University of Fallujah College of veterinary medicine Bacterial Diseases Dr. Zaid Yaseen Ibrahim B.V.M.S, M.Sc You can find all my lectures and presentations in my personal blog at: ( zaidyaseen.wordpress.com ) and you can contact me by E.mail: ( drzaidvet@gmail.com ) The latest editing on this document was done on December 8, 2019
Columnaris Columnaris
Channel catfish with classic “saddleback” presentation and yellow pigmentation of Flavobacterium columnare.
Flavobacterium columnare infection in coho salmon with deep ulcer covered by a yellowish white mucoid exudate.
Columnaris disease (Flavobacterium columnare) showing necrosis of lamellae and yellowish mucoid mass of bacteria on gills of a channel catfish.
Columnaris lesion on dorsum of rainbow trout.
Hemorrhagic septicemia Hemorrhagic septicemia
Aeromonas hydrophila skin lesion on redbreast sunfish
Aeromonas hydrophila infection in a cultured yellow perch
Cichlid with necrotizing stomatitis caused by motile Aeromonas septicemia.
Extensive surface haemorrhaging on tilapia
A crucian carp displaying extensive surface haemorrhaging attributed to infection with Aer. hydrophila
An extensive abscess with associated muscle liquefaction in the musculature of rainbow trout. The aetiological agent was Aer. hydrophila
A dissected abscess on a rainbow trout revealing liquefaction of the muscle and haemorrhaging. The aetiological agent was Aer. hydrophila
Generalised liquefaction of a rainbow trout
Extensive erosion of the tail and fins on a rainbow trout. Also, there is some evidence for the presence of gill disease. The aetiological agent was Aer. hydrophila
A female brown trout with large haemorrhagic lesion due to Aeromonas hydrophila infection. The lesion has developed into a prolapse of the rectum with secondary Saprolegnia infection.
Furunculosis Furunculosis
A furuncle, which is attributable to Aer. salmonicida subsp. salmonicida, on the surface of a rainbow trout
Ruptured Aeromonas salmonicida furuncle on flank of Atlantic salmon
Lake whitefish (Coregonus sp.) with focal necrotizing myositis caused by A. salmonicida subsp. salmonicida.
A dissected furuncle on a rainbow trout revealing liquefaction of the muscle
Extensive skin and muscle haemorrhaging in black rockfish caused by Aer. Salmonicida subsp. masoucida.
A well developed ulcer on a koi carp.
Carp erythrodermatitis.
Furunculosis in a brown trout. There is also a secondary Saprolegnia infection over the raised red furuncles.
Edwardsiellosis Edwardsiellosis
Ulcer on caudal peduncle associated with edwardsiellosis in a common carp
Edwardsiella tarda infection in a channel catfish
Exophthalmos and partial eye opacity associated with edwardsiellosis in a largemouth bass
Large area of depigmentation (arrowed) with central haemorrhage on flank of channel catfish infected with Edwardsiella tarda.
Mycobacteriosis Mycobacteriosis
Erosion of the lower jaw and preopercle along with shallow hemorrhagic skin lesions associated with a Mycobacterium marinum infection in a hybrid striped bass
Skin ulcer caused by Mycobacterium marinum in an inland silverside
Mycobacteriosis in yellowtail . Extensive granulomas are present on the liver and kidney
Granulomatous lesions typical of Mycobacterium , goldfish
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