JPS5839093Y2 - Fixed net - Google Patents

Description

[Detailed explanation of the invention] Conventional fixed nets consist of fence nets that guide fish and multiple stages of corral nets, and the nets are connected by wire nets or funnel nets, and the fish guided by the fence nets. The fish were guided through a funnel net using a wire net, and allowed to swim from the exit to the next stage of the net, where they were captured by settling on the final stage of the net and various fishing nets attached to it. .

However, in conventional fixed nets, the migratory direction of fish that die in the encircling net is perpendicular or oblique to the exit surface of the funnel net, so few fish settle in the encircling net, and as shown in Figure 3, the migration direction of fish that die in the encircling net is perpendicular or oblique to the exit surface of the funnel net. Many fish returned to the net and escaped to the ocean again, and the percentage of fish that settled in the final stage of the net was quite low.

The present invention aims to solve these drawbacks and provide an excellent stationary net that allows for good fish retention, greatly improves the fish catch rate, and also eliminates the need for wire netting.

The gist of this invention is that it consists of a fence net for guiding fish and a multi-tiered encircling net, and a fixed net is connected between the enclosing nets by a funnel net. The fixed net is characterized by having a pot net installed therein.

In the figure, 1 is a fence net, 2, 2', 2' is a fence net, 3゜3'
is a funnel net, 4 and 4' are acupoint nets, and 5 is a tension lobe.

6 is the playing field of the second-stage enclosure net 2', and 7 is the Otoshi net.

In this device, the fish are guided by the net 1, enter the playing field of the first net 2, and move from the exit of the funnel net 3 to the next net 2', but the playing field of the second net 7 is The nets 4゜4' installed on the left and right ropes at the exit of the net 3 spread the wings to the left and right as shown in Figure 2, making it easy for fish to migrate and allowing them to move into the funnel. In the vicinity of the net 3, the fish will move parallel to the exit surface of the funnel net 3 or in a direction away from the exit surface. There is very little movement and the return to the first enclosure 2 is significantly reduced.

Therefore, the retention rate of fish that enter the second encircle net 2' is high, and the fish that enter the second encircle net 2' move from the funnel net' exit to the third encircle net 2. They are captured by the encircling net 2 and the Otoshi net 7.

A part of the fish is also captured by the pot nets 4, 4' provided in the second encircling net 2'.

According to the present invention, by providing the pot net on the left and right sides of the outlet side net of the funnel net, the playing field becomes in a state where the wings are spread to the left and right, which not only makes it easier for fish to migrate. , the number of fish returning from the funnel net exit is greatly reduced, and the pot net functions as a fish return, increasing the retention rate of fish that fall into the pen net, and making it possible to catch more fish with the pot net itself. It has the excellent effect of being able to greatly reduce the catch rate to 0 compared to the conventional method, and also eliminating the need for a wire mesh for the funnel net, making it possible to reduce the cost.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the fixed net of the present invention, FIG. 2 is an explanatory diagram showing the migratory direction of fish of the same invention, and FIG. 3 is an explanatory diagram showing the migratory direction of fish in a conventional encircling net. 1...Fence net, 2,2', 2'...Fence net, 3,3'・
... Joko net, 4,4'... Pot net, 5... Tension rope, 6... Playground, 7... Otoshi net.

Claims (1)

[Scope of utility model registration request] It consists of a fence net to guide the fish and multiple stages of encircling nets, and a fixed net is connected by a funnel net between the enclosing nets, and a pot net is installed at each of the left and right net portions of the exit of the funnel net of the middle encircling net. A fixed net characterized by: