JPS6359824A - Apparatus for breeding marine worm - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a culture device suitably used for breeding carp beetles belonging to the annelid polychaete.

<Prior art> Corylus larvae, lugworms, etc. are suitable as bait insects for high-grade fish for sea fishing. Currently, these bait insects are collected from their habitats and sold commercially. However, due to habitat destruction, pollution, and overfishing, both the habitat and the amount collected are decreasing year by year. In particular, it is said that it takes 2 to 3 years for the growth of caterpillars in nature, making it impossible to provide a stable supply throughout the year.

For these reasons, in recent years, it has been considered to farm fishing bait insects such as cutworms and lugworms. As for cultivating apparatus for rotifers, for example, methods and apparatuses for cultivating them in pipes with at least the upper half upright while temporarily supplementing food are known. (Unexamined Japanese Patent Publication No. 58-13333) <Problems to be Solved by the Invention> However, the apparatus described in the above-mentioned Unexamined Japanese Patent Publication No. 58-13333 does not allow for the preservation and management of feeding insects that have grown to adulthood.
Although it is suitable for short-term rearing, larvae (body length: 3 m to 2 cm) are grown from commercial-sized adults (body length: approximately 20 cm).
Even if attempts are made to cultivate the larvae until they reach the age of about 1.5 m, the initial larval stages are weak and lack the ability to nest in upright pipes. Furthermore, there is no mention of the effect of improving the habitat, such as water replacement, and it is difficult to raise the insects from larva to adult stage for a long period of time.

In order to overcome the above-mentioned difficulties, it is an object of the present invention to provide a fishing bait insect farming device that efficiently and densely rears the caterpillars from larvae to commercial-sized adults in a short period of time.

<Means for Solving the Problems> The present invention provides a seawater supply chamber at one end of the aquarium, a drainage chamber at the opposite end, and a rearing room between the seawater supply chamber and the drainage chamber. A large number of flat plates for nesting with grooves dug are arranged at appropriate angles of inclination, and in the drainage chamber, there is a drainage lower part for running water shown above and a drainage outlet for lower level running water at a position higher than the top surface of the flat plates for nesting. The present invention relates to a culturing device for caterpillars, which is characterized in that:

In the course of research on breeding the caterpillar, the present inventors discovered that if there is a place where the insect's body can be easily supported, the early imprinted larvae will begin nesting there, and that the insect's body exerts a pumping effect due to its elastic movement. We found that this species has a habit of changing the seawater in its habitat in a timely manner to improve its habitat.

That is, there is a seawater supply chamber at one end of the aquarium, a drainage chamber at the opposite end, and a breeding chamber between the seawater supply chamber and the drainage chamber.
The rearing chamber is constructed by placing a large number of nesting flat plates with grooves dug at desired intervals from the bottom of the aquarium at suitable inclination angles for the caterpillars to live in, so that the upper and lower surfaces of the rearing chamber have running water. It is suitable for efficient and safe close breeding to provide a drainage outlet for running water and a drainage outlet for lower layer running water in the drainage room, so that the birds themselves can freely improve the habitat environment of their habitat. . Furthermore, since the nesting member is a flat plate, unlike the pipe shape described in JP-A-58-13333 mentioned above, there is no wasted space in the rearing room for seawater to stagnate, and the flat plate-like nesting member can be tilted. This allows the habitat to be divided appropriately and allows the caterpillars to live separately.

Function> The flat plate-shaped member for nesting of the present invention has a space formed by stacking flat plates with the grooves upward, which are formed by digging a plurality of grooves parallel to the short sides of a rectangle with an appropriate thickness. Since it is arranged in the rearing room at an inclined angle, larvae, food, etc. are difficult to fall off. In addition, the drainage room is equipped with separate drainage ports for water flowing above and below, allowing water to flow from the top and bottom of the breeding room, allowing the pumping action of insect bodies to flow from either the top or bottom of the habitat. Since the intake water can replace the water in the habitat, the caterpillar can live comfortably within the habitat tube.

<Examples> Examples of the present invention will be described with reference to the drawings, but the present invention is not limited to the examples.

