Are there any pearls in the mussels?

Question 1: pearls live in mussels, and there are not necessarily pearls in mussels. In fact, where it doesn't walk, its crawling ability is too weak. Look at this shallow ditch left behind it. You will know how hard it is to act. [] Mussels grow up day by day, and one day you will find something mysterious and noble in mussels, that is, pearls. So how do pearls grow in mussels? In ancient India, there was a saying that when an oyster opened its shell, raindrops from the sky fell into the shell and became dazzling pearls. In fact, the real cause of pearl is that other foreign bodies, such as insects and gravel, accidentally fall into the shell and destroy the epithelial cells of the shell. Then it is bred into a pearl sac, constantly secreting nacre, and then surrounding the pearl sac. As time goes on, pearls are formed. China is dotted with rivers and lakes and rich in mussel resources, which provides superior natural conditions for pearl culture. People began to use this unique way of forming pearls in mussels to cultivate pearls. However, not all mussels can be used to cultivate pearls. Most of the 140 species of mussels found in China are of low quality due to thin nacre or difficult operation, so they are of no use value. Among many mussels, the pearl produced by Hyriopsis cumingii is not only large and round, but also bright in color, which is the best variety for cultivating pearls. To cultivate pearls, a large number of Cephalotaxus fortunei are needed. The best way is to artificially breed male and female mussels. So how to distinguish the male and female mussels? Eat small fish, shrimp and algae. Artificial means putting a pearl of the right size in it, and it will secrete something to make it bigger ... let me perfect the answer. After the answer is passed, I can get three wealth values. The latest answer is: 20 12-02-0809.

Question 2: What kind of mussels contain pearls? Hyriopsis cumingii

Hyriopsis cumingii is commonly known as freshwater mussel, pearl mussel and triangle mussel. It belongs to freshwater bivalve mollusk, belonging to Claphabranchia, Pinctada and Mussel. Widely distributed in Hunan, Hubei, Anhui, Jiangsu, Zhejiang, Jiangxi and other provinces, especially Dongting Lake and medium-sized lakes in our province. The shell is large and flat, the surface is black or brown, thick and hard, nearly 20 cm long, and a sail-like tail extends upward from the rear edge, making the clam shape triangular. On the back of the spine, there are several oblique thick ribs composed of nodular processes. The nacre is thick and shiny. Hinges are developed. The left shell has two side teeth, and the right shell has two quasi-main teeth and 1 side teeth. Dioecious.

Hyriopsis cumingii lives in shallow mud bottom or shallow water layer, lives in a buried way and moves by extending its axe feet. It is a passive feeding animal, and the food brought by the water flowing into the body from outside is nutrition. Its diet is mainly small plankton, and it also filters small animal and plant debris. From April to May every year, when the weather is sunny and warm, and the water temperature is stable at about 65438 08℃, the mature eggs are discharged through the reproductive orifice and attached to the external branchial flap. At this time, the mature male * * * enters the outer gill flap with the water flow from the inlet pipe of the female mussel, and combines with the egg to form a fertilized egg. 1 month later, the fertilized egg develops into hookworm larvae and is excreted. When they meet a fish, they catch it with their feet and hook teeth and parasitize it. After about 20 days, they can develop into young mussels, fall off the fish and sink into the water for burial.

Hyriopsis cumingii is a unique mussel resource in China and an excellent material for pearl culture. The quality of pearls cultured with it is good. 80 ~ 120 mussels can cultivate 500 grams of seedless pearls, and there are also many precious pearls such as nuclear pearls, colored pearls and luminous pearls. Meat is edible; Meat shell powder can be used as livestock feed. Pearl pearl powder has the functions of clearing away heat, relieving convulsion, preventing corrosion, promoting granulation, improving eyesight and detoxicating, relieving cough and resolving phlegm. They are the main components of more than 20 kinds of Chinese patent medicines, which can be used to treat many diseases and have special effects of skin rejuvenation and whitening. Jewelry made of pearls is exquisite and beautiful, noble and elegant, and expensive, which can be used for foreign trade export.

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Question 3: Why do pearls grow in mussels? Parasites and foreign bodies invade the body, or mussels with diseased tissues will grow pearls. When you open a clam, you can see that the innermost layer of its shell is the most gorgeous and shiny, shining like a pearl. This is called "nacre" and consists of nacre secreted by the mantle. Pearls are also made of nacre.

When parasites enter the hard "house" of mussels, mussels are exposed to * * *, and its mantle will accelerate the secretion of nacre and wrap the parasites, which will form pearls after a long time.

Sometimes, when some sand or other things fall into mussels, they can't get rid of it for a while. After suffering * * *, they quickly used the mantle to secrete nacre to surround it layer by layer. After a long time, the sand arc was covered with thick mother-of-pearl and turned into a round pearl.

Question 4: How are pearls formed in mussels? The formation of pearl is due to the continuous accumulation of nacre secreted by some cells in the mantle of pearl oyster in connective tissue.

When small foreign objects accidentally enter the shell of shellfish, pearl oyster will feel uncomfortable. In order to eliminate the discomfort caused by this foreign body, it instinctively secretes nacre, which wraps this hateful foreign body layer by layer. After a long time, it formed a sparkling and lovely pearl. Small mussels turn pain into strength, gloriously create unparalleled jewels, and exchange their sadness for human joy.

Question 5: How to judge whether there are pearls in mussels? There is a saying in ancient India that when oysters open their shells, raindrops in the sky fall into the shells and become dazzling pearls. In fact, the real cause of pearl is that other foreign bodies, such as insects and gravel, accidentally fall into the shell and destroy the epithelial cells of the shell. Then it is bred into a pearl sac, constantly secreting nacre, and then surrounding the pearl sac. As time goes on, pearls are formed.

At present, pearls are all artificially cultured, and it is impossible to determine whether mussels have pearls from the appearance. Unless ... X-ray it!

Question 6: Do all mussels have pearls? That's not true. The formation of pearls is because foreign matter enters the mantle of mussels, and mussels secrete nacre to wrap the foreign matter and form pearls.

Question 7: What is the function of pearls in mussels? Beauty beauty, acne.

Question 8: Are there really pearls in mussels? Wild pearls secrete nacre because mussels enter the sand. The probability is low. So in ancient times, people called tens of thousands of mussels to find a pearl. Nowadays, pearls are all formed by artificial culture of mussels and shellfish, which secrete nacre. Generally, it takes many years, and it is necessary to control the breeding environment and breeding technology to harvest good pearls with good quality.

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Question 9: Are there any pearls in the mussels in the river? There may be mussels in the river, but they are rare.

Generally speaking, pearls grow in cultured mussels.

Question 10: Can mussels only produce pearls in the sea 1, pearls are divided into freshwater pearls and seawater pearls;

2. Mytilus is a freshwater creature, which will die if put into the sea;

3. All kinds of shellfish in nature are likely to produce pearls, but they are very rare, and the quality is even rarer, so the pearls are basically cultured now;

4, cultured pearls, generally freshwater pearls with Hyriopsis cumingii, seawater pearls with white butterfly mother-shells.