JPH03206829A - Artificial algal fish bank for fishery - Google Patents

Abstract

PURPOSE:To install the title fish bank suitable for the spawning of fish and shellfish, usable for a long period of time without causing spoiling by connecting to a mooring object artificial algal weeds with such a makeup that stringy leaf axes are projected innumerably from strand-like stem axes and by putting the algal weeds underwater. CONSTITUTION:The objective artificial algal weeds consisting of the following elements: (a) artificial algal weeds 13 with stringy leaf axes 12 innumerably projected from continuous, flexible strand-like stem axes 11 are put underwater 14; (b) the stem axes 11 are made of continuous plastic filaments 16 interlaced forming a texture 15; (c) the leaf axes 12 are made of plastic filaments 17 held at the texture 15 of the stem axes 11; and (d) part of the continuous stem axes 11 is connected to a mooring object 18.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an artificial reef created in a fish farm or the like.

[Conventional technology]

# At landings and other places, a method is used in which aquatic plants cut from rivers are bundled and sunk to create fish reefs where fish and shellfish can spawn, and the fish and shellfish eggs are pulled up and scraped together with the aquatic plants.

When transporting large quantities of live seafood, large trucks carrying aquariums are used, but the tanks are equipped with oxygen supplementation equipment and other considerations necessary for the growth of the seafood. Not yet.

[Problem that the invention seeks to solve]

The aquatic plants traditionally used to catch fish and eggs are natural, so they cannot be harvested all the time, and it is difficult to store them.
It cannot be used for a long period of time because it corrodes easily.

On the other hand, in aquaculture farms, aquariums, etc., it is not possible to release too many fish and shellfish because they are easily damaged by bumping into each other or rubbing against each other.

[Purpose of the invention]

Therefore, the present invention provides a method for spawning fish and shellfish, so that the fish and shellfish eggs can be easily caught, do not corrode, and can be used as a spawning ground for fish and shellfish over a long period of time, and do not interfere with the free swimming of fish and shellfish, and can be used in narrow spaces. To provide an artificial algae reef in which fish and shellfish are not damaged by colliding with or rubbing against each other even in an aquarium or the like.

[Structure of the invention]

That is, the artificial fishing algae reef according to the present invention consists of tall algae 1 with numerous filamentous leaf axes 12 protruding from a long and flexible string-like stem axis 11.
3 is submerged in water 14, and the stem shafts 11 of the plastic threads 1 intertwine to form threads 15 and continue for a long time.
6, the leaf axis 12 is composed of plasti/fiber threads 17 held by threads 15 of the stem axis 11, and a part of the long stem axis 11 is connected to a mooring object 18. That is.

The tall algae 13 is made using a sewing machine, a braiding machine, a warp knitting machine, a loom, a pile m knitting machine, etc., and the plastic threads 16 and 17 that make up the stem axis 11 and leaf axis 12 are covered with flat cross-section tape. It is best to use a wide tape yarn 16.1
7, it is preferable to use it by folding it so as to create vertical lines in the length direction or twisting it to converge it.

The protruding length of the leaf axis 12 from the stem axis 11 is 2 am or more and 10 cm.
It is best to set the following value, but when using wide tape yarn 17 with a width of 1 cm or more for the leaf axis 12, the width should be 10 cm* or less depending on the width.
It may be more than that.

The tape yarns 16 and 17 can be made by cutting a plastic film stretched in the length direction N into thin tape shapes, and may be provided with ridges 23 continuing in the length direction as shown in FIG. As shown in FIG. 7, it is preferable to provide a large number of slits 20 along the length direction N, which open in a mesh shape when tension is applied in the width direction.

To specifically explain the manufacturing method of the Saki Takagagusa 13, first, when using a sewing machine, a sewing stitch 15 is attached to a plastic tape or film using sewing thread 16, and then the plastic tape or film is attached to the left and right of the sewing stitch 15 using sewing thread 16.
6 into thin pieces in the direction perpendicular to the leaf axis 12 (Fig. 2).

In that case, the plastic tape or film may be in the form of a scattering, as shown in FIG. 2, and the machine stitches 15 may be either single chainstitch or lockstitch.

When using a braiding machine, one of the left and right threads 16 and 17 that intersect to form threads 15 is pulled out in a loop shape from the braided fabric to form a leaf axis 12, and the tip thereof is cut as appropriate.

There is a core 22 in the cylindrical braid fabric formed by the threads 16 and 17.
It is also possible to weave in (Figure 3).

When using a warp knitting machine, the needle bed of the warp knitting machine has a large number of knitting needles arranged in a horizontal row, and the weft yarns 11, which will become the leaf axes 12, are aligned parallel to the needle bed of the warp knitting machine and are fed for each stitch. It is entangled in the chain stitch 15 formed by the warp threads 10 that become the shaft 11 (FIG. 4).

