Introduction of Bombycidae Suppliers & Wholesalers
The silk moth is shaped like a butterfly and has white scales all over its body, but has lost its ability to fly due to the smaller two pairs of wings. The head of the silk moth is spherical, with bulging compound eyes and antennae; the thorax has three pairs of legs and two pairs of wings; the abdomen has no gastropods, and the terminal body segment has evolved into an external genitalia. The female moth is large and crawling slowly; the male moth is small and crawling faster, with its wings vibrating rapidly, looking for a mate. Generally 3 to 4 hours after mating, female moths can lay fertilized eggs. Silk moths (adults) leave offspring, which die shortly after. The eggs laid by silk moths → hatching silkworms → turning into pupae → moths will complete a new generation cycle. This is the life history of silkworms.
Introduction to Biology
Silkworm moth, the general name of the silkworm moth family of the order Lepidoptera.
Silkworm moths can refer to the general term of the entire Lepidoptera Cognacidae and Endomorphs, and there are more than 100 species of silkworm moths. Most of them can fly, and the common ones are wild silkworms and mulberries.
Silkworm moths can also refer to the adults of the silkworm. Their ancestors were able to fly, but now they have degenerated and cannot fly. As a result of long-term domestication by humans, their bodies are huge, and the two pairs of wings are smaller, so they have lost the ability to fly. Statement: Their flapping of wings does not mean they are flying.
Silkworm moth, also known as the original silkworm moth and the late silkworm moth in ancient times, is a homologous insect for food therapy. Silkworm moths have a long history of eating. As early as the Tang and Song Dynasties, they were regarded as a precious tonic by the royal family. Silkworm moth as a traditional Chinese medicine was first recorded in "Famous Doctor's Bilu", which is called "original silkworm".
distribution range
Mainly distributed in Ethiopia and East Asia. More than 10 species are known in China. Adults are medium-sized. Stout body. No beak, no feeding. Both male and female antennae are comb-shaped. Feet are woolly.
Morphological characteristics
The adult silkworm moth is covered with white scales and hairs. It has a small head, a pair of compound eyes, feathered antennae, degenerated mouthparts, and cannot eat food. The thorax has three pairs of legs and two pairs of wings. Due to long-term artificial rearing, the flight ability has deteriorated. Male moths are smaller than female moths and have longer pinnate branches on their antennae.
The larvae are called silkworms, also known as silkworms, and have 13 body segments, which are bluish-white or reddish in color, with or without spots. Mouthparts chewing type; there is a small hole in the center of the lower lip, called the spinning hole. The chest has three pairs of feet, which can hold the mulberry leaves; the abdomen has five pairs of feet, the first four pairs can make the body move forward, and the last pair is called tail feet, which can fix the body on the mulberry leaves. There are many air vents on both sides of the chest and abdomen, which are the portals of the respiratory system in the body to the outside world. The main food is mulberry leaves. After four molts, it matures, stops eating, spins silk to make a cocoon, and pupates in the cocoon. The pupa emerges into a moth and emerges from the cocoon. Silkworm cocoons can be reeled. China is the first country to raise silkworms and utilize silkworms.
Adults are medium-sized. Stout body. No beak, no feeding. Both male and female antennae are comb-shaped. Feet are woolly. The larvae have a smooth body and a short horn on the back of the 8th abdominal segment. Before pupation, the larvae spin silky cocoons. Silkworm is the world's silkworm, originating in China, and has spread all over the world. Domesticated from the wild for domestic feeding, it has a history of more than 4,000 years in China. It has been bred and differentiated into many varieties in various places, and the silk color is white and yellow. The host is mulberry.
Both male and female moths are densely covered with white scales, with a body length of 1.6 to 2.3 cm and a wingspan of 3.9 to 4.3 cm. The head is smaller. One pair of compound eyes, black, semi-circular, with degenerated mouthparts and small lower lip whiskers. Antennae 1 pair, feathery, thick at the base, tapering at the end. The antennae of female moths are gray and shorter, while males are black and longer than females. The anterior thoracic and midthoracic segments are anastomosed. Two pairs of wings, both covered with white scales, the front wings are located in the mid-thorax, triangular, larger, with 3 light dark horizontal stripes, the hind wings are born on the back of the thorax, small, slightly rounded, with 2 darker stripes colored parallel lines. Feet 3 pairs, tarsus 5, with 1 pair of black-brown claws, with cottony hairs. Female moths have a fat abdomen with blunt ends, while males have narrow abdomens with slightly pointed ends. The larvae is the Bombyx mori, cylindrical, gray-white, with dark markings, all sparsely yellow-brown short hairs, except the head, composed of 13 links, the head is small and hard, with single eye, antennae, lips, jaws and spinning tube . The first 3 segments are the thorax and the last 10 are the abdomen. The anterior thoracic segment is very small, with oval stomata on both sides, the middle and posterior thoracic segments are enlarged, and there are folds on the surface. 3 pairs of thoracic legs, 4 pairs of gastropods, and 1 pair of tail legs. There is a tail horn in the center of the back of the 8th section. There are silk glands in the body, which can secrete silk and spin silk as a cocoon.
main effect
An insect of the genus Bombyx of the family Bombycidae, order Lepidoptera, domesticated for its silk. Sericulture has a long history, and silkworms originating in China have been introduced to all over the world and have been domesticated. Adult moths have a wingspan of 40 to 50 mm (about 2 inches), a stout and hairy body, and a life span of only 2 to 3 days. They do not feed and rarely fly. About 300 to 500 eggs are laid. Larvae (silkworms) are white, hairless, with characteristic tail spines; feed primarily on mulberry leaves, sometimes mulberry orange or lettuce leaves; grow to a length of 75 mm (about 3 inches) after 45 days. When mature, the larvae spit out a continuous strand of silk about 915 meters (1,000 yards) long, forming a cocoon in which to pupate. To access the silk, the pupae are killed with hot air or steam, keeping the silk intact.
