Oysters, also known as oysters (Guangdong) and midges (Minnan), are also known as oyster seeds, oyster yellow, oyster white, green midges, oyster clams, oyster clams and clams. , generally refers to all bivalve mollusks of Oysteridea. "Oyster" in traditional Chinese medicine prescription refers to oyster shell.
Oysters are produced at the junction of seawater or brackish water and feed on plankton. In China, there was a custom of "planting bamboo and raising oysters" in the Han Dynasty. Shennong's Herbal Classic says: "There are three kinds of oysters, all born in the sea".
1, living habits-
The hard area of the seabed where oysters live is called oyster bed, which is located in deep or shallow seawater or salty estuary waters. Oysters live in the middle of intertidal zone. Mainly distributed in tropical and temperate zones.
China produces about 20 species from Bohai Sea, Yellow Sea to Nansha Islands, mainly including pleated oyster, compact oyster and long oyster.
2. How to eat
Raw food with lemon juice, spicy sauce or cocktail sauce, common in France, America, Australia and Vietnam.
Cooked food, such as salt, roast, soup, crispy fried, etc. , common in Taiwan Province Province, Japanese, Korean, China and other places.
Sun-dried products are common in China, Guangzhou and surrounding areas.
Extended data:
Morphological characteristics—
The shape of the shell is irregular, and its size and thickness vary from species to species. The left or lower shell is large and concave, attached to rocks or slabs, while the right or upper shell is small and flat with a cover. Feet without feet. The adductor muscle is only 1, and there are many small antennae outside the mantle, which are sensory organs.
The two shells of oysters are different in shape, and the surface is rough and dark gray; The middle part of the upper shell protrudes; The lower shell is attached to other objects, with large volume, quite flat and smooth edges; The inner surfaces of both shells are white and smooth.
The two shells are connected at the narrower end by an elastic ligament. There is a powerful adductor muscle in the middle of the shell to resist the tension of the ligament. When the shell is slightly opened, water is introduced into the shell through the wavy motion of cilia (the water flowing through it can reach 2-3 gallons per hour) to filter microorganisms.
References:
Baidu encyclopedia-oyster