196
Disease Control
The oral administration of oxytetracyline led to a cessation in mortalities within two
weeks (Liu and Li 2012 ).
Aeromonas sobria
Characteristics of the Disease
Organisms, identifi ed as Aer. sobria, have been isolated from wild spawning gizzard
shad ( Dorosoma cepedianum) in Maryland, USA during 1987 (Toranzo et al. 1989 ),
from farmed perch (Perca fl uviatilis) in Switzerland (Wahli et al. 2006 ), from tail rot
in tilapia ( Oreochromis niloticus ) (Li and Cai 2011 ) and a haemorrhagic ulcerative
disease in stone loach ( Triplophya siluroides ) (Xu et al. 2014b ) in China, from rainbow trout in Turkey (Ciftci et al. 2015 ), and from mass mortalities among the therapeutic fi sh Garra rufa in Slovakia (Majtan et al. 2012 ). Moribund gizzard shad did
not reveal any external or internal signs of disease; perch had skin lesions and fi n
rot; Garra rufa displayed abnormal swimming, local haemorrhages and skin lesions.
Isolation
Pure culture growth was obtained from kidney, liver and spleen of moribund animals following inoculation of BHIA or TSA with incubation at 22 °C/28 °C for one
or two days (Toranzo et al. 1989 ; Xu et al. 2014 ).
Characteristics of the Pathogen
Isolates identifi ed as Aer. sobria biovar sobria have been found to be pathogenic to
rainbow trout (Orozova et al. 2009 ).
4 Aeromonadaceae Representatives (Motile Aeromonads)
Disease Control
The oral administration of oxytetracyline led to a cessation in mortalities within two
weeks (Liu and Li 2012 ).
Aeromonas sobria
Characteristics of the Disease
Organisms, identifi ed as Aer. sobria, have been isolated from wild spawning gizzard
shad ( Dorosoma cepedianum) in Maryland, USA during 1987 (Toranzo et al. 1989 ),
from farmed perch (Perca fl uviatilis) in Switzerland (Wahli et al. 2006 ), from tail rot
in tilapia ( Oreochromis niloticus ) (Li and Cai 2011 ) and a haemorrhagic ulcerative
disease in stone loach ( Triplophya siluroides ) (Xu et al. 2014b ) in China, from rainbow trout in Turkey (Ciftci et al. 2015 ), and from mass mortalities among the therapeutic fi sh Garra rufa in Slovakia (Majtan et al. 2012 ). Moribund gizzard shad did
not reveal any external or internal signs of disease; perch had skin lesions and fi n
rot; Garra rufa displayed abnormal swimming, local haemorrhages and skin lesions.
Isolation
Pure culture growth was obtained from kidney, liver and spleen of moribund animals following inoculation of BHIA or TSA with incubation at 22 °C/28 °C for one
or two days (Toranzo et al. 1989 ; Xu et al. 2014 ).
Characteristics of the Pathogen
Isolates identifi ed as Aer. sobria biovar sobria have been found to be pathogenic to
rainbow trout (Orozova et al. 2009 ).
4 Aeromonadaceae Representatives (Motile Aeromonads)