Fig. 1 is a plan view in which a rearing room 5 is provided between the seawater supply chamber 3 and the drainage chamber 4 of the aquarium 1, and the drain chamber 4 is equipped with a drain port 6 for running water shown above and a lower drainage lower for lower layer running water. Figure 4 is a perspective view of a flat plate member 8 with nesting grooves 9 processed therein, and Figure 5 is a nesting hole with the divisions formed by stacking and tilting the grooves 9 of the nesting flat plate member 8 upward. FIG. 6 is a cross-sectional view of a groove 9 machined in the flat plate 8.

FIG. 2 is a cross-sectional view of a cultivation device suitable for raising caterpillars, which receives seawater from a seawater supply pipe 2 to a seawater supply heather 3.
Fill the breeding chamber 5 with seawater up to the top.

In the drainage chamber 4, the upper drain port 6 shown in Fig. 3 and the drainage lower for lower water flow are installed at a position higher than the upper surface of the rearing chamber 5, and the living environment inside the habitat tube is improved by the pumping action caused by the expansion and contraction movement of the insect body. In order to facilitate
Each is discharged to the outside of the tank.

Distance 1 between the drain ports 6 and 7 and the upper surface of the nesting flat plate member 8
"1 is 3 cm to 10 cm. The rearing room 5 is constructed by stacking flat plate members 8 with a plurality of grooves 9 for nesting as shown in FIG. It is preferable to arrange the nesting flat plate member 8 at an angle of 10" to 45 degrees, at an appropriate distance from the bottom of the tank, that is, 5 cm to 10 cm, and in a basin where seawater does not stagnate.

The rectangular nesting flat plate member 8 according to the present invention has a short side length of 40 cm to 5 cm, which is slightly longer than the body length of an adult caterpillar.
The shape of the burrow to be formed may be elliptical, triangular, square, etc. as shown in Figure 6. For example, in the case of a square, the diameter R of the inscribed virtual circle as shown in Figure 6. A suitable length is about 3# to 6m. Nesting flat plate member 8
The material is concrete, synthetic resin, etc., and is easily processed.

Further, the interval W between the grooves 9 to be processed can be selected depending on the breeding density. Breeding density is 400/Trt~500/
The buttocks are most preferred.

<Effects of the Invention> As is clear from the above explanation, the sardine worm culturing device of the present invention does not have wasted breeding space, that is, there is no place where the water is still, so the habitat environment is maintained in a good condition, and segregation is prevented. This will relieve stress on the caterpillars. Even the early stage larvae are difficult to fall off due to the sloping habitat, and the caterpillars can live comfortably from larvae to commercial-sized adults. Furthermore, since the breeding density can be artificially selected, survival rate, growth rate, and egg production rate are improved.

[Brief explanation of drawings]

Fig. 1 is a plan view of the rotary worm culturing device of the present invention, Fig. 2 is a cross-sectional view from work to work in Fig. 1, Fig. 3 is a cross-sectional view from ■ to ■ in Fig. 1, and Fig. 4 is a flat plate for nesting. FIG. 5 is a perspective view of the member, FIG. 5 is a superimposed perspective view of FIG. 4, and FIG. 6 is a cross-sectional view of FIG. 1... Water tank, 2... Seawater supply pipe, 3... Seawater supply room, 4... Drainage room, 5... Breeding room, 6... Drain port for running water shown above, 7...・Drainage port for lower water flow, 8...
Flat member for nesting, 9... Nesting groove Patent applicant Ube Industries Co., Ltd. Figure 1 2 ■ Figure 2 Figure 3 Figure 4 Figure 6

Claims (1)

[Claims] A seawater supply chamber is provided at one end of the aquarium, a drainage chamber is provided at the opposite end, and a rearing room is provided between the seawater supply chamber and the drainage chamber, and a large number of flat plate-like nesting members with grooves dug in the rearing room are installed. What is claimed is: 1. A rotary worm culturing device, characterized in that the drainage chamber is provided with an upper running water drainage outlet and a lower running water drainage outlet at a position higher than the upper surface of a flat plate member for nesting.