JP2005287468A - Method and apparatus for releasing young shellfish - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for releasing seedlings of artificially produced aquatic life to water, with which the travel speed of seedlings is increased, the seedlings are quickly released and the releasing apparatus is recovered from underwater to prevent marine contamination. <P>SOLUTION: The method for releasing young shellfishes comprises a first means for providing the surface of a transparent plate material with a plurality of opening holes, forming a plate body having continuously formed ridges and valleys on the side view and previously attaching young shellfishes of abalone, turban shell, etc., to the plate body, a second means for arranging the plate body in a releasing basket constructed in the shape of a frame and a third means for conveying the releasing basket 1 to the sea, fixing it to the sea bottom in a predetermined fishing ground with attaching a mark such as a float, etc., to the releasing basket. The releasing apparatus is used for the releasing method. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

A first plate in which a plurality of opening holes are provided on the surface of the transparent plate to form a plate with continuous valleys as seen from the side, and abalone, tuna and other juveniles are attached to the plate in advance. Means, second means for disposing this in a discharge basin assembled in a frame shape, and third means for transporting the discharge basin to the sea, sinking it into a predetermined fishing ground, and fixing it to the seabed with marks such as floats The present invention relates to a method and apparatus for discharging juveniles characterized in that they are performed.

Technical background

By providing an attachment substrate in the seedling discharge container, the attachment of the larvae will be facilitated, the activity of the larvae will be slowed down, the discharge time will be delayed, and the larvae will be discharged in a state familiar with the discharge water area. The survival rate of juveniles can be further improved. (See JP-A-6-261650)

In addition, containers installed in the sea are made of steel ultra-thin plates or ultra-thin wire meshes, and are dissolved and consumed in sea water, so there is no need to recover after discharge, simplifying the discharge work. can do. (See JP-A-6-261650)

However, there was a problem that if the activity of the larvae was slowed down and the discharge time was delayed and the discharge device was installed in the sea for a long time, the discharge device was likely to be scattered in the sea where the waves were rough.

The law on the prevention of marine pollution and maritime disasters prohibits the discharge of waste from ships (Article 3, Article 10 of the Law on the Prevention of Marine Pollution and Maritime Disasters).

The released discharge device becomes waste and causes marine pollution.

The present invention has been made to remedy such disadvantages, and a plurality of opening holes are provided on the surface of the transparent plate material to form a plate body in which peaks and valleys are continuously provided when viewed from the side surface. , First means for adhering juvenile shellfish such as abalone and turban shell, second means for placing this in a discharge basin assembled in a frame shape, and marking the floats etc. A juvenile shell release method and a release device characterized in that the third means for fixing to the sea floor with a slash is performed. Then, in the discharge device that discharges artificially produced aquatic seedlings into the water, the characteristics of the aquatic products that move quickly from the light place can be used by producing the adherent substrate with a material with high light transmittance. It is possible to release seeds and seedlings quickly and quickly. Furthermore, it can be recovered by attaching a float.

A first means for forming a plate body having a plurality of opening holes on the surface of the transparent plate material and continuously forming peaks and valleys when viewed from the side, and pre-attaching juvenile shellfish such as abalone and tuna; Second means to arrange this in a discharge basin assembled in a frame shape and third means to carry the discharge basin to the sea and attach a mark such as a float to a predetermined fishing ground and fix it to the sea floor. It is characterized by.

In addition, a plurality of opening holes are provided on the surface of the transparent plate material to form a plate body in which mountains and valleys are continuously formed when viewed from the side, and abalone, tuna and other juvenile shellfish are attached in advance to this frame shape. It is necessary to use a juvenile shell release device characterized in that it is placed and fixed on a discharge basin assembled in the sea, and the discharge basin is marked and fixed to the seabed.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples with reference to the drawings.
As shown in the perspective view of the discharge device of FIG. 1, the discharge device accommodates the adhered substrate 2 in the discharge tub 1 described above.

The adhesion substrate 2 shown in FIG. 2 has a plurality of opening holes 3 on the surface of a transparent plate material made of a resin member such as plastic or a plant member such as bamboo, and has a continuous valley and valley when viewed from the side. It is formed by a plate body provided in a bent shape and is bent to a size to which the released larvae are easy to adhere, for example, in the shape shown in 2a to 2d.

As shown in the discharge rod 1 of FIG. 3, the discharge rod 1 is composed of metal members 1a to 1f. A lid is formed by connecting 1a and 1b by welding or the like. Moreover, 1d-1f is connected by welding etc., and a main body is comprised. The main body has a partition bar made of 1f so as to accommodate a plurality of attached substrates. The partition bar was welded at equal intervals parallel to the entire surface of the main body. One end 1e of the uppermost part of the main body was welded to the end of the partition bar, and each 1e at the center of the bottom face of the main body and the other end were welded and fixed. The connecting parts made of 1c are in the form of pipes, and the side surfaces of 1c are welded to two locations 1b on either one of the upper surfaces of the main body. Then, 1b on one side of the lid was passed through the pipe-shaped connecting part so that the lid could be freely opened and closed.

As shown in the cross-sectional view of FIG. 4, several attached substrates 2 are accommodated in an upright state. In some cases, in order to increase the stability at the seabed, as shown in FIG. 8, for example, a binding band 14 is used to attach a weight 4 such as a steel bar.

