JP4112524B2 - How to rear fireflies - Google Patents

Description

The present invention relates to a breeding how fireflies, for more information, about the breeding how fireflies for the purpose of survival of fireflies turned into wings.

  As is well known, the number and existence of fireflies are greatly influenced by the environment, especially in areas near urban areas where deterioration of the environment is a problem. The fact is that is in danger. Therefore, since the area where many fireflies are growing proves that it has an excellent water environment, the presence of fireflies can be used for various PR in the environmental aspect.

  In order to meet such demands, artificially raising and releasing a large number of fireflies has been carried out in various places, and accompanying this, breeding equipment or breeding devices suitable for firefly breeding have been proposed. Yes. That is, firefly larvae hatched around June of the year need to be raised for about 10 months until March when iodination (iodination to pupae) begins.

  Therefore, for the period of about 10 months, a plurality of (for example, six) aquariums with gravel on the bottom and watered are set up to form a growth environment similar to a creek as much as possible. Inside, many firefly larvae were housed and raised. For this breeding, Kawanina, which serves as a food for larvae of fireflies, is regularly adjusted to the size and growth of the larvae. Maintenance, such as supplying clean water by always operating the pump, has been performed.

  As a specific example of this kind of breeding apparatus, for example, according to the following Patent Document 1, a porous plate for securing lower water is provided in a water tank, and a gravel layer for inhabiting a filter and firefly larvae is provided above the porous plate. And the upper water are arranged in sequence, and a water collecting pipe is provided that passes through them and leads to the lower water. Further, the water in the water collecting pipe is pumped to the upper water by a pump to circulate the water. An apparatus is disclosed. And the firefly breeding device disclosed in this document is to throw about 300 firefly larvae into the aquarium together with the kawainina serving as food, and make it reach the gravel layer.

  On the other hand, adult fireflies that have emerged are bred inside spawning boxes (breeding boxes for mating) that contain dry moss, but adults of fireflies live by sprinkling water droplets without ingesting food. Therefore, a technique of rearing and storing the firefly adults by regularly spraying water droplets into the inside of the spawning box using a spray bottle is employed. Such a method for raising and preserving an adult firefly is a method conventionally employed by the present inventors.

JP 2001-178309 A

  However, according to the breeding device disclosed in the above-mentioned Patent Document 1, although a large amount of firefly larvae are housed in the aquarium, a large number of firefly larvae are housed in the aquarium. Only ingestion of Kawanina, weak larvae will not be able to ingest Kawanina, and many larvae will die. Therefore, most of the firefly larvae that hatched around June died within a 10-month breeding period, and a sufficient number of larval larvae (the larvae whose body length was about 30 mm after repeated molting). The problem arises that it becomes impossible to secure larvae that become iridescent and pupae.

  Furthermore, in the breeding device disclosed in the same document, since there are a large number of firefly larvae, a large number of kawanin is inevitably administered. Therefore, the cutlets and carcasses left by the firefly larvae remain in the aquarium. It causes the situation that the water quality is polluted, and the water quality causes the firefly larvae to die. In addition, since the river cucumber remaining in the water tank is difficult to remove, there is a problem that the cleaning operation becomes very troublesome and complicated.

  On the other hand, as described above, in the method of rearing and preserving firefly adults inside the spawning box, there are variations in the emergence time of fireflies and the lifespan of the firefly adults is as short as about 10 days. Even if an environment close to nature is formed, the number of days that can be extended is limited, and most fireflies are killed by the day when many firefly adults are needed (for example, when there are events to watch fireflies) Invited a bug to do. For this reason, for example, there are very few fireflies growing up to the day of the event, and there is even a problem that the project related to fireflies ends up being unsuccessful due to insufficient PR for visitors.

The present invention, all SANYO been made in view of the above circumstances and technical aims to prolong the adult fireflies ized wing as possible.

Prior to the description of the method for breeding emergence fireflies according to the present invention, the firefly larva breeding method and the breeding apparatus proposed by the present inventors will be described separately from the present invention. That is, in this method for raising firefly larvae, water in an amount of 60% to 85% of the volume C was put into a cup-shaped container having a volume C of 70 ml to 150 ml, and a plurality of crushed stones were laid on the bottom. In this state, the inside of the container accommodates firefly larvae and kawainina, the number of the firefly larvae is one or two, and the plurality of crushed stones enter the firefly larvae on the back side. it is obtained by laying as clearance for is formed.

