JP2013252066A - Fresh water fish culturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for culturing fresh water fish for which insects are efficiently captured as feed.SOLUTION: A light emitter is arranged in the neighborhood of an aquaculture pond. Insects which are attracted by the light emitter are captured as feed. An insect net is arranged under the light emitter. A wind making device for suctioning the insects attracted by the light emitter toward the insect net is arranged for efficient capture.The insects are dropped into the aquaculture pond through an insect removing hole which is arranged in a lower part of the insect net for easily putting the insects as feed in the aquaculture pond. Alternatively, light emitters are arranged under the water in the aquaculture pond and the insects are made to leap into the aquaculture pond.

Description

  The present invention relates to a method for culturing freshwater fish.

In raising seafood, the cost of feeding becomes a problem. From this viewpoint, Patent Document 1 discloses a method for increasing feed efficiency.
Some freshwater fish such as yamame trout, char, and haya are known to feed on insects. Thus, if insects that serve as food can be captured efficiently, food can be obtained at a very low cost, and an economically efficient culture method can be realized.
However, a culture method using insects as food has not been disclosed.

JP 2007-159540 A

  The problem to be solved is to provide a method for cultivating freshwater fish that efficiently capture insects and feed them.

The method for cultivating freshwater fish according to the present invention includes:
A light emitter is provided in the vicinity of the culture pond, and insects attracted by the light emitter are captured and used as food.

  Freshwater fish live in ponds in the mountains. It is natural to have aquaculture ponds in the mountains. In the mountains, there are many insects that serve as food, and they can be attracted and captured by illuminants to obtain a sufficient amount of food.

The method for cultivating freshwater fish according to the present invention includes:
A worm net is provided in the vicinity of the illuminant, and a wind-up device for sucking the insect attracted by the illuminant toward the worm net is provided.

  It is preferable that insects serving as food are automatically captured after being attracted by the illuminant. An insect trap that sucks an insect attracted by a light emitter toward a complementary net is widely known and is also effective in the present invention.

The method for cultivating freshwater fish according to the present invention includes:
The insect net is provided above the aquaculture pond;
An insect extraction hole is provided at the bottom of the worm net,
Insects are dropped into the culture pond from the insect extraction hole.

It is also preferred that the captured insects are fed into the culture pond as food efficiently. If insects can be dropped into the aquaculture pond from the insect extraction holes provided at the bottom of the insect trapping net, the insects can be easily put into the aquaculture pond.
Here, the “insect extraction hole” may be a hole (including those that can be manually opened and closed) made of metal or the like at the bottom of the insect net, and the insect net is opened up and down, and the lower part is clipped. It may be closed or tied with, for example, and the insect may be dropped downward by releasing the closure or knot after the worm.
In order to ensure that the insects fall into the culture pond, it is preferable to take away the flying power of the insects. For this purpose, other methods can be used, such as staying in the insect trap for a long time to weaken the insects, or using an insect trap that applies voltage to kill insects.

The method for cultivating freshwater fish according to the present invention includes:
The luminous body is provided in the water of the culture pond.

  By providing the illuminant in the water of the culture pond, the attracted insects jump into the culture pond. Insects can be fed as feed to the freshwater fish to be cultivated without having to capture and put them into the aquaculture pond.

The method for cultivating freshwater fish according to the present invention includes:
The freshwater fish is any one of yamame trout, char, or falcon.

  Yamame, char, and haya are known to feed on insects and are suitable for the culture method of the present invention.

  The freshwater fish farming method of the present invention can efficiently capture insects and feed them.

FIG. 1 is a diagram showing an arrangement of an aquaculture pond and an insect trap. Example 1 FIG. 2 is a diagram showing an insect trap. Example 1 FIG. 3 is a diagram showing the arrangement of the aquaculture pond and the light emitters. (Example 2)

  Hereinafter, Example 1 using an insect trap and Example 2 in which a light emitter is provided in water will be described.

FIG. 1 is a diagram showing an arrangement of an aquaculture pond and an insect trap. An insect trap 2 is provided in the upper part of the culture pond 1, and insects captured by the trap 2 are easily put into the culture pond 1.
In the aquaculture pond, freshwater fish such as yamame trout, char, and haya can be cultivated. As insects captured by the insect trap 2, mosquitoes, moths, ephemera, stink bugs and the like serve as feed for freshwater fish.

FIG. 2 is a diagram showing an insect trap. The insect trap 2 has a cylindrical shape and is provided with an opening for the insect to enter. The light emitted from the illuminant 3 can be seen from the opening, and an insect having positive phototactic properties enters the insect trap 2 toward the illuminant 3.
The insect that has entered is captured by the insect net 5 by the wind generated by the wind generator 4. The lower part of the worm net 5 is stopped by a clip 6, and the insect is retained in the worm net 5. By opening the clip 6, an insect extraction hole is formed in the lower part of the worm net 5, and the insect falls into the culture pond 1.
When it is necessary to take away the flying force when the insect is dropped, a voltage may be applied from the insecticidal electrode 7.

  It is captured at night because it uses the phototaxis of insects. If the time for feeding the fish to be cultivated is during the daytime, the insects captured the night before may be kept in the worm net 5.

FIG. 3 is a diagram showing the arrangement of the aquaculture pond and the light emitters. In the drawing, two light emitters 8 are shown in which the light emitters 8 are provided at the bottom of the culture pond 1, but any number of light emitters 8 may be used.
As shown by the dotted line in the figure, light is emitted toward a wide angle and attracts insects. Insects will jump into the aquaculture pond, so they can be fed as feed to freshwater fish to be cultivated without being captured and put into the aquaculture pond.

  This is a method for cultivating freshwater fish that can efficiently capture insects and feed them.

DESCRIPTION OF SYMBOLS 1 Aquaculture pond 2 Trapping device 3 Luminescent body 4 Winding device 5 Prosthetic net 6 Clip 7 Insecticide electrode 8 Luminescent body

Claims (5)

  A method for cultivating freshwater fish, characterized in that a luminescent material is provided in the vicinity of a culture pond, and insects attracted by the luminescent material are captured and used as food.   The method for cultivating freshwater fish according to claim 1, further comprising: a worm net provided in the vicinity of the illuminant, and a wind-up device for sucking an insect attracted by the illuminant toward the worm net. . The insect net is provided above the aquaculture pond;
An insect extraction hole is provided at the bottom of the worm net,
The method for cultivating freshwater fish according to claim 2, wherein an insect is dropped from the insect extraction hole into a culture pond.   The method for cultivating freshwater fish according to claim 1, wherein the illuminant is provided in water of the culture pond. The method for cultivating freshwater fish according to any one of claims 1 to 4, wherein the freshwater fish is any one of yamame trout, char, or haya.

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