Prevention of freshwater shellfish disease

Pathogens: trichomonads, oblique worms.

Symptoms: There are no obvious symptoms when there are few parasites. A large number of parasites can cause tissue damage, mantle damage, secretion of a large amount of mucus, mucus outflow, water injection pipe weakness, difficulty breathing and death.

Diagnosis: Diagnosis can be made with a microscope. However, it should be noted that when only a small number of worms, such as trichophae and parasitoid, will not cause shellfish death, further careful examination should be conducted to find the main cause.

Prevention: Remove excess sludge from the bottom of the tank and disinfect it. Strengthen feeding and management, splash photosynthetic bacteria, cultivate good water quality, and improve the resistance of cockroaches.

Treatment: Quanchiposa copper sulfate or chelated copper for treatment. Two days after the cure, 1 lime was splashed, the water was turned into a weak alkaline, suitable for growth, and 2 days later, photosynthetic bacteria were splashed, and prevention work was continued.

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