Question |
Answer |
Article |
What type of fish species are affected by mycobacteria?
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- Freshwater
- Saltwater
- Aquarium fish
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Link to Article |
Apart from a wide range of different fish species, what other animals can it affect?
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- prawns (crustaceans and molluscs are vectors)
- sea horses
- humans
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Link to Article |
What are the common clinical signs in fish?
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- haemorrhagic lesions, erosion and scale loss on skin and fins,
- organomegaly
- lordosis
- cachexia
- exophthalmia
- loss of pigmentation, and pale and cystic gills.
Behavioural signs include:
- cessation of feeding,
- lethargy,
- swimming near the surface
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Link to Article |
Which species of fish mycobacteria cause skin disease in humans?
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Necrotising infections in humans are caused by:
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Link to Article |
What methods help to diagnose mycobacterial infections?
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- PCR
- DNA probes- in situ hybridisation
- Antibody-based methods
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Link to Article |
What pathology is associated with sub acute form of Mycobacteriosis in fish?
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- large caseous necrotic areas with surrounding diffuse reticuloendothelial cells and macrophages.
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Link to Article |
What pathology is associated with the chronic proliferative form of Mycobacteriosis in fish?
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- Soft granulomas - with four distinguishable layers:
- central caseous necrosis(with or without nuclear debris)
- spindle-shaped epithelioid cells
- eosinophilic, flattened, epithelioid cells
- fine fibrous connective tissue forming a thin capsule
- Hard granulomas - composed of epithelioid cells encapsulated by fibrous connective tissue with or without calcification.
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Link to Article |
How can Mycobacteriosis in fish be treated?
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- Tetracycline
- Kanamycin sulphate
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Link to Article |