JP2003009713A - Method of transplanting coral and unit for acclimatizing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for transplanting coral, capable of easily and surely realizing transplantation of the coral. SOLUTION: This method for transplanting the coral comprise cutting off a daughter stock 21 containing a skeleton from a mother stock 20, anchoring a support 22 as a fixing means to a cut surface of the daughter stock 21, fastening the daughter stock 21 to the inside of an acclimatizing unit 10, which is located in a transplantation sea area so as to enable the daughter stock 21 to breed in the sea area, by utilizing the support 22, breeding the daughter stock 21 until its coenosarc part 23 covers the base of the support 22, forming a pit 25 having a size larger than that of the support 22 in depth and diameter on a rock mass 24 in the transplantation sea area, and making it easy that the coenosarcous part 23 anchors to the rock mass 24 near to an opening of the pit.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method and a habituation device for transplanting coral into a desired sea area.

[0002]

2. Description of the Related Art Various attempts have been made to transplant or multiply corals. The first is a method described in Japanese Patent Publication No. 3-64089 as Example 2 in which a coral sapling is adhered in a hole drilled in a concrete plate by using an underwater bond. There is a problem that the cost is high and coral is harmed by the toxicity of underwater bonds, so that only large offspring can withstand.

Secondly, there is an invention of Japanese Patent Application Laid-Open No. 9-121712 which uses an anchor-shaped transplantation assisting tool. However, the cost of making this transplantation aid is not cheap, and there is a drawback that it damages the surrounding landscape. Thirdly, there is a method of anchoring the coral on the rope and fixing it together with the rope to the sea floor, but it is extremely weak against tidal currents and it is difficult to settle on the rock. Furthermore, a method of fixing corals using nails or piles has been tried, but since fixing work is performed in the sea, it consumes a lot of labor and has a disadvantage that the survival rate is low, and further, Metals such as nails are harmful to corals.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to achieve coral transplantation relatively easily and reliably by a method that does not cost much. That is. Another object of the present invention is to ensure that the offspring can be firmly established in a transplanted sea area different from the sea area where the parent strain inhabits.

[0005]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention cuts a child strain containing a skeleton from a coral parent strain, and fixes a support as a stationary means on the cut surface of the child strain,
A habituation device was installed in the same area to allow the breeding stock to be reared in the transplanted sea area, and the support was used to fix the pedigree strain in the habituation equipment, and the breeding was continued until the pod part covered the base of the support body. , A deep hole deeper than the support and a large diameter hole is formed in the bedrock of the transplanted sea area, and a measure is taken to facilitate the adhesion of the flesh part to the bedrock near the entrance of the hole.

To carry out the method for transplanting coral of the present invention, a casing capable of entering and exiting seawater, and a sub-strain holder installed in the casing for breeding a large number of sub-strains,
It is desirable to use a habituation device comprising a fixing part provided to fix the support fixed to the cut surface of the sub-stock to the above-mentioned sub-stock breeding tool.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is a method for transplanting coral into a desired sea area different from the sea area where the parent strain grew, and therefore, measures for overcoming differences in living environment such as water quality, water flow, and light quantity are provided. It is characterized by taking measures. The basis of the measures is to minimize the stress that will be applied to the offspring and to acclimate to the environment of the transplant area. For the purpose of acclimatization to the environment, the invention particularly uses acclimatization devices.

[0008] In the method of the present invention, first, a sub-stock containing a skeleton is cut from a coral parent stock, and a support is fixed to the cut surface of the sub-stock as a stationary means. The term "cutting" is used in the present invention to mean cutting, and it does not matter whether or not a blade is used. An adhesive is used to fix the support. As a matter of course, as the adhesive, one having no toxicity or a negligible composition to the offspring should be used. However, even if it contains unfavorable components, it can be used as long as it does not elute into seawater after solidification, since it is considered to have no adverse effect on the substrains and the environment. For example, among those which are commercially available as so-called instant adhesives, those which satisfy the above conditions are suitable for the practice of the present invention. There are various materials that can be used as the support. In short, any material that is stable to seawater, has no adverse effect on corals, and is durable enough to support coral offspring until completion of bedrock fixation, for example, organic materials typified by plastics ,
Alternatively, various inorganic materials can be used.