Nutrients
The silkworm moth contains a lot of protein and fat. According to the determination, the protein content of the defatted silkworm moth is 69.9%, and it is a complete protein. The body is also rich in physiologically active substances, such as cytochrome C, vitamin B12 and phospholipids. The content of unsaturated fatty acids in fatty acids is as high as 78.6%, and essential fatty acids account for 43%. It is a good product of the same origin of medicine and food, which integrates diet therapy, health preservation, and health care benefits.
In the male silk moth (g/100g food portion), the water content is 63.2, the protein is 13.9, the fat is 17.0, the carbohydrate is 1.56, and the ash content is 4.34. Among them, the amino acid content of silkworm moth protein (mg/100g food portion) reaches 14400, which not only has a complete range of amino acids, but also has a balanced ratio and an appropriate ratio, which is higher than the protein amino acid scoring model recommended by the World Health Organization and the United Nations Food and Agriculture Organization (WHO/FAO). 5], silkworm moth minerals and trace elements (100g food portion) contain potassium 125mg, sodium 2.65mg, magnesium 9.90mg, iron 0.44mg, manganese 0.02mg, zinc 0.03mg, copper 0.03mg, phosphorus 425mg, selenium 700mg, selenium 0.03mg The content has been checked in the "Food Composition Table" and there is no food that exceeds it.
larva
The larvae of silk moths are called silkworms. Eating mulberry leaves and spitting out a large amount of silk for cocooning before pupation is an important textile raw material. Also known as "silkworm", abbreviated as silkworm, one of the economic insects that feed on mulberry leaves and spin cocoons. The silkworm was domesticated and is homologous to the wild mulberry silkworm that eats mulberry trees in China today, with 28 pairs of chromosomes. The development temperature of silkworm is 7-40℃, and the optimum temperature for feeding is 20-30℃, mainly distributed in temperate, subtropical and tropical regions.
Silkworms are completely metamorphic insects, and they go through four developmental stages that are completely different in morphology and physiology in their life, including egg, larva, pupa, and adult. Egg is the stage of embryogenesis and development to form larvae, larvae is the growth stage of ingesting food and nutrition, pupa is the metamorphosis stage of transition from larvae to adult, and adult is the reproductive stage of mating and laying eggs to reproduce offspring. The entire generation feeds only in the larval stage and stores nutrients for life activities in the pupal and adult stages.
Silkworms are oligophagous insects. In addition to eating mulberry leaves, they can also eat zhe leaves, elm leaves, crow onions, dandelions and lettuce leaves. The nutrients necessary for silkworms include protein, carbohydrates, lipids, vitamins, inorganic salts and water. Mulberry leaves are the most suitable natural food for silkworms. After nibbling mulberry, the larvae grow rapidly. Under suitable temperature conditions, a silkworm will shed its skin once every 6-9 days from hatching to spinning and forming a cocoon. It takes about 24-32 days in total, and it takes about 20-30g of mulberry leaves ( 5-6.2g of combined dry matter), generally after four times of sleep and molting, when the growth is extreme, the body weight will increase by about 10,000 times.
Spinning silk and forming a cocoon is an instinct of silkworms to adapt to the environment and survive.
Silkworm cocoons can be reeled, and silk is a precious textile raw material, which is also widely used in military industry and electricity delivery. Silkworm chrysalis, moths and silkworm dung can also be used comprehensively. They are raw materials for various chemical and pharmaceutical industries, and can also be used as plant nutrients.
Male silk moth
The consumption of male silkworm moths has a long history in China, and was regarded as a precious tonic by the royal family as early as the Tang and Song Dynasties. Scientific research has shown that male silkworm moths are rich in active substances and male hormones, which have significant effects on enhancing human immunity and sexual function. It is rich in cytochrome C, vitamin B12, niacin, a-ecdysone and B-ecdysone and other ingredients, which have excellent effects on regulating human body functions. Phosphorus, which has the effect of invigorating the brain, is also extremely rich and has a beneficial effect on intelligence. Among them, brain hormones have excellent health care effects on middle-aged and elderly people. Taking a certain amount of brain hormones can promote cell growth, stimulate dermal cell division, control the synthesis of specific proteins, and achieve the function of anti-aging. The fatty acid content of male silk moth is high, and its saturated fatty acid content reaches 78.6%, and the essential fatty acid accounts for 3%. Essential fatty acids are kidney-invigorating and aphrodisiac drugs, and are the necessary precursors for the synthesis of human prostaglandins. If there is a lack of essential fatty acids in the diet, the precursors for the synthesis of prostate can be ensured on this basis to avoid compensatory enlargement, which can further alleviate symptoms, which justify its role in health care.
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