When using a loom, the warp 16 is the stalk axis 11, and the weft 17 is the stem axis 11.
is woven as a leaf shaft 12.

In this case, at the base of the leaf axis 12 protruding from the stem axis 11,
It is preferable to arrange the warp threads 19 parallel to the warp threads 16 and form a thread weave structure such as a silk or gara with the weft threads 17, which become the leaf axis 12 (Fig. 5). It is best to use tenge-like filaments that are thinner than 12 (17), and their thickness (denier) is generally 12 (17) 10.
It is best to reduce the number of threads to about 1/2 or less, and of course, the threads of the entire stem axis should be
Needless to say, thin filament yarns 1- like the warp threads 19 may also be used for the threads 6.

The weave structure in which the stem axis 11 and leaf axis 12 are intertwined is not particularly limited, but when tape yarns 16 and 17 are used, it is preferable to use a plain weave structure as shown in the figure.

As shown above, the stem shaft 11 is formed by the sewing stitches 15 of the sewing thread 16 when using a sewing machine, by the braided area where the left and right threads 16 and 17 intersect when using a braiding machine, and by the warp threads 16 when using a warp knitting machine. In the case of a loom, it is constructed by a narrow cloth woven by threads 16 and 17, respectively.

〔Effect of the invention〕

(1) The tip-tall algae 13 forming the algae reef of the present invention is produced by using a warp knitting machine, a loom, a sewing machine, etc. to lengthen the stem axis 11 (,
Leaf axes 12 are precisely mass-produced and stably supplied regardless of the season.

(2) The artificial algae reef according to the present invention has a long stem axis
is formed by connecting a part of it to a mooring object 18 and placing it in water 14,
The seafood eggs spawned there are just a matter of pulling up the first high algae 13? i can be simply collected.

(3) Since the leaf axis 12 is densely formed from the flexible plastic threads 17, the fish and shellfish eggs can settle easily, and there is little chance of the fish and shellfish eggs falling out when the fish and shellfish eggs are pulled up.
Its yield is high.

(4) Since the leaf axis 12 is densely formed by the flexible plastic thread 17, the fish and shellfish 1121 will not be damaged even if they come into contact with it, and the fork is a cushioning material that partitions the fish and shellfish 21 and 21' from direct contact. This makes it possible to release large quantities of seafood into small aquaculture farms and transport tanks.

(5) On the other hand, the artificial algae 13 is not a steel-like material but a long string-like material, and is made of light plastic threads 16 and 17 (1B) that do not absorb water;
The plastic threads 16 that form the stem axis 11 form finely bent threads 15 that are long and continuous, making them highly flexible and easy to float in the water. Circulation and convection are promoted, and in particular, when the leaf axis 12 has a fine mesh of slits 20 as shown in the figure, sphagnum moss, etc., which are nutrients for seafood, can easily grow, and the implantation rate of seafood eggs can be further increased. It becomes a fish reef.

(6) Also, since fine dust in the water tends to adhere to the space between the leaf axes 12 and 12', if you pull it out when collecting seafood eggs, the water will also be purified.

As described above, the artificial algae reef according to the present invention is convenient for transporting a large number of fish and shellfish in a small aquarium without damaging them.
The present invention has many advantages, such as being able to be used as an underwater purification facility as well as aquaculture farms and spawning grounds.

[Brief explanation of drawings]

FIG. 1 is a front view of the artificial fishing algae reef according to the present invention, and FIGS. 2, 3, 4, and 5 are enlarged partial enlargements of the artificial algae forming the artificial fishing algae reef according to the present invention, respectively. Perspective view, No. 6
7 and 7 are partially enlarged perspective views of the tape yarn constituting the artificial algae according to the present invention. 11... stem axis, 14... underwater, 17... filament (weft) 20... slit, 23... furrow. 13--Artificial algae, 16--Thread (warp), 19--Long warp, 22--Axis, 12--Leaf axis, 15--Thread grain 1. 1B...Moored objects, 21...Seafood,

Claims (1)

[Scope of Claims] (a) An artificial fishing algae reef constructed by submerging underwater 14 artificial algae 13 with numerous protruding filamentous leaf axes 12 from a long flexible string-like stem axis 11; (b) The stem axis 11 is composed of long plastic threads 16 that intertwine to form threads 15, and (c) the leaf axis 12 is composed of plastic threads 17 held by the threads 15 of the stem axis 11. composed of (d) a long stem axis 1;
1 is connected to a mooring object 18. An artificial fishing reef characterized by: