CATDOLL : CATDOLL: How to raise maggots

How to raise maggots

Maggots are the larvae of houseflies. The body color of maggots changes from transparent, milky white to creamy yellow until they mature and pupate. Maggots have three instars: the first-instar larvae are 1 to 3 mm long and have only the posterior spiracles. After molting, they become the second-instar, 3 to 5 mm long, with anterior spiracles and 2-lobed posterior spiracles. After molting again, they become the third-instar, 5 to 13 mm long, with 3-lobed posterior spiracles. The third-instar larvae are long conical, with a pointed front end and a truncated rear end, without eyes or legs. They like to drill holes, are afraid of strong light, and live in dark places away from light all day long. Maggots are high in crude protein and crude fat, rich in nutrition, and are an ideal food for forest frogs.

The optimum environment temperature (culture medium temperature) for fly maggots is 34-40℃, and the development period is 3-3.5 days. When the temperature is 25-30℃, the development period is 4-6 days; when the temperature is 20-25℃, the development period is 5-9 days; when the temperature is 16℃, the development period is as long as 17-19 days. The minimum development temperature is 8-12℃, and death occurs when it is higher than 48℃.

The suitable humidity for 1st to 2nd instar maggots is 61% to 80%, and the best humidity is 71% to 80%. The suitable humidity for 3rd instar maggots is 61% to 70%. If the humidity is higher than 80% or lower than 40%, they cannot develop normally, rarely pupate, and may even die.

Air circulation is conducive to the growth and development of maggots. In garbage dumps, maggots are often distributed in corners and wall bases with large gaps. Exhaust fans should be installed in the breeding room, and screens should be installed on the exhaust fans for filtering to prevent flies from escaping from the fan outlet. Doors and windows should be sealed with wire mesh to prevent snakes, rats and other harmful creatures from entering the breeding room.

Fly maggots are omnivorous and like to eat decayed and fermented organic matter. Animal and plant feeds and proteins in microorganisms are all feeds that fly maggots like to eat. When the third-instar fly maggots mature, they stop eating, leave the breeding place, and burrow into the nearby loose soil to pupate.

In artificial breeding, livestock and poultry manure is mainly used as the base material, and fresh is better. Livestock and poultry manure must be fermented before use. Pig manure, chicken manure, tofu dregs, wheat bran, livestock and poultry scraps, etc. can be fermented and used as the base material for fly maggot breeding.

The base material can be mixed according to the following formula: 80% pig manure, 20% wheat bran; 60% pig manure, 40% chicken manure; 75% pig manure, 25% tofu dregs; 100% fresh pig manure; 50% chicken manure, 25% pig manure, 25% tofu dregs. If the manure is too wet, a small amount of wheat bran can be added. According to the existing conditions, see which base material is easy to obtain and low in cost, and prepare it flexibly. Add EM live bacteria to the prepared manure, add 5 kg of EM bacteria per ton, then cover it with plastic film, turn the manure once on the third day, and then add 3 kg of EM bacteria to the manure to make the pH of the manure reach 6.5-7. If the pH is higher than 7, add wine lees and vinegar; if it is lower than 6.5, add lime water. It can be used after fermentation for 2 days. The water content of the base material is about 70%, and it is better to pile it up to 20 cm high without loosening or deformation.

After the base material is fermented, it can be sent to the maggot breeding room to breed fly maggots. A rectangular maggot breeding pool with an area of ​​1.5 square meters can be built in the maggot breeding room. The fermented base material is piled in the pool in a long strip with a thickness of 10 to 15 centimeters. Let the adult flies lay eggs directly on the base material, and cover them slightly with base material or feed after laying eggs to prevent the fly eggs from drying out. When the room temperature is 25 to 35 degrees Celsius, the egg mass will hatch into maggots after eight to ten hours. If the base material is too dry, sprinkle a small amount of water on it. The amount of water added should be appropriate so that the water does not flow out of the manure pile.

Put a small amount of sawdust in a small wooden box, and place the fish head or large bone in a windless and shaded place. After 4-5 days, the fish will become maggots. Pick out the maggots one by one, put them into a bottle with wheat bran, and let them grow for two days. The maggots keep rolling in the bottle, which not only cleans their bodies and exercises their skin, but also spits out the dirty water. The body is white, the skin is firm, the meat is thick, and the belly is hollow. It is not easy for fish to bite and break the skin. It is very suitable for

Can bamboo shoot maggots be raised artificially? Also, is there any information about it? Thank you

Yes, look at the following: In the bamboo village of Leshan, Dezhou, the villagers have a long history of eating insects, and the bamboo village specialty bamboo shoot maggots are the best among all the insects they eat. Now, under the influence of the insect-eating craze, the big hotels and small restaurants in the bamboo village are vying to launch bamboo shoot maggots, a bamboo village specialty dish.

