JP2018074979A - Land forcing aquaculture method of tridacna crocea - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a land forcing aquaculture method of eliminating the need for forming aquaculture holes and enabling shellfishes to be freely opened for receiving sunlight, the forcing aquaculture method that makes illumination electrically to thereby enable growing even at night.SOLUTION: A land forcing aquaculture method is provided which is not an aquaculture hole method to put spats in aquaculture holes, in which the shellfishes of Tridacna crocea 6 are exposed and cultivated in a land aquarium 1, and after the growth, the shellfishes are harvested and commercialized in an unhurt state without being damaged in the shellfishes and contents. The forcing aquaculture method makes illumination electrically by light L and promotes the growth when the sunlight cannot be received, and the illumination is electrically made by the light L even at night when the sunlight cannot be received, and thereby symbiosis algae are grown and the Tridacna crocea 6 growing with this as bait is grown in a short term, resulting in enabling the forcing aquaculture.SELECTED DRAWING: Figure 5

Description

The present invention relates to a method for forcibly cultivating and growing himejako in an onshore water tank.

As in Patent Document 1, it has been proposed to grow larvae by installing an onshore tank to which fresh seawater is supplied on a culture board in which larvae are planted in larvae planting holes. However, when this young shellfish grows and harvests, it is necessary to dig around the grown shellfish with a tool such as a chisel and take it out of the hole, and the shellfish are damaged or the contents are damaged and die. , The market value drops dramatically. In addition, as the ecology of tiger oysters, shells are opened and closed in a narrow aquaculture hole, so that it is difficult to open the shells effectively and receive sunlight effectively to receive and grow symbiotic algae. Moreover, it is unthinkable to illuminate with electricity at night and grow with symbiotic algae.

JP-A-10-117628 Patent No. 6001142

However, the inventor of the present inventor, when cultivating on land, as in Patent Document 2, it is better to cultivate sunlight in an aquarium without a culture hole from the beginning so as not to be restrained by the culture hole. It was judged that it was advantageous to receive light effectively and to grow in a short time. However, we further studied whether forcing culture can be done by shortening the aquaculture period.
The technical problem of the present invention pays attention to such a problem, and it is not necessary to form an aquaculture hole. Make it possible to grow and implement a method of forcing culture.

The technical problem of the present invention is solved by the following means. Claim 1 is not an aquaculture hole method in which juveniles are placed in the aquaculture holes, but is cultured in an onshore aquarium with the shells of Himejako exposed, and harvested in an intact state without damaging the shells and contents after growth. In the method of commercialization,
This is a forage culture method for Japanese giant octopus characterized in that when it cannot receive sunlight, it is electrically illuminated to promote growth.

The second aspect of the present invention is the promotion culture method for scallops according to claim 1, wherein the inner surface of the aquarium is a reflective surface having a high reflection efficiency or a reflective surface having a high reflection efficiency is provided above the water tank. is there.

Claim 3 is not an aquaculture hole method in which juveniles are placed in aquaculture holes in the aquarium, but is cultured with the octopus shells exposed, and harvested intact without damaging the shells and contents after growth. In the equipment to be commercialized,
An apparatus for promoting cultivation of Japanese octopus, characterized by providing a light-emitting means for illuminating electrically and promoting growth when sunlight cannot be received.

The fourth aspect of the present invention is the promotion culture apparatus for scallops according to claim 3, wherein the inner surface of the water tank is a reflective surface with good reflection efficiency or a reflection surface with high reflection efficiency is provided above the water tank. is there. The reflection surface may be provided on the inner surface of a lamp shade shape, or may be provided with a single or a plurality of reflection plates and reflected in the water tank.

It is not a culture hole method that puts juveniles in the culture holes as in claim 1, but is cultured in an aqua tank on land with the shells of Himejako exposed, and intact after the growth without damaging the shells and contents In the method of harvesting and commercializing in
Because it is a forcing culture method that illuminates electrically and promotes growth when sunlight cannot be received, symbiotic algae grow by feeding light even at night when sunlight cannot be received. Growing giant octopus grows in a short period of time, and forcing culture is possible.

If the method of providing the reflective surface with good reflection efficiency or providing the reflective surface with good reflection efficiency above the water tank as in claim 2, the reflected light is also radiated to Growth is further promoted.

It is not a culture hole method that puts juveniles in the culture holes as in claim 3, but is cultured in an aqua tank on land with the shells of tiger oysters exposed, and intact after the growth without damaging the shells and contents In the device to harvest and commercialize in
When we cannot receive sunlight, we have provided lighting means to illuminate electrically and promote growth, so even at night when we cannot receive sunlight, symbiotic algae grow and feed on it. Growing giant octopus grows efficiently, and forcing culture is possible.

As in claim 4, the inner surface of the water tank is a reflective surface with good reflection efficiency, or a reflective surface with high reflection efficiency is provided above the water tank, so that reflected light is also radiated to Growth is further promoted.

