CATDOLL : CATDOLL: How to breed water lice

Dytiscidae farming is a special animal farming project that has only emerged in the past two years. Dytiscidae are aquatic insects, and are the general name for all species of the Dytiscidae family. It has a large family, with about 160 species in my country alone, and the Japanese sucker Dytiscidae is the largest species of Dytiscidae. Because Dytiscidae are small and occupy little water space, they are suitable for farming in large water surfaces such as fish ponds, as well as in cement pools of several square meters or even smaller water tanks, and their economic value is relatively high.

The breeding technology of water lice is introduced as follows:

Breeding facilities

Water beetles are aquatic insects that are very sensitive to pesticides, fertilizers, and oil pollution. They are generally better cultured in ponds in the suburbs. They should not be cultured in polluted environments, especially places with oil pollution. The breeding facilities can be small fish ponds, pools, or water tanks. The pool is made of bricks, with an area of ​​less than 5 square meters and a water depth of 0.5 to 1 meter. 200 to 300 water beetles can be raised per square meter of water surface.

Farming management

The feed of water beetles is generally corn flour, rice bran, flour, sweet fruits and vegetables. They can also be fed with apple snails (crushed), pigs, chickens, cattle, and ducks. Feed once a day at 6 pm, and the feeding amount is 7% to 8% of the total weight of water beetles (about 0.15 grams per water beetle). Feeding cannot be done every other day to avoid cannibalism, and food with poison or infectious diseases cannot be fed, otherwise it will cause the water beetles to die or not reproduce for a long time. The breeding cycle of water beetles is about 8 months. In the first 3 months, they are mainly fed with meat, such as apple snails, beef liver, fresh dead fish, dead shrimp, dead ducks, dead chickens, etc., and in the last 5 months, they are mainly fed with mixed feed, apple snails, fruits and vegetables, etc. Water beetles have no special requirements for water quality. Generally, tap water, groundwater, natural water and other unpolluted water sources can be used. When the water is too dirty, pay attention to replacing new water.

Breeding precautions

1. Do not breed water slugs in chemical plants, lime plants, cement plants, and polluted environments. 2. Be careful to prevent theft, rats, and poisoning. Do not stir the water slug pool at will. 3. For semi-open-air water slug breeding, some aquatic plants must be planted in the pool, preferably water lilies. Put 2 cm thick yellow mud at the four corners of the pool bottom. Set up a drainage hole at the top and bottom of the pool. 4. Larvae and adults are kept separately, with large and small separated, and male and female matched. 5. When transporting water slugs, prevent the water from being too deep and the shaking from being too big to avoid the death of water slugs. It is not suitable for transportation when the temperature is above 36℃. If water slugs die of heat, stop the car immediately and flush the water for 30 minutes before continuing to drive. It is best to use a bamboo cage to transport water slugs, and put some weeds and green vegetables in it. Water it every 2 hours, and it can reach the transportation location safely. 6 Water slugs will fly into the air when they see the light at night, and are known as water, land, and air insects. You can solve your worries by adding anti-fly nets on the surface of the aquaculture pond.

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Artificial breeding

Dytiscidae, also known as water turtles, are aquatic insects. They are a general term for all species of the Dytiscidae family. It has a large family, with about 160 species in my country alone. The most common is the Japanese sucker Dytiscidae, as well as the black Dytiscidae and the Oriental three-star Dytiscidae. They are oval in shape, about 3 cm long, with black prothorax, dorsal plate, elytra, yellow-brown abdomen, slightly flat head, prominent compound eyes, filamentous antennae, and three pairs of legs. The front legs are small, and the hind legs are flat and have long hair. Dytiscidae are a traditional Chinese folk insect used for both medicine and food, specializing in treating many diseases such as enuresis in children, frequent urination at night in the elderly, and malnutrition.

Living habits

Dytiscidae live in freshwater environments for their entire lives, and their life cycle is divided into four stages. That is, egg - larva - pupa - adult, and the adult lays eggs again, and the cycle repeats. Dytiscidae are widely distributed in my country, mainly in Guangdong, Hunan, Fujian, Guangxi, Hubei and other provinces. In the past, people were used to catching them naturally, but due to environmental pollution and long-term overfishing, the ecological environment has been severely damaged, and the number of wild Dytiscidae has decreased year by year, resulting in a shortage of supply in the market. Therefore, artificial breeding of Dytiscidae is a good way to protect the ecological environment and make a fortune. For example, Zhao Zizhong, an employee of the Cao County Medicinal Animal Research Institute in Shandong Province, made a profit of more than 25,000 yuan in one and a half years of breeding Dytiscidae.

Nutritional Value

The nutritional value of water beetles is very high. The protein content in their bodies is as high as 23.8%, the fat content is only 3.6% and the ash content is 9.2%. It is a typical high-protein, low-fat, low-sterol food. Modern medical research shows that eating water beetles regularly has a good effect on preventing and treating hypertension, obesity and nephritis.