[0009] In order to make it possible to raise the offspring in the transplant area,
A habituation device will be installed in the same area, and optimal conditions will be prepared to prevent excessive stress on the stock. Therefore, the support is used to fix the sapling to the acclimation device, and while waiting for the acclimation of the sapling, the pod portion formed on the cut surface of the sapling covers the base of the support, that is, the bonding portion between the stub and the support Bring up the offspring until it becomes.

Therefore, the acclimatization device has a casing capable of entering and exiting seawater so that the coral offspring can be sufficiently exposed to the seawater in the transplanted sea area. The structure of the casing can be freely decided, but seawater can enter and leave freely and there is no adverse effect on corals,
Moreover, it is necessary to have a structure in which the child stock does not flow out. Therefore,
When using rebar, keep it to the minimum limit, and make sure that the child strain does not come too close to the rebar. A sub-stock holder is installed in the casing to breed a large number of sub-stocks. The sub-stock holding device holds the support adhered to the sub-stock by, for example, sandwiching or inserting the support, and does not use a material or structure causing stress such as metal as a fixing portion or a holding means. In addition, it is preferable that the cut surface of the sub-plant and the holder do not come into contact with each other when the support is fixed to the fixing portion.

Next, a vertical hole deeper than the length of the support and larger than the outer diameter (shape) of the support is formed in the bedrock in the transplanted sea area, and the support part is inserted into the vertical hole to set a child strain. To do. Since the vertical hole is deeper than the support and has a large diameter, the support completely enters the vertical hole, and the pods formed on the cut surface of the offspring are always in contact with the inlet of the vertical holes. It becomes easy to stick to. In the present invention, the term "vertical hole" means an upward hole formed in the bedrock. In addition, when the stability of the plant is insufficient when the support is inserted into the vertical hole, an auxiliary material such as underwater putty or clay can be used to enhance the stability.

[0012]

The present invention will be described in more detail with reference to the embodiments shown in the drawings. Describing from the habituation device 10 of the present invention shown in FIG. 1, the habituation device 10 has a frame shape having an outer shape capable of opening the upper surface of a hexahedron and forming a skeleton corresponding to the edges of the container 11 and the lid 12. It has a structure, and further has a casing 14 having a skeleton frame with a net 13 made of a material that is stable to seawater and harmless to corals.

In order to breed a large number of sub-strains 21, a sub-strain holder 15 is installed in the casing. The illustrated child strain holder 15 includes a holder 16 made of a material that is stable to seawater and does not adversely affect coral, and the holder 1
A column 17 for arranging 6 at a position away from the bottom of the body
And a plurality of upward small holes are formed in the upper portion of the holding body 16 as the fixing portions 18 in one row.

In the embodiment, a casing 14 is formed by making a container 11 and a lid 12 each having a length of 1 m, a width of 2 m, and a height of 0.3 m from a reinforcing bar, and laying a nylon net 13 thereon.
It was used. The mesh size was 2 × 2 cm to 3 × 3 cm. Further, a vinyl chloride pipe is used as the child stock holder 16, and a fixing portion 18 is formed by penetrating a hole only through the upper surface thereof.
And

A coral transplanting method according to the present invention will be described with reference to FIG. First, a coral parent strain 20 was finally cut with scissors to a length of about 5 cm to obtain a skeleton-containing strain 21. The broken line in FIG. 2 (a) indicates the cutting position, and the parent strain 20 after the separation of the child strain grows again. The cut off-line stock 21 was wiped of water on the cut surface, and an acrylic support 22 was bonded to the cut surface using a chemically reactive instant adhesive containing 100% cyanoacrylate (FIG. 2).
(B)).

