193
from diseased catfi sh are resistant to oxytetracycline (De Paola et al. 1988 ). For the
future, new antimicrobial compounds, such as enrofl oxacin, offer promise. This
compound is anti-bacterial even at low dosages, i.e. with a MIC reported as 0.002 μg/
ml (Bragg and Todd 1988 ).
Copper sulphate at a dose of 1 % of total alkalinity and used as a continuous bath
for 18 h has been effective at controlling Aeromonas hydrophila infection in channel
catfi sh (Bebak et al. 2012 ).
Bacteriophages
Two Myoviridae bacteriophages, designated pAh1-C and pAh6-C, were recovered,
and a single administration controlled multiple-antibiotic-resistant Aer. hydrophila
in cyprinid loaches ( Misgurnus anguillicaudatus ) (Jun et al. 2013 ). Subsequently, a
bacteriophage was recovered from sewage, and used to control motile aeromonas
septicaemia in Nile tilapia (De La Cruz-Papa et al. 2014 ).
Aeromonas jandaei
Characteristics of the Disease
Aer. jandaei has been reported as pathogenic to eel in Spain (Esteve et al. 1993 ,
1994 ; Esteve 1995 ).
Characteristics of the Pathogen
Initially, 8 isolates were recovered using unstated procedures during 1987 and 1988.
Whereas initially, the method of identifi cation was not stated (Esteve et al. 1994 ), a
subsequent numerical taxonomy study equated isolates with Aer. jandaei (Esteve
1995 ).
Box 4.5: Aer. jandaei
Cultures are motile Gram-negative rods, that produce arginine dihydrolase,
indole and lysine decarboxylase but not ornithine decarboxylase, degrade
casein, chitin, DNA, gelatin, starch and Tween 80, grow in 0 % but not 6 %
(w/v) sodium chloride and at 4–42 °C, and produce acid from galactose, glycogen, mannose, sucrose and trehalose, but not arabinose, lactose, melibiose,
raffi nose, rhamnose or salicin.
Aeromonas jandaei
from diseased catfi sh are resistant to oxytetracycline (De Paola et al. 1988 ). For the
future, new antimicrobial compounds, such as enrofl oxacin, offer promise. This
compound is anti-bacterial even at low dosages, i.e. with a MIC reported as 0.002 μg/
ml (Bragg and Todd 1988 ).
Copper sulphate at a dose of 1 % of total alkalinity and used as a continuous bath
for 18 h has been effective at controlling Aeromonas hydrophila infection in channel
catfi sh (Bebak et al. 2012 ).
Bacteriophages
Two Myoviridae bacteriophages, designated pAh1-C and pAh6-C, were recovered,
and a single administration controlled multiple-antibiotic-resistant Aer. hydrophila
in cyprinid loaches ( Misgurnus anguillicaudatus ) (Jun et al. 2013 ). Subsequently, a
bacteriophage was recovered from sewage, and used to control motile aeromonas
septicaemia in Nile tilapia (De La Cruz-Papa et al. 2014 ).
Aeromonas jandaei
Characteristics of the Disease
Aer. jandaei has been reported as pathogenic to eel in Spain (Esteve et al. 1993 ,
1994 ; Esteve 1995 ).
Characteristics of the Pathogen
Initially, 8 isolates were recovered using unstated procedures during 1987 and 1988.
Whereas initially, the method of identifi cation was not stated (Esteve et al. 1994 ), a
subsequent numerical taxonomy study equated isolates with Aer. jandaei (Esteve
1995 ).
Box 4.5: Aer. jandaei
Cultures are motile Gram-negative rods, that produce arginine dihydrolase,
indole and lysine decarboxylase but not ornithine decarboxylase, degrade
casein, chitin, DNA, gelatin, starch and Tween 80, grow in 0 % but not 6 %
(w/v) sodium chloride and at 4–42 °C, and produce acid from galactose, glycogen, mannose, sucrose and trehalose, but not arabinose, lactose, melibiose,
raffi nose, rhamnose or salicin.
Aeromonas jandaei