It is a perspective view of a water tank for cultivating Japanese octopus provided on land according to the present invention. It is a longitudinal cross-sectional view of the said water tank. It is a longitudinal cross-sectional view which shows another embodiment of the said water tank. This is a method for harvesting Japanese octopus, wherein (1) is a conventional method and (2) is a method of the present invention. It is a longitudinal cross-sectional view of the length direction of the said water tank. It is a longitudinal cross-sectional view of the length direction of the water tank which made the illumination means a long shape.

Next, an embodiment explains how the land-based aquaculture technology of the present invention is practically realized. FIG. 1 shows an aquaculture tank provided on land, and rectangular tanks 1 and 2 are formed. The water tank 1 on the right side of the figure is formed in a container shape with concrete blocks 3 on land. Although the bottom is not visible, concrete blocks are laid down to form the bottom. In addition, a non-water-permeable coating is applied to the inner surface so that water does not permeate, so that seawater does not leak.

The water tank 2 on the left side is formed in a container shape with a veneer plate 4, and a water-impermeable paint is applied to the inner surface so that water does not permeate, so that seawater does not leak. The inner surfaces of the water tanks 1 and 2 may be covered with a water-impermeable film or sheet in place of the water-impermeable paint or together with the water-impermeable paint to ensure water leakage prevention. In addition, there is also strength such as FRP, and a method may be used in which the water tanks 1 and 2 are formed of a non-permeable synthetic resin, and the swordfish is adsorbed and supported in the tank of the water-impermeable film or sheet.

In this way, after ensuring a watertight function so that seawater does not leak, as shown in FIG. 2, the bottoms of the tanks 1 and 2 are provided with sediments and other pebbles (including gravel and ballast) 5. Alternatively, sand is laid for about 3 to 15 cm, preferably about 5 to 10 cm, and seawater W is supplied so that the pebbles 5 and / or sand is submerged. The seawater W is provided with a pipe P so that fresh seawater is always pumped up from the sea. In addition, the tank water soiled by the cultivation of the himejako 6 ... is drained outside the tanks 1 and 2. The pebbles 5 and / or the sand layer becomes dirty and odors in the lower 2 cm, and even if sand is used, it may become dirty in one year.

Therefore, as shown in FIG. 3, a strong net 7 is laid on the bottom of the aquarium, and pebbles 5 and / or sand are laid on the bottom, and a funnel-like sewage collection 8 is formed on the lower side of the net 7 so that the sewage If it is made the structure which collect | recovers and always drains, the burden which cleans the inside of the water tanks 1 and 2 will be reduced.
The aquaculture facility having the above-described configuration is provided on land, and the larvae of himejaco 6 are cultivated so that they are supported by the pebbles 5 and / or sand. At this time, fresh seawater is always pumped up from the sea and supplied to the water tanks 1 and 2, and when contaminated with the himejako 6, it is settled under the net 7 and drained outside the water tank. As a matter of course, the animals that are the enemy of Himejako cannot be put in the tanks 1 and 2. Therefore, himejako can inhabit with the shells fully open without being restrained by the culture holes, and can take in sunlight enough to the outer surface of the shells and use light energy to grow smoothly and efficiently.

At night, the sunlight cannot be expected, and symbiotic algae do not grow. However, in the present invention, as shown in FIG. 5, a single or a plurality of lights L1, L2,... Are provided on the aquarium 1, and the light is applied to the Himejako 6 to illuminate the symbiotic algae and symbiotic algae. Encourage the growth of Himejako 6 Further, the reflection surface R is also provided on the inner surface of the water tank 1 (2). The inner surface is the inner surface of the side wall or bottom wall of the water tank 1. Reflecting plates r1 and r2 are provided on the upper side of the water tank 1 with a reflection angle, and the water tank 1 (2) side is a reflecting surface R. As shown in FIG. 6, the reflectors r <b> 1 and r <b> 2 are integrated into an umbrella shape (lamp shade) r of the fluorescent lamp L and hung above the water tank 1 (2). The shape is a concave arc shape as shown by a broken line, and its inner surface is a reflection surface R.
For the reflection surface R, it is sufficient to improve the reflection efficiency. For example, there are methods such as applying a silver paint, applying silver paper, making a mirror, or depositing Al. When a film or sheet is used, a film or sheet with good reflection efficiency is used. In addition to directly irradiating light in this way, if the reflecting means is provided and the reflected light is also emitted toward Himejako 6, the effect of irradiating the symbiotic algae with light is enhanced.

Himejako 6 is adsorbed and supported by carcasses and other pebbles 5 and / or sand, but also adsorbs to synthetic resins such as FRP as long as ash juice that Himejaco 6 dislikes is not produced. Therefore, instead of laying the pebbles 5 and / or sand in layers of several centimeters, the bottom of the water tank can be directly adsorbed and supported by a synthetic resin member as long as it is not a material disliked by Himejako. Or you may make a water-impermeable water tank by apply | coating a water-impermeable paint to the inner surface of a water tank, or covering with a film or a sheet | seat. In addition, the structure where the side wall of the water tanks 1 and 2 is made low or a hole is made on the opposite side to the pipe P and the sewage in the water tank overflows is also possible.