The child strain 21 with a support was fixed on the acclimation device 10 previously installed in the desired transplanted sea area and bred for 30 days. The fixing was performed by inserting the support 22 into the small hole of the fixing portion 18 (FIG. 2 (c)). It should be noted that since 20 small holes are provided in the fixing portion for each holding body and 10 holding bodies 16 are installed in one casing 14, a maximum of 200 individuals can be bred.

Although the casing 14 has a mesh structure, it can be said to be a kind of cage because it maintains a constant environment inside and protects the saplings while exposing them to seawater. Therefore, the stress of environmental changes is relieved,
It can be bred for a certain period of time without being eaten by other organisms, whereby the offspring grow so that the pod part 23 covers the support 22 (Fig. 2 (d)), and protect and acclimate in the transplanted sea area. Also progressed favorably.

Then, the casing is temporarily removed near or without removing it, and a vertical hole 25 deeper than the support 22 and larger in diameter than the support 22 is formed in the bedrock 24 of the transplanted sea area where the casing 14 is installed (see FIG. 2 (e)). After forming the required number of vertical holes 25, one support member 22 of the sub-plant 21 was inserted into each vertical hole 25 and placed (FIG. 2).
(F)). At the time of stationary, the lower end portion of the substock 21, that is, the pod portion 23 that has grown in the previous stage, is in a state of being caught on the bedrock 24 and is stable. It is stable in this state under the ebb and flow of the tide and does not escape, but if necessary, the above-mentioned auxiliary materials such as clay and underwater putty can be used in combination to improve the stability.

The coral sub-plants 21 transplanted in such a state do not lift up and the pods are not damaged, and the pods start to adhere to the bedrock 24 under the load of the sub-plants. Since it is in contact with the bedrock 24 with the optimum tension, it is easily fixed in a short period of time (Fig. 2 (g)).
The time until fixation in the examples was 30 days on average, and basically all of the offspring were implanted and development started. Therefore,
If you can not transplant, it may be due to defective cut off strains,
Or, it was considered that the clipping was insufficient, and failures at both the environmental acclimation and transplantation stages could not be found.

[0020]

EFFECTS OF THE INVENTION Since the present invention is constituted and acts as described above, it is possible to transplant a child strain while acclimatizing to the environment in a transplanting sea area in an environment different from the environment in which the parent strain grew. It has an advantage that the survival rate is extremely high, even a small sapling can be quickly fixed to the bedrock, and the fixing work in water is almost unnecessary.
In particular, according to the present invention, since it is possible to fix the coral by selecting a desired place of the foundation rock, it is possible to easily form one rock body with many corals in a beautiful arrangement, for example. It is possible to form aquaculture corals with unprecedented commercial value.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a habituation device used directly for carrying out a coral transplanting method according to the present invention.

FIG. 2 is an explanatory view showing, step by step, a coral transplanting method according to the present invention.

FIG. 3 is an explanatory view showing an enlarged main part of the above method.

[Explanation of symbols]

10 Acclimation device 14 casing 15 Child stock fixture 20 Coral parent stock 21 Coral Child Stock 22 Support 23 Carcass part

Claims (2)

[Claims] 1. A method for transplanting coral into a desired sea area, which comprises cutting a skeleton-containing child strain from a coral parent strain, and fixing a support as a stationary means on the cut surface of the child strain,
A habituation device was installed in the same area to allow the breeding stock to be reared in the transplanted sea area, and the support was used to fix the pedigree strain in the habituation equipment, and the breeding was continued until the pod part covered the base of the support body. , A coral transplanting method characterized in that a vertical hole deeper than a support and having a large diameter is formed in a bedrock in a transplanted sea area, and that a flesh portion is easily fixed to the bedrock near an entrance of the vertical hole. 2. A device used directly for carrying out a method for transplanting coral into a desired sea area, wherein a casing capable of entering and leaving seawater, and a sub-plant placed in the casing for breeding a large number of sub-lines. A habituation device for a coral transplanting method, comprising a holder and a fixing portion provided for fixing a support fixed to a cut surface of a child plant to the child holder.