Which fish disease is caused by microsporidian parasites?

Which fish disease is caused by microsporidian parasites?

• A. Velvet disease
• B. Gas bubble disease
• C. Microsporidosis
• D. Bacterial gill disease

Answer: (C)

Microsporidia are intracellular, spore-forming parasites that infect fish tissues, causing microsporidiosis. The disease arises from spores that invade and multiply inside host cells, leading to tissue damage and often a wasting condition, with transmission through contaminated water or feed. This makes microsporidosis the correct choice for a disease caused by microsporidian parasites. Velvet disease is caused by a dinoflagellate parasite that coats the skin and gills; gas bubble disease results from dissolved gas supersaturation in the water; bacterial gill disease is caused by bacterial pathogens.

Microsporidia are intracellular, spore-forming parasites that infect fish tissues, causing microsporidiosis. The disease arises from spores that invade and multiply inside host cells, leading to tissue damage and often a wasting condition, with transmission through contaminated water or feed. This makes microsporidosis the correct choice for a disease caused by microsporidian parasites. Velvet disease is caused by a dinoflagellate parasite that coats the skin and gills; gas bubble disease results from dissolved gas supersaturation in the water; bacterial gill disease is caused by bacterial pathogens.