurality of sinkers are arranged at single sides, symmetric to the air bags, of edges of the netting sheets and are distributed at intervals; a plurality of grooves are formed in the air bags at intervals along a length direction, a hauling cable is arranged at end parts of the air bags, a free end of the hauling cable is connected with a tractor tug, and the tractor tug can drive the netting sheets to move to form an encircled space; at least one light source member are arranged on a water surface in the encircled space and are at least partially arranged below the water surface, and floating members are arranged on the light source members and can be used for adjusting a ratio of a water-surface upper part to a water-surface lower part ofeach light source member; and monitoring members are arranged at bottoms of the light source members, and the quantity of shrimps in a water area below the light source members can be monitored through the monitoring members.

Description

technical field [0001] The invention relates to a fishing seine, in particular to an emergency hairy shrimp fishing seine and a use method thereof. Background technique [0002] Hairy shrimp is a large zooplankton in the plankton group. It is widely distributed in the Indian Ocean, the Pacific Ocean and the Atlantic Ocean. It is also distributed along the coast of China. Hairy shrimp has important economic value and is an important fishery target. It is often used to produce shrimp skin and shrimp. Sauce and other products, in recent years, due to the impact of global climate change, there is an explosive trend of hairy shrimp appearing in some offshore areas. The explosive appearance of hairy shrimp will pose a huge threat to the safety of water areas. In order to avoid the occurrence of disasters, it is necessary to fish the explosive hairy shrimp. However, due to the extremely small size of the prawns, the technical parameters of the nets for catching the prawns have ver...

AI Technical Summary

Problems solved by technology

However, due to the extremely small size of the prawns, the technical parameters of the nets for catching the prawns have very high requirements. Marine organisms are fished together, which destroys the existing food chain, and at the same time affects the reproduction of other marine organisms, which affects marine biological resources and the sea environment to a large extent. In the water area, the nets are enclosed by a towing boat in the later stage to form an enclosing space. During the enclosing process, the hairy shrimps are first induced to gather through the light source, and the maximum fishing efficiency of the hairy shrimps cannot be achieved.

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