A. Causes: Myxosporea from the genera Myxobolus, Myxosoma, Thelohanellus, and Henneguya
B. Characteristics of pathogens:
- Myxosporea is shaped like pears or watermelon seeds, which are wrapped in
cyst that contains thousands of spores.
- In Myxobolus and Myxosoma spores there are 1-4 polar capsules and sporoplasm.
When the spore is immature, the 2 sporoplasmic nuclei fuse into one before or after the sporoplasm is released. This newly formed organ has a vacuole called the iodinophilous vacuole.
- Myxosporea infection occurs when the spore is freely eaten by the host and into the intestine. In the intestine, the spore breaks out sporoplasm, and then moves amoeboidally into the blood circulation and is carried to the target organ of infection.
- Hosts of the cyprinidae, labirinth and salmonidae groups. Infects the tissue of gill filter, bone cartilage, muscle / meat, and some internal organs of fish (especially seeds). In Indonesia, the types of fish that are often infected with myxosporea include carp seeds, java carp, giant gourami.
C. Clinical Symptoms:
- there is a white lump like a round-oval tumor resembling a grain of rice found on the gills.
- Swelling / loose in the body (right / left), abnormal bone structure.
- Fish swim abnormally, fish often stay at the bottom of the pond and eventually die.
- Visual observation of behavior and clinical symptoms.
- Preparation of ponds (drying and disinfection of fish ponds) to break the life cycle of parasites.
- In fish infected immediately, fish are taken and destroyed.
- Avoid using water from ponds that are infected with parasites.
- Precipitation which is equipped with physical filtration (stone, palm fiber, sand and sand).
- There are no effective chemicals to treat this disease.