How do crabs spend the winter

When the water temperature is below 8 degrees Celsius, crabs will sleep at the bottom of the pond or at the cadres, reducing their food intake. When the temperature is below 5 degrees Celsius, it will hibernate by exchanging dissolved oxygen and carbon dioxide with cheeks, and simply metabolize basic substances.

When the water temperature rises above 8 degrees Celsius, crabs will become active and start eating. Because of the long winter, high energy consumption, poor physique, cold and dry weather and lack of oxygen in water, crabs are easy to die.

The winter climate is dry, in the dry season, and the water source is insufficient. After freezing, the unfrozen water level will change with the change of soil quality, and the thickness of ice layer will increase with the decrease of temperature, which will lead to the decrease of water level. In order to ensure a certain water level, water should be injected 2-3 times in winter if conditions permit.

Extended data:

Habits of crabs:

Crabs like to live in rivers, lakes, mudflats of rice fields, caves on mudflats, and also like to hide in rocks and aquatic plants.

(1) caves

Crabs like to live in mud flats or caves on the beach in rivers and lakes, or hide in rocks and weeds. In tidal rivers, most of them are located between high and low water levels, while crabs living in lakes and reservoirs have scattered caves, most of which are below the water surface and are not easy to be found.

(2) Eating habits

Crabs eat all kinds of food. Under natural conditions, they mainly eat aquatic plants and humus. They also like to eat snails, mussels, worms and insects, and occasionally prey on small fish and shrimp. Because crabs have strong hunger tolerance, they generally don't eat for ten and a half days and won't starve to death. But from June to September, it grows vigorously and eats a lot. In other months, it is often in a state of semi-starvation. During the winter, it is rarely eaten.

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