The scientific name of sea oyster is Oyster oyster. There are two types of reproduction of oyster: larval type and oviparous type.

Oyster: A general name for the family Oysteridae of the Phylum Mollusca, Class Bivalvia, and the order Oyster.

Also known as sea oyster.

During the breeding season, oviparous oysters expel mature sperm and eggs from their bodies. The sperm and eggs are fertilized in seawater. After a period of floating life, they attach to other objects and metamorphose into juvenile oysters after fixation. Most of the cultivated species

It belongs to this type. When larval oysters reproduce, the parent body discharges mature reproductive cells into the water outlet cavity, relying on the action of the mantle and gill muscles near the drainage hole to press the reproductive cells into the gill cavity, where they are fertilized.

After the embryo develops into a larvae, it leaves the mother's body, undergoes a free-floating stage in the sea water, and then attaches and metamorphoses into spat. Oyster denticuli falls into this category. The gonads of oysters mature when they reach the age of 1 and begin to reproduce.

There are two types of reproduction: juvenile type and oviparous type.

The oyster is a larval type. When the eggs mature, they are discharged between the gill leaves in the mother's mantle cavity for fertilization and hatching. After developing to the larvae stage, they are discharged into the seawater for a floating life, and then metamorphose into adults for a sessile life.

Oysters are oviparous and fertilized outside the body.

The vast majority of long oysters are male and female conductors, and a small number are hermaphroditic.

When the gonads are mature, males are milky white and females are light yellow.

The gonads of long oysters begin to mature when the water temperature in the natural sea area rises to 16°C, and the peak spawning period occurs when the water temperature reaches 24-25°C.

The peak breeding season in the Yueqing Bay area of ??Zhejiang Province is from June to July.

Oyster spawning mostly occurs during spring floods.

When the water temperature is 23°C, the fertilized eggs develop into D-shaped larvae in 20-22 hours. At the water temperature of 23-26°C, after about 20 days of cultivation, the D-shaped larvae have an average shell length of more than 280 μm, and have

40%-50% of the larvae have eyespots. At this time, the attachment base should be put in to allow the larvae to metamorphose and attach. The finished oyster cake is round, golden in color, has a crispy shell, delicious filling, and a meaty taste, and can be eaten alone.

Most people in Fuzhou make oyster cakes as porridge and side dishes. If eaten with Dingbian paste, one is dry and the other is thin, and the flavor is delicious.

As mentioned before, the more popular way to eat oysters is to eat them raw.

There is a description in Maupassant's "My Uncle Jules": "Two beautifully dressed ladies ate oysters. They ate in a very elegant way, holding the oysters with a small handkerchief and stretching their heads slightly forward to avoid getting dirty.

Then, with a slight movement of his mouth, he sucked in the juice and threw the shell into the sea. "Buffets in Western restaurants usually have raw oysters.

A fellow countryman in Vancouver said that when we eat oysters in Canada, a SAMPLE plate has six types, two of each kind, which is a total of twelve oysters.

The most important thing is to eat different oysters and drink different wines.

But it is not easy to reach this state if you have to be a gourmet.

However, given the current environment, there is a lot of pollution along the coast, so raw food may not be suitable.

There are two other ways of eating recommended by gourmets: one is fresh oysters in a fire nest, and the other is pan-fried dried oysters.

Let’s talk about the fresh oyster fire nest first. Foodies require you to use mineral water to make a clear soup, add a little ginger slices and coriander, pour the water over the oysters, and cook for about 1 minute before eating. Dip in the seasoned ginger and garlic seasoning to make them fresh.

Sweet and delicious.

However, be sure not to add soy sauce to the sauce, as gourmets say soy sauce will destroy the flavor of oysters.

The other is pan-fried dried oysters, which uses raw and sun-dried oysters (dried raw oysters, not the so-called dried oysters mentioned above) as raw materials, and then fry the raw and sun-dried oysters until they are slightly charred.

Dish, sprinkle with sugar when eating, it is sweet and chewy, highlighting the flavor of oysters (raw and dried oysters, called oyster drums in Guangdong), making people have endless aftertaste.

Sea oysters are not only tender and delicious, but also rich in nutrients. They are known as "milk of the sea" and contain a variety of nutrients such as vitamins, taurine, glycogen and other minerals. Their iodine content is higher than that of milk and egg yolks.

200 times, its zinc content is the highest among other foods.

"Compendium of Materia Medica" says that "eating more oyster meat can refine and clean the skin, nourish the kidneys and strengthen yang, cure deficiency, and relieve erysipelas."

"Soup and Materia Medica" says: oyster "is a softening and hardening agent. Use Bupleurum to remove the hardness under the ribs; use Rong to remove tuberculosis on the nape; use Rhubarb to remove swelling between the thighs; use Rehmannia glutinosa to remove swelling between the thighs.

It is a medicine that can replenish essence, reduce astringency, and stop urination. ""Compendium of Materia Medica" says: "Cooking food is mainly used to regulate the blood and Qi of women... Eat it raw in ginger and vinegar.

"Essipelas, irritability after drinking, quenches thirst." "Yilin Zhuan Yao" says: "Sweet and salty, Huihan. Clears the lungs and nourishes the heart, nourishes yin and nourishes blood." "Food Secretary" says: "Clears heat, regulates the heart, and relieves pain."

"People's Republic of China Pharmacopoeia" records that oysters "soothe the mind, subdue yin and replenish yang, soften hardness and dissipate stagnation, astringe and solidify astringency, and are used for palpitations, insomnia, dizziness, tinnitus, scrofula and phlegm cough."

Symptoms include abdominal mass, spontaneous sweating and night sweats, spermatorrhea, vaginal discharge, and gastric acid pantothenic acid. "Sea oyster diet therapy is suitable for symptoms such as insomnia, restlessness, spontaneous sweating, night sweats, and spermatorrhea caused by long-term blood loss or Yin-Jin depletion after a long-term illness."

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According to unofficial legends, Napoleon liked to eat oysters during the campaign to maintain strong fighting energy; it is also said that Caesar's expedition to England was to obtain the plump oysters of the Thames River.

Balzac was even proud of being able to eat 144 oysters a day.

Song Meiling also often ate oysters to maintain her beauty.

Note: This article uses sea oysters instead of oysters. In fact, this is not accurate. Some estuaries and inlets are also artificially cultured.

There are many types of oysters.