Ulcer disease

Symptoms

Epidermal hyperplasia
Excessive growth on skin.

Ulcers - irregular
Irregular shaped ulcers are evident on the skin.

Fins rotting very quickly
Erosion of fins takes place within a day or so.

Fuzzy growth
Secondary fungal cotton wool like growths

Open red sores
Red lesions show punched out appearance which expand

Ulcers with Necrotic edges
The border of the ulcer develops a ring of dead tissue

Listless and lethargic
Fish moves very lazily in water, much less than normal, lacks interest.

Reddish inflammation
Around the wound caused by the parasite, there is a bloody inflamed area

Scale losses
Patches of missing scales

Ulcers - in mouth
The mouth area shows one or more obvious ulcers.

Haemorrhages - skin
Bloody haemorrhages are apparent over several parts of the skin.

Knotlike white pimples - skin
Skin shows a number of knotlike white raised pimples.

Scales protruding
The scales are raised outwardly protruding.

Raised blister
Blister-like nodules appear above the skin.

Shallow white rimmed ulcers
The skin shows one or more shallow, and white rimmed, ulcers.

Causes

Bacteria originaly identified in 1950 by Snyeszko as Haemophilus piscium, later relabeled as atypical Aeromonas salmonicida. A later DNA comparison showed 99.8% similarity against Aeromonas bestiarum. Typically infects Trout. This bacteria is very similar in symptoms to aeromonas spp. and pseudomonas spp.

See scientific paper on distinguishing between A.salmonicida & A. bestiarum.

Prognosis

Unchecked can cause many losses, treated early good outlook can be expected.

Treatment

Please login to see the treatment information.

Prevention

DNA and RNA diagnostic references

Phenotypic, genotypic and phylogenetic discrepncies to differentiate
Aeromonas salmonicida from Aeromonas bestiarum.

From Int Microbiol. 2005Dec ; 8 (4) : 259-69.
Martinez-Murcia AJ, Molecular Diagnostics Center, Alicante, Spain.

Ulcer disease

Symptoms

Causes

Prognosis

Treatment

Prevention

Phenotypic, genotypic and phylogenetic discrepncies to differentiate
Aeromonas salmonicida from Aeromonas bestiarum.

From Int Microbiol. 2005Dec ; 8 (4) : 259-69.
Martinez-Murcia AJ, Molecular Diagnostics Center, Alicante, Spain.

Pictures

There are 7 disease pictures available. Please log in to see them.

Ulcer disease

Symptoms

Causes

Prognosis

Treatment

Prevention

Phenotypic, genotypic and phylogenetic discrepncies to differentiate Aeromonas salmonicida from Aeromonas bestiarum.

From Int Microbiol. 2005Dec ; 8 (4) : 259-69.Martinez-Murcia AJ, Molecular Diagnostics Center, Alicante, Spain.

Pictures

There are 7 disease pictures available. Please log in to see them.

Phenotypic, genotypic and phylogenetic discrepncies to differentiate
Aeromonas salmonicida from Aeromonas bestiarum.

From Int Microbiol. 2005Dec ; 8 (4) : 259-69.
Martinez-Murcia AJ, Molecular Diagnostics Center, Alicante, Spain.