JPS5841827Y2 - seine net - Google Patents

Description

[Detailed explanation of the invention] This invention relates to a seine that allows fish of a plurality of species to be caught inside the main body of the seine to allow by-catch prohibited fish to be taken outside and only target fish to be caught.

Since the 200 nautical mile exclusive zone became an international trend, Japan's seine fishing industry has been forced to operate within each country's 200 nautical mile zone while being subject to regulations such as fishing quotas, entry fees, and fishing fees.

This means that the traditional trawling fishery, which was a predatory type fishery that overfished marine resources, is now transitioning to a resource management type fishery that manages the fishery to maximize the sustainable catch of each resource. It also shows.

In particular, with regard to continental shelf fishery resources, each country is promoting the protection and regulation of fish and shellfish as indigenous fixed resources, and it is inevitable that Japan's seine fishing industry, which uses the continental shelf as its main fishing ground, will be fatally affected.

Therefore, with conventional seine nets, the greatest effort has been made to catch as many fish as possible without allowing the schools of fish surrounded by the net to escape. Even if only a school of fish were to be captured and a school of other fish species were to enter the net, it would be necessary to quickly assemble the net so that it could be expelled to the ocean.

From this point of view, improvements have been made to seine nets.

Most of these conventional improved seine nets have a structure that physically prevents them from entering the seine net.

However, when we investigated the habits of Maebara, we found that they form schools of fish depending on the species, and these schools of fish live in slightly different layers. It was also found that there are layers.

Moreover, although the distinction between prohibited bycatch fish and target fish is based on the species of fish, these fish species often live in very close layers.

Therefore, this idea was developed by installing a partition net that divides the inside of the main body of the seine into two upper and lower stages, opening the inner part of either the upper or lower part of the partition, and closing the other part to catch the target fish. The purpose of this product is to provide a seine that allows only target fish to be caught by guiding fish into the fishing section with the inner part closed, and guiding prohibited bycatch fish from the open part to the fishing section. be.

Now, one embodiment of the seine net according to this invention will be described based on the drawings. 1 is a trawl type seine body;
2 is for dividing the inside of this seine main body 1 into upper and lower two stages.
This is a partitioning net arranged at the rear inside the seine main body 1.

This partitioning net 2 forms two upper and lower chambers in a part of the main body 1 of the seine, and an opening 3 is provided at the back of one of them.
In addition, a closing part 4 is formed in the inner part of the other one.

In the illustrated embodiment, the opening 3 is located at the back of the upper stage and the closing part 4 is located at the rear of the lower stage, but the vertical relationship may be reversed.

A fish catching portion 5 is formed on the side where the closing portion 4 is formed.

Therefore, the opening 3 is
Use with the side facing up or down.

This is determined by the species of fish, but
For example, even when the opening 3 is placed upward as shown in FIG. 1, various fish species enter the seine main body 1 through the net opening 6.

Then, just as there was a layer of fish species before entering the seine net body 1, a layer of fish species is formed in the seine net body 1 in this way.

In this case, since it is assumed that the fish species in the upper layer are prohibited by-catch fish, these prohibited by-catch fish are directly led to the inner part of the seine net body 1 and the partition net 2.
The material is discharged from the opening 3 to the assembly method while being guided by the material.

On the other hand, the fish to be caught are present in the lower layer of the seine net body 1, and are guided to the inner part of the seine net body 1, and are stored in the fish catching section 5 in the 4 directions of the closure part while being guided by the lower part of the seine body 1 and the partition net 2. It will be done.

As mentioned above, the seine according to this invention has an extremely simple structure, but it guides only target fish to the fishing section, and even if fish that are prohibited as bycatch are caught in the net, they are not allowed to enter the net. This has the effect of allowing it to be discharged.

[Brief explanation of drawings]

The drawing is a sectional view showing an embodiment of the seine net according to this invention. 1... Seine main body, 2... Partition net, 3.
...Opening part, 4...Occluded part, 5...
... Fish catching department, 6... Net mouth.

Claims (1)

[Scope of utility model registration request] A partition net is installed to divide the inside of the seine body into two levels, upper and lower.
1. A seine net characterized by having one of the upper and lower partitions open at the back, and the other partition closed.