Bacterial Fish Pathogens o D D D jd O 2 U U o 3 s O 0 cS T3 n ct 5 3 i i B 0 0

Bacterial fish pathogens o d d d jd o 2 u u o 3 s o 0

This preview shows page 375 - 383 out of 594 pages.

Bacterial Fish Pathogens o (D (D (D [^ > -^ -jd O^ < "^ 2 U " ^ ^ U ^ ;^ o !3 s O ^ '^ =0 ^ ;-! cS T3 .n 'ct [/5 3 ^ ^ i-i ^ 'B^ 0 0 > (D 0 > 0 ^ It 0 S 0 ^ J J W u w J 0 X ^ + 'T^ (D 'ct 0 > X £ + < u o ct h5 .s ct 5 00 < ^ o I 4^ i ^ 0 'ct C/5 ^ 0 0 'T^ n ct M 0 0 ^ u ^ 0 ^ I t in 0 0 u 1 n 0 ^ I t [/5 0 0 u o o ^ ^ I t [/5 _o n ^ ^ 0 ^ 0 ^ n ITi +-> •> II o o o x) (D [/5 'ct a 0 fe 1 X ) (D in 'ct a 0 fe < PH 0 fe ^ (D 3 ^ < 0 [/5 0
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s ct ^ ^ ^ ;H i^ ii^ ^o ^o ^ T3 [/5 [/5 n C ^ ^ a a ^ T3 ;^ ^ 0 0 CO o o (N ^—^ '^ i^U ^ ^ ^ J ct CO o O (N ^—^ -^ "^ 'T^ ^ ;:3 J ^ II e It [/5 o ^ ^ < n o o ^ 'T^ (D ^ a C/5 ^ (D [/2 Ct a ;-! O fe , 1 'o ct .n 'a n ct > '^ a ^ (D m ct a ;-( O fe o ^ ^ ^ O + s ^ ^ I o K > <^ < ^ ^ o Control 357 ct C/5 •^ ^ -^ L^ =^ 2 ct ;^ 6 n (D [/5 'T^ (D 'ct o m (D o o x)
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358 Bacterial Fish Pathogens H (D (D 3 O >- <^ ^ <: 7^ ^ S P ^ < 0^ ^ '^ .a •§ -^ GO ^ o PH o < J ii ^ W ^ O g i 1 U Q OH S 5 o a ct :n o ^ O U ^-^ (D > ;^ ^3> O ^ I t :n O ^ O U PH I ^ K I ^ ^ s 'o X o H in o I t [/5 o r ^ o U ^ ^ m (D > ;^ -<D O ;-i ^ o ;-( PQ a + ^ n (D ^ a <: + ^ n (D ^ a < bo OO < ^ u ^ ^^ ^ •5 'T^ s C/5 Q ^ •5 ^ s 3 _o 'a 0 m ct 3 3" ' 0 0 in It a P H 'T^ (D 3 + d C/5
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Control 359 u < ttic^O < ^ < O ^ 2 X ffi o ^ ct < s y A 2H in m s ct I O + + ^ 1 CO ^^ > O ct m < 0 ^ n o a ct in O ^ ^ < >^ + O ^ 0 ^ PH^ o a ct in O ^ ^ < ^^ o ;-! ^ O O ^^ 5:H O a ct in O ^ ^ < in T H bX) CO ^^ O o oi a^ 1 r- ^ o a ct ir> O ^ ^ < ^^ n o a ct m O ^ ^ < ^ H S o ^ Ct ^ cn ^ ct ^ 6 (D O '^ ^ -^ 1 I ?^ , a S I :S ?i f :S ffi '^ I ?i ^ h < f. I -^ -5^ I -a, - j g f e < : H c S ^ w a ^ 6 < : OH W fewfe fficS^ OHCS^ fe '5 P H w ^" o o ^ > p < II O fe _;^ a^ oo o oo l A ^ ( N P H w ( N a^ ^ ( N iy^ < E
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360 Bacterial Fish Pathogens o J2, < H c^ ^ I -s O PH o u < u Q o ^^ u^ ^-^ '^ i^U bX) n >^ "^ 'T^ s u^ ^-^ '^ i^U bX) n >^ "^ 'T^ s ^ <: ' T ^ n ct ^ ^ C^ ro" ^ ^ O ( ^ S c^ 0 0 1 u + n ^ o r ^ It > o c^ o ^ -\- -t-> ^ I t _> 'SH t ^ ct > ^ '^ ^ m O ^ ^ < 45 o a m ID [/5 o ^ ^ < 45 o a [/5 ^—. [/5 o ^ fe a o o ^ < CO oo a^ ^—^ o ct U r-» ^ n ct [/5 ;-( (D ^-^ bX) ir^ T 3 OO o a^ Oi ^ u o PH PH ^ O n ^ -g -a u > O PH o p< e 'o PH ^
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Control 361 < ^ O ^ < ^ n ct [/5 ;-( (D bX) ^ O oi ir^ oo a^ ^ o ^—^ m ;-( (D bX) 'T^ O oi fe o ^ o ^ o ;-( ^ o ^ n 'ct Oi T u^ ^ O ;-( ^ o ^ n 'ct ^ O ^ 'ct [/5 o ^ ct "^ < 0 o ct ^ ct "^ <: + a ;-! ' ^ r-i; O ^ o .a ^ ; : TO ^^ O o .a < S 13 ^ [/T (D O 'o ^ ^ X) (D [/5 Ct a O fe ^ It :^ + o o ^ U ^ -;;? >^ T 3 S ct ;r^ ^ n
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362 Bacterial Fish Pathogens (D 5 <!-> :>. ^ <: ^ O S (D U o - I ^ B % ^ u 2; 0^ 2 § H a <: a < ^ PH u 2 i o It o o ct o ^ + o ;-( ^ O O O PQ O ^ r l i ^ o O O ;-( PQ O ^ r l i o B It m O o C/5 O ^ r l i a [/5 (D ^ a a ^-^ o o ^ 'ct ^ a in (D n ^ a a n o It _o ^ ^ < a m (D n ^ a a o ^ O ^ .n 'ct oi + 2 U < a 2 oo s > o ^ ct 0 2 ^ o g I t in o ^ ^ ^ ^ o ^ O ^ n a oo" (N O ^ (D '5 > ^ ^ ct OO ^ o s _o o g § a (D 2 2 & 0 Q .^ 2 2 ^
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Control 363 that, in general, only rough variants conferred protective immunity. A parallel result emanated from the work of Olivier et al. (1985a), who ascertained that avirulent cells were less effective immunogens than their virulent counterparts. Both of these groups regarded the A-layer protein as the antigen which probably conferred a protective response by the fish. In another development, Hastings and Ellis (1988) recorded that rainbow trout responded to A-protein and LPS O-antigen and some of the com- ponents of the ECP (including proteases; Ellis et al., 1988b). So, it is not surprising that Shieh (1985) demonstrated protection with protease fractions. Others have also demonstrated that the A-layer protein is an important protective antigen in non-oily, Montanide-adjuvanted, injectable, whole-cell inactivated vaccines (RPS = 51-78%), with preparations without an A-layer lacking efficacy in Atlantic salmon, as did those with purified LPS. Again, there was no correlation between protection and antibody production (Lund et al., 2003). Striving to protect spotted wolffish against atypical Aer. salmonicida, Lund et al. (2003a) confirmed the need for an A-layer in vaccine
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  • Bacteria, representative, gram-negative bacteria

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