When the abalone larvae are discharged using the discharge device configured as described above, the attached substrate 2 and the light of the same shape as shown in the perspective view in which the attached substrate and the light shielding plate in FIG. For example, a black light shielding plate 5 having a low transmittance is overlapped. In order to prevent the released larvae from entering between the two plates, the adherent substrate 2 and the light shielding plate 5 are fixed with the clasp 6 and the two plates are brought into close contact with each other.

Further, cellophane or the like having low light transmittance may be attached to the adhesion substrate 2 in place of the light shielding plate 5 to shield the light.

As shown in the cross-sectional view of the aquarium for attaching the released larvae to the adhering substrate in FIG. 6, the adhering substrate 2 and the light shielding plate 5 are attached to the net-like growth trough 8 attached to the aquarium 7. Install it so that it is on the top surface, and place the discharge larvae 9 on the light-shielding plate 5. The released larvae 9 that prefer dark places move from the light shielding plate 5 through the opening hole 3 to the transparent attached substrate 2 on the back surface and adhere to the attached substrate 2.

Thereafter, the attached substrate 2 and the light shielding plate 5 installed as described above are taken out of the water tank 7 and sufficiently drained. Abalone stops moving when it becomes anhydrous. In this state, the clasp 10 is removed, and the light shielding plate 5 is peeled off from the transparent attached substrate 2.

The adhering substrate 2 is accommodated in the discharge rod 1 shown in FIG. At the time of storage, the lid is opened and the transparent adhering substrate 2 to which the released larvae 9 are attached is inserted into the part separated from the upper part of the main body by the partition rod, and the binding band 14 or the like is used so that the lid does not open and close freely. The lid and the main body of the discharge basin 1 are fixed.

As shown in the sectional view of the container for transporting the discharge apparatus in FIG. 7, the discharge apparatus covered with the urethane mat 11 soaked with seawater is accommodated in the container 10 to prevent the discharge larvae 9 from drying. Transport in anhydrous conditions to the sea.

As shown in the underwater installation diagram of the discharge device in FIG. 8, when the arrival point is reached, the discharge device is taken out from the container 10, and the connecting rope 13 with the float 12 is connected. A weight 4 is attached and a discharge device is introduced into the sea from the sea and installed on the seabed. Since the discharge larvae 9 are quickly moved from the bottom surface and the lower side of the discharge basin 1 to the external rocks when the inside of the discharge device installed in this way is exposed to light, it can be discharged quickly.

Moreover, if the discharge juvenile 9 moves, the connection rope 13 can be traversed and the discharge device can be recovered from the water, and marine pollution can be prevented.

The invention's effect

The present invention provides a plate body in which a plurality of opening holes are provided in the surface of a transparent plate material, and a mountain valley is continuously provided when viewed from the side, and abalone, turban shell and other juveniles are previously attached thereto. 1 means, 2nd means which arranges this in a discharge basin assembled in a frame shape, and 3rd means which carries the discharge basin to the sea and attaches a mark such as a float to a predetermined fishing ground and fixes it to the seabed It is characterized by using the method and the apparatus for discharging juveniles characterized by the above. The following effects can be obtained.

In a discharge device that discharges artificially produced aquatic seedlings into the water, the attachment substrate was made of a material with high light transmission, so the speed of seedling movement using the characteristics of organisms that move quickly from light. Can be released quickly and quickly.

In addition, when abalone or the like is attached, it is possible to shield the light by superimposing materials with low transmittance, and to attach aquatic products that prefer dark places to materials with high light transmittance.

Furthermore, since it can be recovered by attaching a float, it prevents marine pollution.

As an application example of the present invention, in a discharge device that discharges seedlings of artificially produced aquatic products into the water, an adherent substrate was manufactured with a material having high light transmittance, and therefore the characteristics of moving quickly from light are used. It is possible to release seeds and seedlings quickly and quickly. Therefore, the seedlings can be released with high vitality, and the survival rate can be improved.

With regard to the release of animals whose behavior is influenced by the influence of light, it has become possible to increase the movement speed by increasing the light transmittance. For example, a release device can be made of a material such as plastic with a high light transmittance. It can also be used for manufacturing and releasing.

It is a perspective view of a discharge device. The shape of the adhered substrate. It is a perspective view of a discharge basin. It is sectional drawing of a discharge device. It is the perspective view which piled up the adhesion substrate and the light-shielding plate. It is water tank sectional drawing for making discharge juvenile adhere to an adhesion substrate. It is sectional drawing of a container for discharge apparatus transport. It is an underwater installation drawing of a discharge device.

Explanation of symbols

1: Discharge bowl 2: Adhering substrate 3: Opening hole 4: Weight 5: Shading plate 6: Clasp 7: Water tank 8: Raising bowl 9: Discharged larvae (abalone)
10: Container 11: Urethane mat 12: Float 13: Connection rope 14: Cable tie

Claims (2)

A first means for providing a plurality of opening holes on the surface of the transparent plate material, forming a plate body in which peaks and valleys are continuously provided when viewed from the side surface, and preliminarily attaching young shellfish such as abalone and tuna; , Second means for arranging this in a discharge basin assembled in a frame shape, and third means for carrying the discharge basin to the sea and attaching a marker such as a float to a predetermined fishing ground and fixing it to the sea floor. A method for releasing juvenile shellfish characterized by the above. A plurality of opening holes are provided on the surface of the transparent plate, and a plate body is formed in which the valleys are continuously formed when viewed from the side, and abalone, tuna, and other juveniles are previously attached to this to form a frame. A juvenile shell release device characterized in that it is placed and fixed on the assembled discharge basin, and the discharge basin is marked and secured to the seabed.

Images