JPS6224050B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fish reef used for the propagation, collection, and rearing of fish and shellfish, and more specifically, for spawning of fish, crustaceans, shellfish, and other fish and shellfish (hereinafter simply referred to as fish and shellfish, etc.). , hatching, protection, rearing and multiplication of juveniles, and fish reefs used for growing seaweed beds.

Conventionally, various artificial reefs have been proposed and implemented as apartments for fish in order to catch seafood and the like. These artificial reefs gather grown fish and shellfish to form fishing grounds, thereby increasing fishing efficiency. These reefs are especially called fish reefs, and are usually inhabited by growing fish and shellfish.
In other words, they are usually submerged on the ocean floor at a depth of 20 meters or more. In addition, many types of reefs for collecting fish are made from industrial waste such as old ships, old cars, and old tires, but recently, reefs for collecting fish are made of box-shaped, lattice-shaped, etc. made of concrete, steel, stone, synthetic resin, etc. It is also constructed as an assembled and molded product.

However, in recent years, due to problems such as the depletion of marine resources, there has been a call for the need for fish reefs for the purpose of protecting and raising fish and shellfish eggs and juveniles during their floating life, in addition to reefs for collecting fish and shellfish.

However, fish collection reefs are sunk on the seabed at a depth of 20 meters or more and have been developed simply to collect mature fish and shellfish, and it is difficult to use them as is for propagation and cultivation. In other words, in order to create a habitat and protection environment suitable for the protection and rearing of young fish, fish reefs must be built in a relatively shallow place at a depth of about 7 to 15 meters, so that they can be protected from rough waves and ocean currents. In addition to being exposed to the environment, it is necessary to have a suitable structure for attaching eggs and growing young, and in addition, it is suitable for the attachment and breeding of diatoms and microorganisms because it easily absorbs natural light. It is necessary.

In short, in order to propagate and grow, (1) the shape and structure are suitable for the settlement and habitation of diatoms and other food organisms, and the structure allows for quick settlement and habitation, (2) spawning and young larvae. (3) The structure must be suitable for the establishment of young children, etc., where they can escape from external predators, and provide continuous rest and residence; (4) The structure must be suitable for the establishment and settlement of young children, etc., without exposure to sunlight. Since it is only carried out in shallow water (wave breaking zone) at a depth of about 7 to 15 meters, the structure must be strong enough to withstand external forces, have a long service life, and maintain stability. is necessary.

Therefore, it is difficult to use conventional fish reefs for the purpose of protecting and raising young fish, and furthermore, in order to propagate and raise fish and shellfish, it is necessary to have the ability to grow algae. In addition, the cultivation of this algae makes it even more effective to collect floating eggs and seedlings of floating animals, and to protect and raise young children.

From this point of view, the present inventors have conducted research on fish reefs that are suitable for protecting and nurturing eggs and young fish such as fish and shellfish, and that are strong enough to withstand harsh wave conditions and ocean current conditions in shallow waters. As a result, it was found that a fish reef consisting of protrusions such as fibers protruding from at least a portion of the surface of a base material is extremely effective. However, this fish reef has problems in the formation and retention of protrusions such as fibers, and improvements are desired.

The present invention aims to solve the above-mentioned problems. Specifically, the present invention is suitable for the growth, protection, and nurturing of seafood eggs, young larvae, etc., and is capable of easily raising fibers on the surface of a base material. At the same time, these fibers can be firmly held onto the base material, and the fish reef is proposed to have sufficient strength to withstand severe wave conditions such as those found in shallow waters and ocean currents.

That is, the present invention is characterized in that, in a fabric including a floating yarn such as a pile woven or knitted fabric or a satin fabric, a raised portion is formed by raising or cutting the floating yarn.

Hereinafter, the present invention will be explained in detail based on the drawings.

First, FIG. 1 is a cross-sectional view of a fish reef according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view of one of the ways in which the fish reef is used. 1 shows a fish reef according to two embodiments. This fish reef 1 consists of a base material part 2 and a raised part 3, and the raised part 3 is formed on at least a part of the surface of this base material part 2.

That is, fabrics such as pile woven and knitted fabrics and satin fabrics have floating yarns on the surface, and these floating yarns are held by the base fabric. Therefore, when this floating yarn is raised or cut into a raised state, a raised part 3 is formed, and the base material part 2 is formed by the base fabric.
is formed.

