JP2002360105A - Artificial spawning bed for bigfin reef squid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To culture a bigfin reef squid or develop a new fishing ground for the bigfin reef squid by providing an artificial spawning bed for the bigfin reef squid. SOLUTION: This artificial spawning bed for the bigfin reef squid is characterized by fixing the lower end (1a) of a cage body (1) composed of carbon fiber strings to the bottom (3) of the sea and mounting a float (5) onto the top (1b) of the cage body (1). Furthermore, the cage body (1) is obtained by arranging an inner cage (13) composed of the carbon fiber strings in the interior of an outer cage (11) composed of the carbon fiber strings.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial egg laying bed of a blue squid.

[0002]

2. Description of the Related Art It has been known that Aolika squid lays eggs on the grass submerged on the sea floor.

[0003]

AOika is a valuable food material, and it is desired to cultivate Oika and to develop a new fishing ground for Oika. In order to satisfy such a demand, it is necessary to create an artificial spawning bed for Aoliika.

[0004] Under such circumstances, the present invention has been made to provide an artificial egg laying bed for Aori squid.

[0005]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventor has found that a blue squid lays eggs on carbon fibers. That is, the present invention provides an artificial egg laying bed for a squid, wherein the lower end of a cage made of carbon fiber strings is fixed to the seabed and a float is attached to the upper end of the cage. Things.

[0006] The basket body is formed by disposing an inner basket made of carbon fiber strings in an outer basket made of carbon fiber strings.

[0007]

According to the first aspect of the present invention, when the lower end of the basket in the artificial laying squid bed is fixed to the seabed, the basket body has a lift at the upper end and thus stands up. Since the cage body is made of a carbon fiber string having high affinity for living organisms, the cage body eventually forms a seaweed bed when the cage body is disposed in the sea in this way. The squid enters the cage made of carbon fiber strings and lays eggs in the cage. Since fish and the like are unlikely to enter the cage body that has become a seaweed bed, the squid eggs grow in a protected state within the cage body and eventually hatch.

[0008] [2] Artificial egg-laying bed of the blue squid of the present invention Since the cage body has a double structure of an outer cage and an inner cage, the eggs in the inner cage are more reliably protected from fish and the like.

[0009]

Next, embodiments of the present invention will be described with reference to the accompanying drawings. In the artificial spawning bed of the squid according to the present invention, a lower end 1a of a cage 1 made of carbon fiber string is fixed to the seabed 3, and a float 5 is attached to an upper end 1b of the cage 1. The lower end 1a of the cage body 1 is fixed to the seabed 3 via a string 7 as an example. A float 5 is attached to the upper end 1b of the basket 1 via a string 9 as an example.

In the case shown in FIG. 1, the cage body 1 has an outer basket 11 made of carbon fiber strings and an inner basket 13 made of carbon fiber strings.

As an example, the outer basket 11 has a plurality of vertical cords 17 made of a carbon fiber string fixed at predetermined intervals around an outer periphery of a horizontal annular body 15 made of metal or synthetic resin. It is assumed that the upper end and the lower end of 17 are bound together. The annular body 15 is, for example, the central annular body 1.
5a and upper and lower annular bodies 15b and 15c are provided in total of three. The central annular body 15a is, for example, about 10 mm thick,
The diameter of the ring is about 1 m. The upper and lower annular members 15b and 15c have, for example, a thickness of about 10 mm and a ring diameter of about 70 cm. The thickness of each vertical cord 17 is, for example, 1 to 10 mm. Vertical string 17
The distance between the vertical string 17 and the vertical string 17 is, for example, about 5 cm.

As an example, the inner basket 13 is formed by fixing a plurality of vertical cords 21 made of carbon fiber cords at predetermined intervals around an outer periphery of a horizontal annular body 19 made of metal or synthetic resin. It is assumed that the upper end and the lower end of 21 are bound together. The annular body 19 of the inner cage 13 has a thickness of, for example, about 10
mm and the ring diameter is about 50 cm. The thickness of each vertical cord 21 of the inner basket 19 is, for example, 1 to 10 mm. The distance between the vertical cords 21 of the inner basket 19 is about 2.5 cm as an example.
And

The upper binding end of the vertical cord 17 of the outer cage 11 and the upper binding end of the vertical cord 21 of the inner cage 13 are fixed to each other to form the upper end 1b of the cage body 1. The lower binding end of the vertical cord 17 of the outer cage 11 and the lower binding end of the vertical cord 21 of the inner cage 13 are fixed to each other to form the lower end 1 a of the cage body 1.

The length from the upper end 1b to the lower end 1a of the cage body 1 is, for example, about 1.5 m.

As shown in FIG. 2, for example, a plurality of cage bodies 1 are arranged at intervals of, for example, 10 to 20 m.

When not in use, the basket body 1 is stored on land in a state of being folded flat as shown in FIG.

[0017]

According to the present invention, as described above, a blue squid enters a basket made of carbon fiber strings and lays eggs in the basket. The laid squid eggs are protected in the cage and eventually hatch. That is, according to the present invention, it is possible to produce an artificial spawning bed of the squid, so that the squid can be cultured or a new fishing ground for the squid can be developed.

[Invention of Claim 2] Since the cage body has a double structure of the outer cage and the inner cage, the eggs in the inner cage are more reliably protected from fish and the like.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an artificial egg laying bed of a squid according to the present invention.

FIG. 2 is an explanatory diagram showing an example of a state in which an artificial egg laying bed of the same squid is arranged in the sea.

FIG. 3 is a plan view showing a state where a cage body is folded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Basket body 1a Lower end 1b Upper end 3 Sea bottom 5 Floating 7 String 9 String 11 Outer basket 13 Inner basket 15 Ring body 15a Ring body 15b Ring body 15c Ring body 17 Vertical string 19 Ring body 21 Vertical string

Continued on the front page F-term (reference) 2B003 AA01 BB09 CC04 DD03 EE03 2B104 AA13 BA03

Claims (2)

[Claims] 1. An artificial spawning bed for a squid, wherein the lower end of a cage made of carbon fiber strings is fixed to the seabed and a float is attached to the upper end of the cage. 2. The artificial egg laying bed of a swollen squid according to claim 1, wherein said basket body is provided with an inner basket made of carbon fiber strings arranged in an outer basket made of carbon fiber strings.