219
(a) the ulcers were deeper and more extensive,
(b) renal and splenic changes, such as those found in sub-acute furunculosis of
salmonids, were present at an earlier stage in the course of the disease than in
CE (where internal lesions were restricted to later stages in cases where septicaemia developed).
There has been some debate about whether or not atypical Aer. salmonicida are
genuinely responsible for ulcer disease because culturing will often fail to recover
the pathogen. However, Goodwin and Merry ( 2009 ) identifi ed atypical Aer. salmonicida in the majority of specimens [52 out of 62 samples] of koi ulcer disease.
Fig. 5.4 Extensive skin and muscle haemorrhaging in black rockfi sh caused by Aer. salmonicida
subsp. masoucida. Photograph courtesy of Dr. D.-H. Kim
Fig. 5.5 A well developed ulcer on a koi carp. The aetiological agent was atypical Aer.
salmonicida
Aeromonas salmonicida
(a) the ulcers were deeper and more extensive,
(b) renal and splenic changes, such as those found in sub-acute furunculosis of
salmonids, were present at an earlier stage in the course of the disease than in
CE (where internal lesions were restricted to later stages in cases where septicaemia developed).
There has been some debate about whether or not atypical Aer. salmonicida are
genuinely responsible for ulcer disease because culturing will often fail to recover
the pathogen. However, Goodwin and Merry ( 2009 ) identifi ed atypical Aer. salmonicida in the majority of specimens [52 out of 62 samples] of koi ulcer disease.
Fig. 5.4 Extensive skin and muscle haemorrhaging in black rockfi sh caused by Aer. salmonicida
subsp. masoucida. Photograph courtesy of Dr. D.-H. Kim
Fig. 5.5 A well developed ulcer on a koi carp. The aetiological agent was atypical Aer.
salmonicida
Aeromonas salmonicida