Bamboo shoot maggots are the larvae of bamboo shoot weevils (called "sun jin" by local people). Bamboo shoot weevils bore a hole in bamboo shoots and lay eggs in it. Within a few days, a bamboo shoot maggot hatches in the bamboo shoot. This bamboo shoot maggot chews bamboo shoots all day and night. In a week, it grows from the size of a grain of rice to the thickness of a finger. After it matures, it bites off the bamboo shoot tails where it hides and falls to the ground with the bamboo shoot tails. Local people call it "egg-dropping" bamboo shoot maggots. After the bamboo shoot maggots "lay eggs", they dig deep holes in the ground. After digging the holes, they tear the bamboo shoot tails into pieces and drag them into the holes to make cocoons, and then pupate. Children like to play in the bamboo forest, and they like to dig "egg-dropping" bamboo shoot maggots even more. When they see the bamboo shoot tails stuck in the ground, they pull them up and find the hole in the ground. They pull a grass stem into the hole. When they let go and find that the grass stem moves, they know that the bamboo shoot maggots have not dug the hole deep enough, so they use a bamboo stick to dig hard. If they dig deep, it will be difficult to dig. The villagers mostly catch bamboo shoot maggots that are about to lay eggs. In late summer and early autumn, the mountains are covered with small green-skinned bamboo shoots. When people go up the mountain and see the yellow and dry ends of the bamboo shoots, they know there is something inside. They pull the bamboo shoot tail and it breaks off with a "pop", revealing a fat and white bamboo shoot maggot that wriggles and tries to shrink into the bamboo shoot tail.

Villagers eat bamboo shoot maggots, both cooked and raw. Some people catch plump bamboo shoot maggots in the mountains, twist off their heads and put them in their mouths, saying that the more they chew, the more delicious they become. Children love to play with bamboo shoot maggots, tie them up with strings and let them fly buzzing, and when they get tired of playing, they bite off a piece of their buttocks and eat them raw, which is also a way to eat them. Of course, the taste of raw ones is far worse than that of cooked ones.

Every late summer and early autumn, bamboo shoot maggots are in great demand in Zhuxiang. Every afternoon, the streets of the county are filled with buckets of bamboo shoot maggots. Bamboo shoot maggots are really delicious, and recently people have discovered that they have the effect of "strengthening yang", and they are called the "Viagra" of bamboo shoot insects. Although the market price is as high as more than 40 yuan per kilogram, they are still in great demand. Bamboo shoot maggots are fried in oil pans, and the fragrance spreads to the neighbors. Their taste is far better than other insects. Zhuxiang Lieting Hotel uses a variety of cooking methods to prepare bamboo shoot maggots, fried bamboo shoot maggots with pepper and salt, baked bamboo shoot maggots, soy sauce... Once the guests from other places taste it, they exclaim! The restaurant also uses pepper and salt weevils as appetizers. This thing has a hard shell and tastes worse.

Nowadays, the dish of bamboo shoot maggots has gradually spread to neighboring counties and cities. If you want to eat the authentic good stuff, you have to go to the Muchuan Bamboo Village in Leshan.

Bamboo worms are also known as bamboo bees and bamboo maggots. Guangning people call them "bamboo shoot maggots". They eat young bamboo shoots to absorb nutrients. Within 20 days, they grow from the size of a rice grain to the size of a finger. They live in bamboo tubes, eating from the tip of the bamboo to the bottom section by section, and finally hide in the roots. When they are fat, they stop eating and prepare to break out of the pupa.

It is generally acknowledged that bamboo worms are rich in high protein and amino acids. Looking at the appearance of bamboo worms, they are fat and white, about 3 cm long, spindle-shaped, round, with small black mouths and small eyes. Some people praise them for being cute, while others hate them for being disgusting. However, bamboo worms are sweet and fragrant, like the taste of butter.

Wild onion is a special delicacy from Xinjiang. It is said that it is in season from May to June every year. It is not only green, but also has the effect of strengthening the body. At present, Xinjiang Building Bogda Food Paradise is airlifted from Xinjiang every day, which is the essence of heaven and earth.

Bamboo maggots are a delicacy for entertaining guests. After more than two years of field observation and indoor artificial breeding, we have learned about their life history and basic biological learning characteristics.