  According to such a method, since there are only one or two firefly larvae housed in the cup-shaped container, Kawanina, which is a food housed in the cup-shaped container, is also used. Thus, firefly larvae can be eaten without any shortage, and a situation in which a large number of firefly larvae cannot take kawainina as in the past is avoided. In this case, when the number of firefly larvae contained in the container becomes 3 or more, the battle for Kawanina is intensified, and the number of larvae that die without being able to ingest it gradually increases. Alternatively, if there are two animals, there is a tendency that they will not even compete for Kawanina, and the probability of death will be extremely low. Therefore, if a large number of cup-shaped containers, that is, small cup-shaped containers having a volume C of 70 ml to 150 ml, are prepared, it becomes possible to efficiently propagate the firefly's infancy larvae and thus adults.

  In addition, when there are one or two firefly larvae, the number of kawainina is inevitably small, so the amount of leftover food and carcasses by firefly larvae is drastically reduced, resulting in water quality. Contamination problems are moderately avoided. Therefore, not only the firefly larvae death problem caused by water pollution can be effectively avoided, but also the removal work of the leftover kawainina or its carcass can be easily performed.

  Further, the cup-shaped container has a volume C of 70 ml to 150 ml and contains 60% to 85% of water of the volume C. Above all, it is extremely advantageous. That is, if the volume C of the container is less than 70 ml, the living space of one or two firefly larvae becomes narrow and hinders the growth, and if the volume C exceeds 150 ml, the space is wasted. Since the breeding space becomes unreasonably wide, it is advantageous that the volume C of the container is within the above numerical range. Furthermore, if the amount of water is less than 60% of the volume C of the container, the growth of firefly larvae will be hindered. If the amount of water exceeds 85%, it will be easier for the fish to escape, so the amount of water is within the above numerical range. Is convenient. Considering the above matters, it is more preferable that the volume C of the container is 100 ml and the amount of water is 80 ml. In addition, since the container is cup-shaped, the advantage that it is convenient to carry can be enjoyed.

  Moreover, since a plurality of (for example, about 8 to 12) crushed stones are laid on the bottom of the container so as to form a gap for the firefly larvae to enter, Taking into account the fact that it is possible to molt well using the gap, and that there are many resting in the back of pebbles in nature, the existence of the above-mentioned crevice crevice leads to stress relief of firefly larvae .

  In order to improve the breeding method as described above, it is preferable to administer the river cucumber to the inside of the container at a frequency at which at least one river kinina is always housed in the container, and at least a week. It is preferable to change the water once. Furthermore, in order to take in air necessary for breeding from the surface of the water surface, it is preferable to open the top of the container, and considering the convenience of handling, the container is preferably a beaker.

  Moreover, if the wastewater obtained from the operation of the thermal power plant is used as the water to be put inside the container, not only can the wastewater be used effectively, but also when the environmental advantage of the thermal power plant is appealed. It will be useful.

The firefly larva breeding device is a device for breeding one or two firefly larvae inside a cup-shaped container, and the volume C is 70 ml to 150 ml in a cup-shaped container. One or two firefly larvae and at least one kawainina were placed inside the container with water in an amount of 60% to 85% of the volume C and a plurality of crushed stones laid on the bottom. accommodates the door, a plurality of crushed stone is obtained by laying as a gap for firefly larvae enters is formed on the back side.

  According to such a firefly breeding apparatus, the same effect as the breeding method described above can be obtained.

Here, the breeding method of the emerged firefly according to the present invention made to solve the above technical problem will be described. That is, in the method for raising fireflies according to the present invention, the emerged fireflies are stored in a petri dish and stored in a storage set at a temperature of 3 ° C. to 7 ° C., and the fireflies are put into hibernation, asphyxia, or the like The petri dish is taken out from the storage once or several times a day, and water drops obtained by operation of a thermal power plant are used to spray water droplets on the fireflies by spraying. While giving, it is raised for a predetermined period.

  According to such a method, it is considered that suppressing the activity of adult firefly larvae leads to suppression of senescence, so that it is possible to extend the life of adult firefly larvae. That is, according to experiments conducted by the present inventors, when storing firefly adults under natural weather conditions, more than half were killed in about 10 days, whereas When the adult firefly was stored in a storage set at a temperature of 7 ° C., it was possible to extend the life beyond 10 days at a ratio of 70% to 80%. In this case, the optimum temperature condition for more reliably extending the life was 5 ° C.

Then, the emergence firefly, when stored in the vault while accommodated in a petri dish, that Do is easy to take out. In addition, if the wastewater obtained from the operation of the thermal power plant is used as water for applying water droplets by spraying to the emerged fireflies contained in the petri dish in the storage , the wastewater can be effectively used. well, that Do not be useful at the time to appeal the superiority of the environment surface of the thermal power plants. Further, if the coercive pipe box and a refrigerator, that Do is advantageous in temperature adjustment and cost.

