Scallops belong to the subclass Spodoptera, Pinctada, in the bivalve class of Mollusca. Scallops, like mussels and pearls, are also a kind of clams, living in shallow rocks or sandy seabed with enough silk. Generally, the right shell lies flat on the seabed, and the left shell lies flat on the seabed. Usually there are not many activities, but when you feel that the environment is not suitable, you can take the initiative to hang your feet and do a small range of swimming. In particular, young shellfish can quickly open and close their shells to drain water and swim quickly, which is quite special in bivalves.

catalogue

1. Living habits

2. Morphological characteristics

3. Distribution range

4. scallop selection

5. Nutritional value

Living habits

Scallop is a filter-feeding animal, which has the ability to choose the size of food, but has no ability to choose the species. Food with appropriate size is sent into the mouth with the oscillation of cilia, and inappropriate particles are discharged from the groin of the foot. Its food intake is related to the filtration rate, and the filtration rate is the lowest at night 1-3. So I eat the most at night. The main foods are organic debris, tiny particles suspended in seawater and plankton, such as diatoms, dinoflagellates and copepods. Followed by algae spores, bacteria, etc. Its food composition is consistent with the species in the environment.

morphological character

The scallop shell is fan-shaped, but the butterfly hinge line is straight, and there are wing-like protrusions at both ends of the butterfly hinge. The size is about 2.5 ~ 15cm (1 ~ 6 _). The shell is smooth or has radiating ribs. The ribs are smooth, scaly or nodular, and the colors are bright red, purple, orange, yellow to white. The lower shell is lighter and smoother. There is a large adductor muscle. There are eyes and short tentacles at the edge of the mantle, which can feel the change of water quality. When it is opened, the shell is located between the two shells like a curtain. Scallops are commonly found in sand or fine gravel in clean seawater. They feed on tiny organisms, collect food particles through cilia and mucus and move them into their mouths.

I can swim, jump intermittently with my double shells, spray water, and push myself forward by my own reaction. Eggs and sperm are fertilized in water, and the hatched larvae swim freely, and then the larvae are fixed at the bottom of the water, and some can crawl. After the larva is formed, the foot silk gland is used to fix on other things. Some are attached to life all their lives, while others wander freely in the middle.

Shells have two shells, almost equal in size, and the shell surfaces are generally purplish brown, light brown, yellowish brown, reddish brown, apricot yellow, grayish white and so on. Its shell is like a fan, so it naturally gets the name of scallop. The inner surface of the shell is white, the muscles in the shell are edible parts, and the scallop has only one obturator internus, so it belongs to the monotremes. The adductor muscle is white, tender, delicious and nutritious. When the muscles are dry, scallops are listed as one of the eight treasures.

distribution range

Widely distributed in all sea areas of the world, with the tropical sea being the most abundant. About 45 species of scallops have been found in China, among which northern scallops, southern scallops and long-ribbed scallops are important economic species.

Scallop selection

Selection of live scallops

First of all, we should choose scallops with uniform shell color, luster and size, but not too small, otherwise it is of little edible value because of less meat; Then see if the shell is open, the live scallop will close under the action of external force, but the dead scallop can't close after opening, so you can't choose.

Selection of frozen scallops

When buying chilled scallops, we should first look at whether their appearance is white, and then look at the output of pure scallop meat after thawing, the size and uniformity of particles, and whether there are many pieces and freshness, and then decide whether to choose. Generally, the yield is about 70%, and the chilled scallops with white color, large and full grains, high freshness and no broken grains, or with no more than 10 broken grains per 500g, are qualified products.

nutritive value

1, brain: rich in carbohydrates, essential energy for maintaining brain function.

2, eyesight: rich in calcium, increase the elasticity of the eye wall, prevent the occurrence and development of myopia.

3. Spleen and stomach strengthening: it is suitable for abdominal distension, loose stool, loss of appetite, limb weakness and other symptoms caused by spleen deficiency and asthenia of transport. Warming stomach and treating stomach cold.

4, moistening the intestines: cellulose can promote the peristalsis of the intestinal wall, help digestion, and prevent dry stools.

5, beauty and skin care: rich in vitamin E, inhibit skin aging and prevent pigmentation. Eliminate skin damage such as dryness and itching caused by skin allergy or infection.

6, blood circulation: suitable for people who have no luster, lose ruddy, cold hands and feet. High iron content and good absorbability.

7. Anti-cancer and anti-tumor: effectively prevent cancer and reduce the incidence of cancer. Delaying and inhibiting the growth and spread of cancer cells. Degenerate and shrink cancer cells.