The adults of this insect occur from July to September every year, and the peak period of adult emergence is from mid-July to mid-August. Adults mate and lay eggs at night, and the eggs are laid in blocks on the bracts or epidermis of the bamboo shoots; the egg period is 12-18 days; after the larvae hatch, they crawl to the tip of the bamboo shoot, gather into a small piece at an appropriate place, and take turns to bore a hole in the middle, which we call the entry hole. All newly hatched larvae drill into the bamboo shoot cavity through the entry hole within 10 hours; after entering the bamboo shoot cavity, the larvae collectively bite another hole in the bamboo shoot node or the previous bamboo shoot node, which we call the exit hole, which is reserved for the adult to exit the bamboo in the future; the larvae ascend each node in the bamboo shoot cavity, while eating the bamboo membrane and the inner wall of the bamboo, and bore a hole through the horizontal septum in the node, which we call the passage hole. If a bamboo shoot has two egg masses, the larvae hatched from each egg mass will have their own entry hole, and the transverse septum of the bamboo node will also have its own passage hole, and each will go its own way; the larvae will bore into the bamboo wall node by node as the shoot grows and move upward, and will molt four times within 40-45 days after entering the bamboo cavity to become fifth-instar worms; about 60 days after entering the bamboo cavity, the fifth-instar worms will move down along the passage holes on the transverse wall of the bamboo node to the bamboo node where they initially entered the bamboo or the previous node, where they will spin silk and secrete sticky substances to form a thin film that sticks to the inner wall of the bamboo cavity and hang on it to overwinter; the overwintering larvae will not begin to pupate in the bamboo cavity until mid-to-late May of the following year. The entire larval stage is about 300 days long, spanning one half year and one half year; in early July, the pupae begin to emerge as adults, and the pupal stage is about 50 days.

The bamboo shoot borer has one generation per year in Dehong Prefecture. It has been preliminarily identified as a new species by relevant experts. The bamboo shoot borer is our initial proposal, and the scientific name of the bamboo shoot borer has yet to be named by relevant experts after identification. The life history and biological characteristics of the bamboo shoot borer are the first observations and studies reported at home and abroad.

Keywords: Bamboo shoot borer, biological learning, research

The "bamboo maggots" that people in Dehong Prefecture eat in large quantities are the larvae of a nocturnal insect in the Lepidoptera order that has not yet been academically defined and its biological characteristics have not been fully described. After more than two years of observation and research, we have figured out the biological characteristics of this unknown insect and temporarily named its adult insect "bamboo shoot borer" in Chinese. The reasons for this name are: ① its larvae only eat the inner wall of tender bamboo shoots, stay in the bamboo cavity for up to 10 months, and overwinter and pupate in the bamboo cavity; ② its emergence, mating, and egg-laying behaviors are all carried out at night; ③ its eggs are laid by adults on the outer surface of tender bamboo shoots, and the small larvae hatched from the eggs all enter the tender bamboo shoot cavity through the entrance hole within 10 hours. Since 1999, under the guidance of our teacher, we have conducted detailed observations and studies on the life history and biological characteristics of bamboo shoot borers using the larvae "bamboo maggots" as clues, and the results are as follows.

1. Indoor breeding research under artificial conditions

The first set of observation experiments.

Since September 2000, we have placed fifth-instar mature larvae into young bamboo shoot tubes and observed the results of artificial breeding indoors using the following five methods.

1. On September 7, 40 mature larvae of the fifth instar were placed in the bamboo shoot tube without changing the bamboo shoots. As a result, the larvae gradually shrivelled and died as the bamboo shoots dried up. By the end of November, all of them had died. See photos 1 and 2

2. On September 7, 60 5th-instar mature larvae were placed in the bamboo shoot tubes. The tubes were changed every 15 days. Each time the tubes were changed, the larvae would spin silk to form a circular film. As a result, the larvae gradually became thinner and died. By the end of December, all the larvae had died. See photos 3 and 4.

3. On October 7, 50 mature larvae of the fifth instar were placed in the tender bamboo shoots, and the tender bamboo shoot tubes were placed in water. The tender bamboo shoot tubes and water were changed every 15 days. From December onwards, the larvae gradually became thinner and smaller, and died one after another. From February 2001, the tender bamboo shoot tubes and water were changed every 30 days. By May 26, 2001, only 8 larvae that had survived had turned into thin and shrunken pupae. By the end of August, no pupa had emerged as an adult. See photos 5, 6, and 7.