Artificial breeding

1. Environmental setting: Breeding should be done in places with less pollution as much as possible. The breeding farm should be far away from roads and factories (especially chemical plants) with more vehicles. The water body should be free of toxic pollution and kept at a depth of 50-100 cm. There is no need to change the water frequently, but the water should be free of stench. At the same time, it should be prevented from overheating in direct sunlight. Some aquatic plants, such as water lilies, should be planted in the water, and anti-fly nets should be added on the water surface.

2. Seedlings: Generally, you should purchase seedlings from reputable seed suppliers, which can not only ensure the quality of the varieties, but also allow the manufacturers to provide better technical guidance and technical consultation. You can also catch water lice larvae in fish fry ponds at the turn of spring and summer, raise them until they become pupae in autumn, and then emerge as adults.

3. Feeding: Dives are mainly carnivorous, but can also be herbivorous and saprophagous. They are good at catching small organisms in the water, organic matter and aquatic plants. Under artificial breeding conditions, the feed of water leeches is generally corn flour, rice bran, wheat bran and sweet fruits. They can also be fed with crushed golden apple snails and the scraps of pigs, chickens, cattle and ducks that are widely available in rural areas. They are generally fed once a day in the evening, with the feeding amount being 7%-8% of the total weight of the water leeches (each water leech eats about 0.15 grams). They cannot be fed every other day to avoid cannibalism. They cannot be fed with poisonous or infectious foods, otherwise they will cause the water leeches to die or be unable to reproduce for a long time.

The breeding cycle of water lice is 8 months. The first 3 months are mainly fed with meat, such as golden apple snails, beef liver, fresh scraps, dead fish, dead shrimp, etc. The last five months are mainly fed with mixed feed, that is, meat and herbivorous feed are mixed in a certain proportion and fed.

The method of breeding water lice is as follows:

1. Breeding facilities. Dytiscidae are aquatic insects that are very sensitive to pesticides, fertilizers, and oil pollution. It is generally better to build ponds in the suburbs for breeding. They should not be bred in polluted areas, especially in places with oil pollution. Breeding facilities can be selected from small fish ponds, pools, or water tanks. The pool is made of bricks, with an area of ​​less than 10 square meters and a water depth of 0.5 to 1 meter. 200 to 300 Dytiscidae can be raised per square meter of water surface. Seedlings should be purchased from reputable seed suppliers. Dytiscidae larvae can also be caught at the fry stage at the turn of spring and summer, and raised until they become pupae in autumn and then emerge as adults. Aquatic plants can be planted by the pool, and water plants can be raised in the pool.

2. Breeding management. The feed of water beetles is generally corn flour, rice bran, flour, sweet fruits and vegetables. They can also be fed with apple snails (crushed), pig, chicken, cow, and duck scraps. Feed once a day at 6 pm, and the feeding amount is 7% to 8% of the total water beetle (about 0.15 grams per water beetle). Feeding cannot be done every other day to avoid cannibalism, and food with poison or infectious diseases cannot be fed, otherwise it will cause the water beetle to die or not reproduce for a long time. The water beetle breeding cycle is about 8 months. The first 3 months are mainly fed with meat, such as apple snails, beef liver, fresh dead fish, dead shrimp, dead ducks, dead chickens, etc., and the last 5 months are mainly fed with mixed feed, apple snails, fruits and vegetables, etc. Water beetles have no special requirements for water quality. Generally, tap water, groundwater, natural water and other unpolluted water sources can be used. Pay attention to changing the water when the water is too dirty.

3. Notes.

① Do not breed water lice in chemical plants, lime plants, cement plants or in highly polluted environments.

② Pay attention to preventing theft, rats and poisoning, and do not stir the water pool of water beetles at will.

③ For semi-open-air water lilies breeding, some aquatic plants must be planted in the pond, preferably water lilies. Put 2 cm thick yellow mud at the four corners of the pond bottom. Set up a drainage pool at the top and bottom of the pond.

④ The larvae and adults are raised separately, with sizes separated and males and females paired.

⑤ During the peak period of adult infestation, use bait (near paddy fields and ponds) to trap the adults, put them in a pit, and add red nematodes (water earthworms), small fish and other aquatic animals.

⑥During transportation, water should be kept too deep and shaking too much to prevent the death of the water beetles. It is not suitable for transportation when the temperature is above 36℃. If water beetles are killed by heat, stop the vehicle immediately and flush the water for 30 minutes before continuing to drive. It is best to use a bamboo cage to transport water beetles, and put some weeds and green vegetables in it. Water it every 2 hours, and it can reach the transportation location safely.

⑦ Water beetles will fly into the air when they see light at night. They are known as insects that can fly on land and in the air. Anti-flying sand nets should be added to the surface of the breeding pond to prevent them from escaping. They can be caught at any time. Diseases are rarely seen, and there are few natural enemies.

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