Next, a method for harvesting grown Japanese octopus will be described. The submarine Himejako 9 has the habit of secreting fluid and digging a hole in the rock at the bottom of the sea to hide as shown in Fig. 4 (1). As a result of the inventor's experiment, this behavior seems to protect himself from foreign enemies.
Therefore, when harvesting the cultivated giant octopus 9, it is necessary to scrape the surrounding rock 10 with the chisel i or the like and take out the shell 9 but at this time, the body is damaged and the market value is lowered.
However, in the case of the present invention, the giant octopus 6 is not hidden in the hole and is only adsorbed to the pebbles 5 and / or sand, so that the adsorbed pebbles and / or sand can also be harvested and shipped together. If there is no pebbles and / or sand, etc., and they are adsorbed to the bottom or sheet of the water tank, they are peeled off using a spatula 11 as shown in (2) before shipping.
Therefore, according to the land culture method of the present invention, it is not only necessary to form a hole for inserting a juvenile shellfish, but also the harvesting is easy and the market value of himejako does not decrease.
In addition, Himejako is not subject to the restraint of aquaculture holes, can live with the shells fully open, symbiotic algae grow efficiently using light energy by taking in enough sunlight .

Finally, I will explain the research results of Himejako's habits. The inventor of the present invention suddenly obtained a large amount of larvae of Himejako due to special circumstances, so there was no time to provide a culture hole, and it was unavoidable to collect pebbles and cultivate them on the bottom of the aquarium. In addition, the amount of pebbles is not sufficient, and there are examples of farming without pebbles.
In this way, I wasn't expecting anything because I started with a lack of preparation, but Himejako grew up steadily even if I didn't have any planting holes. I wondered there and researched it a lot, and concluded that it would be a hole to prevent foreign enemies to protect myself.
Only the inventor was able to correctly understand the purpose of digging a hole, and the evidence of the lack of preparation as described above was effective. Was jealous that it was essential. In addition, laying pebbles on the bottom of the aquarium so as to support the giant octopus in the state of imitating the sea floor is inadequate because there is a risk of predation by external enemies. Therefore, as a matter of course, it is assumed that seafood, which is a foreign enemy for Himejako, cannot be put together in Japanese aquariums.

By the way, pebbles and / or sand as in the present invention has a configuration in which pebbles and / or sand are laid and the clam shell is supported in a state imitating the seabed, and can be easily invented. It seems to be broken. However, laying pebbles and / or sand on the seabed will not prevent him, so he will not come close. Because of Himejako's habits, a rocky place where you can dig a hole for a hideout to prevent being attacked by external enemies is required.
Contrary to this behavior, the present invention has grown himejako in an aquarium with no rocks and only pebbles and / or sand. The secret is that, as mentioned above, even if the foreign enemy of Himejako can be prevented (even if it does not enter the aquarium), the hole is unnecessary, and there is no problem with pebbles and / or sand. Or you don't even need sand.
In this way, if you know that there are no foreign enemies, you don't need aquaculture holes, and you can keep the shells open all the time, so you won't be stressed by external enemies, and you will always receive sunlight and both himejako and symbiotic algae are efficient. It can grow in high quality and can cultivate high-quality chickpeas in a short time.
The lights L, L1, L2,... May be incandescent lamps, fluorescent lamps, or LEDs, and the type of light source is not limited.

As mentioned above, when cultivating Japanese octopus in the aquarium on land, when the sunlight cannot be received, the method of accelerating the growth by electrically illuminating the octopus is possible. Can be shipped in between. In addition, the inner surface of the water tank is a reflective surface with good reflection efficiency, or a reflective surface with high reflection efficiency is provided with a reflection angle above the water tank, so that the reflected light is also radiated to himejako and symbiotic algae. , The growth of Himejako is further promoted.

1, 2 Aquarium 3 Concrete block 4 Veneer board 5 Soil and other pebbles W Seawater P Pipe 6 Himejako 7 in the tank 7 Net 8 Collecting sewage 9 Himejako i in the hole
10 rocks
11 spatula L / L1 / L2 ... Light R Reflective surface r Reflector

Claims (4)

Rather than culturing holes for placing juveniles in the culturing holes, cultivating them in an aqua tank on land with exposed oyster oyster shells, and harvesting and commercializing them without damaging the shells and contents after growth In
A forage culture method for Japanese octopus, characterized in that when it cannot receive sunlight, it is electrically illuminated to promote growth. The method for facilitating cultivating Japanese octopus according to claim 1, wherein the inner surface of the water tank is a reflective surface having a high reflection efficiency or a reflective surface having a high reflection efficiency is provided above the water tank. It is not a culture hole structure that puts juveniles in the culture hole, but it is cultivated in a state where the shell of Himejako is exposed, and after growing it is harvested in an intact state without damaging the shells and contents, and commercialized,
An accelerating culture apparatus for Japanese octopus, characterized in that it is provided with lighting means for electrically illuminating and promoting growth when sunlight cannot be received. 4. The promotion culture apparatus for scallops according to claim 3, wherein the inner surface of the water tank is a reflective surface having a high reflection efficiency or a reflection surface having a high reflection efficiency is provided above the water tank.

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