The living habits and breeding management of Rushan oysters

The hard area where Rushan oysters live on the seabed is called an oyster bed. These beds are located in deep or shallow seawater or brackish river mouth waters. The Rushan oyster lives in the middle of the intertidal zone.

Rushan oysters belong to sessile shellfish. Usually fixed on shallow sea objects or coastal reefs, feeding and breathing are achieved by opening and closing shells. It is a filter feeding organism that primarily feeds on planktonic animals, diatoms, and organic waste. The Rushan oyster generates airflow in water by vibrating its cilia. Water enters the shell. Suspended particles in water are stuck by mucus. Cilia and tentacles are classified based on their particle size. Then feed the small particles into the mouth, and transport the large particles to the edge of the mantle and discard them.

Breeding and management of Rushan oysters:

1. Move the stone: Simply move the position of the oyster stone. Rotating stones can prevent oysters from being suffocated by mud, stir up floating mud, increase the nutrient content of bait, and promote oyster growth. During the growth period, stones are usually 2 to 3 times larger.

2. Flood prevention: During the rainy season, it is necessary to pay attention to preventing floods from entering, or digging embankments to prevent floods, or moving Rushan oysters to deep water areas with high salinity for breeding.

3. Wintering: Oysters and Rushan oysters raised in the north usually have to go through 2 to 3 winter freezing periods. Check before freezing, and then transplant the threatened oysters into deep water to ensure winter safety.

4. Fertilization: 1-2 months before harvest, move oysters to a good fattening farm for fertilization to achieve the goal of increasing yield.

5. Preventing stampede accidents: Oysters grown on the beach can only filter water and eat on the beach. Once they get stuck in the soil, they will not be able to live normally and will die. It is strictly prohibited to step on the beach at will. When walking off the beach, the management personnel should follow the passage.

6. Dredging the water channel: Always check if the drainage channel is unobstructed. After low tide, there should be no water accumulation on the beach to prevent the death of oysters due to high temperatures, carnivores, and deep floating soil.

7. Eliminate harm: Rushan oysters have many predators and should be removed together with the stones. Strengthen management and prey on predators during seasons of frequent crab activity.

8. Windproof: Typhoons have a great destructive power on the breeding facilities of oysters in Rushan, and they can also spread soil and sand to bury anchors and oysters. Therefore, after a typhoon, timely rescue, repair of rafts, and support of falling or buried anchors should be carried out.