xxxiv
Fig. 4.6
An extensive abscess with associated muscle liquefaction
in the musculature of rainbow trout. The aetiological agent
was Aer. hydrophila ........................................................................ 169
Fig. 4.7
A dissected abscess on a rainbow trout revealing liquefaction
of the muscle and haemorrhaging. The aetiological agent
was Aer. hydrophila ........................................................................ 169
Fig. 4.8
Aeromonas infection in goldfi sh, which
is also displaying abdominal swelling (dropsy)
and some surface haemorrhaging ................................................... 170
Fig. 4.9
Generalised liquefaction of a rainbow trout associated
with infection by Aeromonas .......................................................... 170
Fig. 4.10 Extensive erosion of the tail and fi ns on a rainbow trout.
Also, there is some evidence for the presence of gill disease.
The aetiological agent was Aer. hydrophila .................................... 171
Fig. 5.1
A furuncle, which is attributable to Aer. salmonicida subsp.
salmonicida, on the surface of a rainbow trout............................... 216
Fig. 5.2
A dissected furuncle on a rainbow trout revealing
liquefaction of the muscle............................................................... 216
Fig. 5.3
Carp erythrodermatitis. The aetiological agent is likely
to be atypical Aer. salmonicida ....................................................... 218
Fig. 5.4
Extensive skin and muscle haemorrhaging
in black rockfi sh caused by Aer. salmonicida
subsp. masoucida ............................................................................ 219
Fig. 5.5
A well developed ulcer on a koi carp. The aetiological
agent was atypical Aer. salmonicida ............................................... 219
Fig. 5.6
An ulcerated goldfi sh on which the lesion has extended
across the body wall, exposing the underlying organs.
The aetiological agent was atypical Aer. salmonicida .................... 220
Fig. 5.7
Aer. salmonicida subsp. salmonicida producing brown
diffusible pigment around the colonies on TSA.
The smaller (= rough) and larger (= smooth) colonies
are readily observable ..................................................................... 221
Fig. 5.8
The dark blue colonies of Aer. salmonicida subsp.
salmonicida on CBB ....................................................................... 222
Fig. 5.9
An intensively brown pigmented L-form colony
(~0.5 mm in diameter) of Aer. salmonicida subsp.
salmonicida growing within L-F agar ............................................ 224
Fig. 5.10 An L-form colony (~0.5 mm in diameter) of Aer. salmonicida
subsp. salmonicida growing within L-F agar and stained
by Dienes method ........................................................................... 224
Fig. 6.1
Edw. ictaluri infection in Pangasianodon hypophthalmus.
Pale areas of cellular necrosis are evident in the anterior
(AK) and posterior (PK) kidney ..................................................... 326
List of Figures
Fig. 4.6
An extensive abscess with associated muscle liquefaction
in the musculature of rainbow trout. The aetiological agent
was Aer. hydrophila ........................................................................ 169
Fig. 4.7
A dissected abscess on a rainbow trout revealing liquefaction
of the muscle and haemorrhaging. The aetiological agent
was Aer. hydrophila ........................................................................ 169
Fig. 4.8
Aeromonas infection in goldfi sh, which
is also displaying abdominal swelling (dropsy)
and some surface haemorrhaging ................................................... 170
Fig. 4.9
Generalised liquefaction of a rainbow trout associated
with infection by Aeromonas .......................................................... 170
Fig. 4.10 Extensive erosion of the tail and fi ns on a rainbow trout.
Also, there is some evidence for the presence of gill disease.
The aetiological agent was Aer. hydrophila .................................... 171
Fig. 5.1
A furuncle, which is attributable to Aer. salmonicida subsp.
salmonicida, on the surface of a rainbow trout............................... 216
Fig. 5.2
A dissected furuncle on a rainbow trout revealing
liquefaction of the muscle............................................................... 216
Fig. 5.3
Carp erythrodermatitis. The aetiological agent is likely
to be atypical Aer. salmonicida ....................................................... 218
Fig. 5.4
Extensive skin and muscle haemorrhaging
in black rockfi sh caused by Aer. salmonicida
subsp. masoucida ............................................................................ 219
Fig. 5.5
A well developed ulcer on a koi carp. The aetiological
agent was atypical Aer. salmonicida ............................................... 219
Fig. 5.6
An ulcerated goldfi sh on which the lesion has extended
across the body wall, exposing the underlying organs.
The aetiological agent was atypical Aer. salmonicida .................... 220
Fig. 5.7
Aer. salmonicida subsp. salmonicida producing brown
diffusible pigment around the colonies on TSA.
The smaller (= rough) and larger (= smooth) colonies
are readily observable ..................................................................... 221
Fig. 5.8
The dark blue colonies of Aer. salmonicida subsp.
salmonicida on CBB ....................................................................... 222
Fig. 5.9
An intensively brown pigmented L-form colony
(~0.5 mm in diameter) of Aer. salmonicida subsp.
salmonicida growing within L-F agar ............................................ 224
Fig. 5.10 An L-form colony (~0.5 mm in diameter) of Aer. salmonicida
subsp. salmonicida growing within L-F agar and stained
by Dienes method ........................................................................... 224
Fig. 6.1
Edw. ictaluri infection in Pangasianodon hypophthalmus.
Pale areas of cellular necrosis are evident in the anterior
(AK) and posterior (PK) kidney ..................................................... 326
List of Figures