To explain in more detail, first, the floating threads in the pile woven or knitted fabric are firmly fixed with resin processing so that they do not come off, then they are raised or cut using a napping machine and a cutter, and then the raised part is brushed to make the napping. state, and the raised part 3 is in the raised state.
is fixed with resin. If a fish reef is constructed from the base material part 2 made of the base fabric and the raised part 3 made of floating yarn using pile woven or knitted fabric in this way, it can be mass-produced very easily, and the length of the raised part can be changed to the length of the pile or floating yarn. It can be easily adjusted by controlling the intensity. In this case, the raised part 3 can be made to have some degree of rigidity by resin processing, etc., but it is preferable that seaweed etc. adhere to it and it will not be bent under the sea. Therefore, as shown below, any of synthetic fibers, natural fibers (including animal fibers), and carbon fibers may be used, but it is preferable to select the type of fiber depending on the properties of the seafood. First, fish such as sea bream and flounder, shellfish such as abalone, turban shell, bivalves, and red shells, and skins such as sea urchin and sea cucumber are preferably flexible. Relatively flexible synthetic fibers made from flexible vegetable fibers, animal fibers such as rabbit, sheep, cat, and silk, and resins such as polyester, polyamide, acrylic, vinyl, polyolefin, and polyethylene. Recycled synthetic fibers such as , rayon, acetate, etc. are preferred. Next, it is preferable that crabs, shrimps and other crustaceans, cypress algae and other algae, and squid and other cephalopods have relatively high rigidity, such as rigid animal fibers obtained from palm trees, tree roots, etc. Relatively rigid synthetic fibers made from rigid animal fibers such as body hair of pigs and boars, horse tail hair, and animal whiskers, and resins such as polyester, polyamide, acrylic, vinyl, polyolefin, and polyacetal. Fibers are preferred. Furthermore, silica or calcium carbonate can be attached to these fibers to impart epiphytic properties and properties to prevent eggs, infants, diatoms, and food organisms from falling off. In addition, the dimensions of each fiber in the raised part cannot be made too long because it is made by raising or cutting pile or floating yarn.
It is preferable to select according to the characteristics of the fish and shellfish. For example, in the case of shellfish, clean skins, and fish, the fiber degree is preferably 100 to 2000 denier x 5 to 20 mm, and in the case of crustaceans, 300 denier is preferable. ~10000 denier x 30~
A long one such as 300 mm is preferable, and in the case of cephalopods, a length of 300 to 10,000 deniers x 5 to 100 mm is preferable.

Furthermore, the cross-sectional shape of each fiber in the raised part may be any shape, but it is usually round, round, star-shaped, or round.
Hollow shapes, polygonal shapes, and other irregular shapes are preferred.

Next, the base material portion 2 is usually made of a base fabric of pile woven or knitted material, and it is sufficient that each fiber thereof is composed of the above-mentioned fibers.

Further, although the fish reef having the above structure can be used alone or in combination, it is usually used by being attached to a substrate, foundation 4, etc. as shown in FIG.
This substrate or foundation does not necessarily have to be formed into a plate shape as shown in FIG. 2, but can be formed into any shape. In addition, even if the structure is complicated, the reef with the above structure can be bonded to the surface of a complex-shaped foundation because the base material is made of cloth, etc., and can be used as a reef for a variety of purposes. .

As explained in detail above, the present invention involves raising or cutting floating threads or piles of pile woven and knitted fabrics, etc., and attaching and growing eggs of fish and shellfish, etc. in the raised part, and the length of the raised part. can be easily adjusted and mass-produced, and since the raised part is woven into the base fabric, it does not easily come off. Furthermore, the above effect can be further enhanced by fixing the raised portion with a resin and maintaining the raised state of the raised portion with the resin.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a fish reef according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view of an example of how the fish reef is used. Symbols 1...Fish reef, 2...Base material portion, 3...Raised portion, 4...Substrate.

Claims (1)

[Claims] 1. Fabrics with floating yarns such as pile woven and knitted fabrics, satin fabrics, etc., which are characterized by forming a raised part by raising or cutting the floating yarns, and which are used for the propagation, collection, and cultivation of fish and shellfish. A fish reef that is exposed.