CATDOLL : CATDOLL: How are clams raised in supermarkets? What is the salinity of the brine?

1. How are clams raised in supermarkets? What is the salinity of the salt water?

Clams can survive normally when the salinity of brine is between 1.004 and 1.027, and grow best when the salinity is between 1.015 and 1.020.

1. Water temperature: Clams are euthermic shellfish. In natural sea areas, they can adapt to water temperatures ranging from 0 to 36 degrees Celsius. They grow normally when the water temperature is 5 to 35 degrees Celsius, and grow fastest when the water temperature is 18 to 30 degrees Celsius. The upper limit of the suitable temperature for clams is 43 degrees Celsius. When the water temperature rises to 44 degrees Celsius, the mortality rate reaches 50%; when the water temperature rises to 45 degrees Celsius, all of them die.

2. Dissolved oxygen: Clams can live normally in seawater with a dissolved oxygen content of 1 mg/L. Therefore, the dissolved oxygen content of normal seawater can meet the living needs of clams.

How to spit sand out of clams:

To make the clams spit out the sand quickly and cleanly, you can put an iron spoon, iron nails, etc. in the container. Shellfish have the habit of spitting out mud and sand when they smell iron, which will prompt the clams to spit out the sand automatically. You can also put the clams in an iron pot, leave it for an hour or two, and then wash it with clean water, which can also achieve the same effect.

In addition, you can also put some salt in the container where the clams are placed. Generally speaking, 1 spoon of salt is enough for 1 kilogram of clams, which can also make the clams spit out sand faster.

30 bar, specific gravity 1.020 is fine. That is 1L water 30g salt

Wouldn't it be better to use seawater essence directly? Ask the seller when you buy it.

Available at seafood stores

2. Do you need oxygen to grow clams? How high should the water level be? Do you use salt water?

Flower clams mostly inhabit inner bays with less wind and waves, and in mid- and low-tide areas with moderate freshwater inflow, but they are occasionally found in coastal islands with higher salinity and in subtidal zones several meters deep; the largest number of them inhabit mud flats with a sand content of 70% to 80%. Although they are also found in mud flats with little sand content and sandy or gravel areas with very little mud content, their numbers are very small.

The water quality requirements for clams:

1. Water temperature: Clams are euthermic shellfish. In natural sea areas, they can adapt to water temperatures ranging from 0 to 36°C. When the water temperature is 5 to 35°C, they grow normally, and the fastest growth is at 18 to 30°C. The upper limit of the suitable temperature for clams is 43°C. When the water temperature rises to 44°C, the mortality rate reaches 50%; when the water temperature rises to 45°C, all of them die; and when the water temperature drops to 0°C, the gill cilia stop moving and feeding stops; when the water temperature drops to -2 to -3°C, after 3 weeks, the mortality rate reaches 10%.

2. Salinity: Clams have a strong ability to adapt to changes in the specific gravity of seawater. When the specific gravity is 1.004-1.027, they live normally, and when the specific gravity is 1.015-1.020, they grow best. In the inner bay aquaculture area near the estuary without flood control dikes, a large number of clams often die in conjunction with flash floods. This is not only because the specific gravity of seawater drops sharply, but more importantly, the flood brings a lot of mud and sand, making the seawater turbid for a long time, affecting the breathing and feeding of clams.

3. Dissolved oxygen: Clams can live normally in seawater with a dissolved oxygen content of 1 mg/L. Therefore, the dissolved oxygen content of normal seawater can meet the living needs of clams.

4. Drought resistance: Clams living in the intertidal zone have strong drought resistance. The drought resistance time is related to the size of the clam, the temperature and ventilation.

3. What are the nutritional values ​​of clams?

The meat is delicious, nutritious, high in protein, and has a reasonable composition and ratio of amino acids; it has a low fat content, high in unsaturated fatty acids, is easily digested and absorbed by the human body, and contains various vitamins and medicinal ingredients. It contains a variety of essential trace elements for the human body, such as calcium, magnesium, iron, and zinc. It can be used as a nutritious and green food for humans and is deeply favored by consumers. Clam meat and shellfish mollusks contain Dalta 7-cholesterol and 24-methylene cholesterol, which have the effect of lowering serum cholesterol. They have the unique effect of inhibiting cholesterol synthesis in the liver and accelerating the excretion of cholesterol, thereby reducing cholesterol in the body. Their efficacy is stronger than the commonly used cholesterol-lowering drug sitosterol.

Clam meat has the effects of nourishing yin, improving eyesight, softening hard masses, and resolving phlegm. Some shellfish also have the effect of nourishing essence and moistening internal organs. Everyone can eat it. It is especially suitable for people with high cholesterol, high blood lipids, and those suffering from goiter, bronchitis, stomach problems and other diseases.

4. How can clams be eaten?

The meat of clams is tender, delicious, nutritious, inexpensive and can be boiled, fried, mixed or used as stuffing. In addition to being eaten fresh, they can also be canned, dried, etc.