4. On September 27, the bamboo with 5th-instar mature larvae was moved indoors with the bamboo roots and cultured in live bamboo (bamboo inserted in a bucket). The bamboo was opened at the end of December and the larvae were observed to survive normally. After observation, it was sealed again. On May 18, 2001, pupation began. The pupae were smooth and plump, not much different from the pupae in the wild natural bamboo forest. On May 8, the bamboo died due to rotten bamboo roots, but the larvae living in the bamboo were not affected. On May 18, the bamboo was opened for observation and then sealed again. On June 20, the bamboo was opened and counted, and 87 pupae were found in the bamboo, and 2 larvae were dead. On June 27, the pupation rate of larvae in the bamboo reached 99%. The pupae and bamboo were placed in a specimen box. On August 11, the pupae began to emerge as adults, and on August 27, a total of 78 pupae emerged as adults. Among these adults, 21 adults had incomplete wing development. The female adult with fully developed wings lays white eggs in the specimen box on the 3rd or 4th day after emergence. The eggs never hatch. The life span of both male and female adults does not exceed 6 days. See photos 8, 9, 10, and 11

5. On January 10, 2001, we placed the two bamboo tubes A and B in the constant temperature and humid environment of the Luxi Veterinary Station at 25°C for 10 days, 27°C for 20 days, 29°C for 22 days, and 30°C for 25 days for cultivation and observation. On May 17, we opened the bamboo for observation. There were round membranes and a large number of horizontal threads in the bamboo. Five larvae began to pupate, and the larvae were relatively thin. On June 20, 57 shrunken pupae and 77 dead larvae were obtained. The pupae were placed in a specimen box and began to emerge on July 16. By the end of August, 47 pupae had emerged in the bamboo tubes into adults with quite incomplete wings. The female insect laid white eggs in the specimen box on the second day after emergence. The lifespan of both male and female adults does not exceed 3 days, and the eggs laid have never hatched. See photos 12, 13, and 14

Observational study conclusion 1:

In the experiment of cultivating 5th-instar mature larvae in artificial indoor specimen boxes, we collected a total of 152 pupae. By the end of August, 97 pupae had emerged as adults, 51 adults were fully developed, 68 adults were incompletely developed, no mating behavior was observed, and none of the eggs laid by female insects hatched into larvae. From this set of experiments, we concluded that although 5th-instar mature larvae no longer eat the inner wall of bamboo shoots, they must live in the sealed inner environment of the living bamboo cavity with no light, little air permeability, and dampness to complete the physiological preparations for pupation, emergence, mating and egg laying.

The second set of observation experiments.

Since July 2001, we have moved young bamboo shoots with 1st, 2nd, 3rd and 4th instar larvae to the Biotechnology Activity Room and conducted artificial breeding observations and studies using the following four methods. The details are as follows:

1. On July 27, we sawed off the tender bamboo shoots below the "entry hole" in the wild environment where larvae had just entered, and moved them to a bucket for observation. After the 10th day, the bamboo shoot fibers aged significantly, and on the 15th day, we dissected the bamboo shoots. We observed that in the 3rd and 4th bamboo node cavities above the entry hole, there were all dead 2nd instar larvae and the first molted skins, the bamboo membrane was not obviously infested, there was only a small amount of excrement in the bamboo cavity, and the exit hole had been made. See photos 15 and 16

2. On August 7, bamboo shoots with 2nd instar larvae in the wild (7th day after the larvae entered the bamboo) were cut and moved into a bucket indoors for observation and research. After the 10th day, the bamboo shoot fibers aged significantly, and on the 15th day, the bamboo shoots were dissected. It was observed that in the 6th and 7th bamboo node cavities above the entry node, there were dead 3rd instar larvae and the second molted skin, the bamboo membrane was obviously eaten, and the excrement in the bamboo cavity increased and was spongy. See Photo 17

3. On August 17, we sawed off the bamboo shoots with 3rd instar larvae in the wild and moved them into the bucket in the biological room for observation. On the 6th day, the larvae had eaten through the horizontal wall of the bamboo shoots, causing holes to appear in the walls of the 7th, 8th, and 9th bamboo nodes above the entry hole. The larvae kept crawling in and out of the holes, showing a state of being in a hurry to find food because of the lack of food and hunger. On the 8th day, we dissected the bamboo shoots, and found 77 4th instar larvae and the third shed skin in the cavities of the 7th, 8th, and 9th bamboo nodes above the entry hole. The bamboo walls and bamboo tips of the 7th, 8th, and 9th bamboo nodes were severely eaten and rotten. There was a large amount of sponge-like mixture in the cavities of the 7th, 8th, and 9th bamboo nodes. See Photo 18

4. On August 25, the 77 4th instar larvae were moved into the cavity of another tender bamboo shoot for further observation. On the 5th day (August 30), the bamboo shoots were sawed open and the results were: 5th instar larvae and the 4th shed skin and sponge-like mixture were found in the shoot cavity, and the bamboo shoot wall was seriously eaten. On August 31, the 77 5th instar larvae were moved into the bamboo shoot No. 378 on campus, so that they could complete the process of overwintering, pupation, and eclosion in the living bamboo under natural conditions. See Photo 19

That thing is delicious, it has a lot of protein, and it is very delicious when grilled.