Living habits

Fixed life

Fix by adhering the shell to other objects. [2] Generally distributed in intertidal zone and subtidal zone with water depth less than10m. [ 1]

resist

Oysters are also one of the most resistant aquatic animals. In the past 200 million years, the changing environment in intertidal zone has exercised the strong resistance of oysters to temperature, salinity, common pathogens in the open air and sea. When the water comes out at low tide, it can tolerate the hot and dry weather in summer and adapt to the freezing weather in winter successfully, and can survive without water for 1 ~ 2 weeks or even 1 month. [ 1]

sex reversal

In natural groups, most oysters are hermaphroditic, and a few are hermaphroditic. Oysters can also "degenerate" spontaneously, and the same individual shows different sexes in different years or under different environmental conditions. [ 1]

Eating habits

Filter food. [2] Feeding on microalgae and organic debris in the ocean. [ 1]

type

Documentary is the season of oyster love every spring, and its reproduction method is unexpected.

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Pay attention to 28,000 plays |02:30

According to statistics, a female oyster can lay as many as 400 million eggs in a breeding season, and the gonads of oysters are only fully developed in the breeding season. [ 1]

distribution range

Global distribution. China is rich in oyster resources, which is the hometown of oysters and has a long history of using oysters. As early as more than 2,000 years ago, residents in some areas along the southern coast of China mastered oyster culture technology. At present, there are oyster production bases in Bohai Sea, Yellow Sea, East China Sea and South China Sea, and the main producing areas are Fujian, Guangdong, Shandong, Guangxi, Liaoning and Zhejiang. Among them, oyster is the most important breed. [ 1]

oyster

principal item

Oyster is a worldwide shellfish, with more than 100 species found, and almost all coastal countries produce oysters. Japanese oysters are the same as those in Otawa and China. European and American oysters mainly include edible oysters, American oysters and European oysters, and the total output ranks first among shellfish. China began to cultivate oysters with bamboo in the Han Dynasty, and it has a history of more than 2,000 years. [3]

nutritional ingredient

As early as 1987, Japanese scholars made an in-depth study on the nutritional components of dried oysters and compared them with other seafood. The results show that oyster meat is rich in many minerals and trace elements, and its content is second only to that of black clam. It is much higher than other seafood such as clams, squid and sea cucumbers.