According to the present invention for breeding how engaging sulfo barrel as described above, the firefly was emergence, 3 ° C. to 7-° C. to thereby stored in vault that is temperature setting, the firefly hibernation or asphyxia or these In the same manner, using the wastewater obtained from the operation of the thermal power plant, water droplets are given to the fireflies by spraying and kept for a predetermined period of time, so that the activities of the adult fireflies that have emerged are appropriately It is understood that it is possible to prolong the life of firefly adults because it is suppressed and leads to suppression of aging.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

Prior to the description of the embodiments of the present invention, a firefly larva breeding method and breeding apparatus proposed by the present inventors will be described separately from the present invention. Figure 1 is a schematic front view showing the breeding instruments. As shown in the figure, this breeding instrument 1 is placed in a beaker 2 which is a cup-shaped container having a volume C of 70 ml to 150 ml (preferably 100 ml), and 60% to 85% (preferably 80%) of the volume C. ) Of water (water depth of about 40 mm) is stored, and 8 to 15 (preferably 10) crushed stones 3 are laid on the bottom. In this embodiment, the crushed stone 3 is laid on the top of the gravel layer 4, but the gravel layer 4 may not be formed. Note that the size (volume) of one crushed stone 3 is 10 times or more (about 10 to several tens of times) the average size (volume) of one grain of sand in the gravel layer 4. The beaker 2 accommodates two (or one) firefly larvae 5 and two (or one) riverina 6 serving as food. Further, on the back side (lower side) of the crushed stone 3, a gap through which the firefly larva 5 can enter is formed.

  When raising the firefly larvae 5 with the breeding apparatus 1 described above, in order to ensure that one kawainina 6 is always housed in the beaker 2, one kawainina 6 is used once a week. Administration into beaker 2 Thereby, the firefly larva 5 can surely ingest the food (kawanina 6). In addition, the exchange of water in the beaker 2 is performed about once a week by using the waste water obtained by the operation of the thermal power plant. In this case, the leftover food and dead bodies of the river kinina 6 by the firefly larva 5 can be easily removed because they are reared in small numbers. Moreover, since air can be taken in from the surface layer of the water surface, the growth of the firefly larva 5 is not adversely affected.

  Under these conditions, the experiment results when the firefly larvae 5 were bred using a large number of the above breeding devices 1 from around June to around March in the following four years are shown in Table 1 and Table 1 below. It shows in Table 2. Table 1 below shows the embodiment of the present invention and the conventional example (when a gravel layer is formed in an aquarium and hundreds of firefly larvae are reared), It shows the survival rate before becoming (late February). Also, Table 2 below shows that the firefly larvae that survived in Table 1 grew up to the last-instar larvae (larvae whose body length was about 30 mm after repeated molting) for the embodiment of the present invention and the conventional example. It shows the end-of-life rate.

  According to Tables 1 and 2 above, the embodiment of the present invention feeds the fireflies larvae more evenly than the case where a large amount of firefly larvae are bred in a water tank as in the prior art. ) And the stress of the firefly larvae 5 can be alleviated, and it was confirmed that the survival rate was about 3.7 times that of the conventional and the age rate was twice that of the conventional.

Next, the breeding how firefly according to implementation embodiments of the present invention. For convenience, the following description will be given without using the drawings. In implementation form of this, the adult firefly that emerged, 3 ° C. to 7-° C. with (preferably 5 ° C.) is stored in the vault which is set at a temperature of, firefly hibernation or suspended animation for a predetermined period of time (e.g. 2 days to 1 week).

  In this case, as the storage, a temperature-controllable refrigerator is used, and the firefly adults that have emerged are stored in a petri dish in the refrigerator. Then, the petri dish is taken out from the refrigerator once or several times a day, and water droplets are imparted to the adult firefly by spraying using the waste water obtained by the operation of the thermal power plant.

  According to experiments conducted by the present inventors according to such breeding methods, when adult firefly worms were stored under natural weather conditions, more than half were killed in about 10 days. When the firefly adults were stored in a refrigerator set at a temperature of 5 ° C., it was possible to extend the life beyond 10 days at a ratio of 70% to 80%.

It is a general | schematic longitudinal front view which shows the firefly breeding instrument which the present inventors proposed separately from this invention .

Explanation of symbols

1 breeding equipment 2 cup-shaped container (beaker)
3 Crushed stone 5 Firefly larva 6 Kawanina

Claims (2)

The fireflies that have emerged are stored in a petri dish and stored in a storage set at a temperature of 3 ° C. to 7 ° C. to put the fireflies into hibernation or asphyxia or a state equivalent thereto , and once or several times a day Taking out the petri dish from the storage over a certain extent, and using the drainage obtained by the operation of the thermal power plant, raising water droplets by spraying the fireflies, and raising them for a predetermined period of time Characteristic firefly breeding method. The firefly breeding method according to claim 1 , wherein the storage is a refrigerator.