518
0.025 % and 0.05 % to sea bass for 9-weeks leading to an impact on immunity, i.e.
a signifi cant reduction in serum proteins, immunoglobulins and lysozyme activity,
and an increase in phagocytosis, and enhanced resistance to experimental challenge
(RPS = 75 % (Volpatti et al. 2013 )
Antimicrobial Compounds Oxolinic acid controls mortalities in Atlantic salmon.
Aliivibrio wodanis
Two groups of bacteria were recovered from Atlantic salmon with so-called winter
ulcer disease/syndrome (Lunder et al. 2000 ), of which one comprised a comparatively heterogeneous assemblage of cultures, i.e. Ali. wodanis. Our hypothesis is
that the two organisms [the second is Moritella viscosa ] work together synergistically to give the single disease condition.
Characteristics of the Disease
Ulcers, of indeterminate cause, have been appearing on the fl anks of Atlantic salmon
in seawater during winter (= winter ulcer disease), principally in Iceland and Norway
(Salte et al. 1994 ; Lunder et al. 1995 ; Benediktsdóttir et al. 1998 ), and more recently
in Scotland. Since its fi rst recognition, a view has emerged that two new vibrios , Ali.
wodanis and Moritella viscosa, may be responsible (Benediktsdóttir et al. 2000 ).
Characteristics of the Pathogen
Box 10.5: Aliivibrio wodanis
The taxon is regarded as not being especially homogeneous, phenotypically.
Nevertheless, the yellow, opaque colonies contain Gram-negative, motile fermentative rods that produce alkaline phosphatase, caprylate esterase, catalase,
indole and oxidase but not arginine dihydrolase, chemotrypsinase,
α-fucosidase, α- or ß-glucosidase, lysine decarboxylase, α-mannosidase,
ornithine decarboxylase, degrade bovine blood (ß-haemolysis only in the
presence of 2 % w/v NaCl), DNA, starch and Tween 80 but not aesculin,
casein or lecithin, grow at 4–25 but not 30 °C in 1–4 % (w/v) NaCl, produce
acid from galactose, glycerol, glucose and mannose but not L-arabinose, cellobiose, inositol, lactose, melibiose, raffi nose, L-rhamnose or xylose, and are
susceptible to the vibriostatic agent, O/129. The methyl red test is positive,
but not the Voges Proskauer reaction. The G + C ratio of the DNA is 40.0 mol%
(Lunder et al. 2000 ).
10 Vibrios
0.025 % and 0.05 % to sea bass for 9-weeks leading to an impact on immunity, i.e.
a signifi cant reduction in serum proteins, immunoglobulins and lysozyme activity,
and an increase in phagocytosis, and enhanced resistance to experimental challenge
(RPS = 75 % (Volpatti et al. 2013 )
Antimicrobial Compounds Oxolinic acid controls mortalities in Atlantic salmon.
Aliivibrio wodanis
Two groups of bacteria were recovered from Atlantic salmon with so-called winter
ulcer disease/syndrome (Lunder et al. 2000 ), of which one comprised a comparatively heterogeneous assemblage of cultures, i.e. Ali. wodanis. Our hypothesis is
that the two organisms [the second is Moritella viscosa ] work together synergistically to give the single disease condition.
Characteristics of the Disease
Ulcers, of indeterminate cause, have been appearing on the fl anks of Atlantic salmon
in seawater during winter (= winter ulcer disease), principally in Iceland and Norway
(Salte et al. 1994 ; Lunder et al. 1995 ; Benediktsdóttir et al. 1998 ), and more recently
in Scotland. Since its fi rst recognition, a view has emerged that two new vibrios , Ali.
wodanis and Moritella viscosa, may be responsible (Benediktsdóttir et al. 2000 ).
Characteristics of the Pathogen
Box 10.5: Aliivibrio wodanis
The taxon is regarded as not being especially homogeneous, phenotypically.
Nevertheless, the yellow, opaque colonies contain Gram-negative, motile fermentative rods that produce alkaline phosphatase, caprylate esterase, catalase,
indole and oxidase but not arginine dihydrolase, chemotrypsinase,
α-fucosidase, α- or ß-glucosidase, lysine decarboxylase, α-mannosidase,
ornithine decarboxylase, degrade bovine blood (ß-haemolysis only in the
presence of 2 % w/v NaCl), DNA, starch and Tween 80 but not aesculin,
casein or lecithin, grow at 4–25 but not 30 °C in 1–4 % (w/v) NaCl, produce
acid from galactose, glycerol, glucose and mannose but not L-arabinose, cellobiose, inositol, lactose, melibiose, raffi nose, L-rhamnose or xylose, and are
susceptible to the vibriostatic agent, O/129. The methyl red test is positive,
but not the Voges Proskauer reaction. The G + C ratio of the DNA is 40.0 mol%
(Lunder et al. 2000 ).
10 Vibrios