Immune responses in different fullsib families of Indian major carp, Labeo rohita, exhibiting differential resistance to Aeromonas hydrophila infection

Selection of fish disease resistance may be performed directly via survival and challenge data or indirectly via the identification of the underlying resistance markers responsible for the differential survival. In a preliminary study, the potential correlation of a variety of specific and nonspecif...

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Bibliographic Details
Published in:Aquaculture 2004-09, Vol.238 (1), p.115-125
Main Authors: Sahoo, Pramoda K., Meher, Prem K., Mahapatra, Kanta Das, Saha, Jatendra N., Jana, Ranjit K., Reddy, Padala V.G.K.
Format: Article
Language:English
Subjects:
Aeromonas hydrophila
Animal aquaculture
animal pathogenic bacteria
Animal productions
antibacterial properties
Aquaculture
Bacteria
bacterial infections
Biological and medical sciences
blood serum
Carp
Disease control
disease resistance
enzyme activity
erythrocytes
Fish
fish culture
fish diseases
freshwater aquaculture
freshwater fish
Fundamental and applied biological sciences. Psychology
General aspects
genetic variation
hemagglutination
hemolysins
immune response
Immunity
Immunology
Infections
Labeo
Labeo rohita
lysozyme
Mortality
sheep
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Summary:Selection of fish disease resistance may be performed directly via survival and challenge data or indirectly via the identification of the underlying resistance markers responsible for the differential survival. In a preliminary study, the potential correlation of a variety of specific and nonspecific immune parameters with aeromoniasis resistance was investigated in 13 different fullsib families of rohu ( Labeo rohita), one of the important Indian major carp species known to exhibit differential susceptibilities to aeromoniasis in laboratory conditions. The experimental infection of fish through the intraperitoneal route to Aeromonas hydrophila produced mortality ranging from 0 to 100%. The specific immune response as measured through haemagglutination (HA) titre against sheep red blood cells (SRBC) and nonspecific immunity levels (lysozyme activity and natural haemolysin titre) were not found to be significantly different between resistant and susceptible groups. Serum bactericidal activity was found to be higher in groups of rohu resistant to A. hydrophila infection. Nevertheless, significant ( P
ISSN:0044-8486
1873-5622
DOI:10.1016/j.aquaculture.2004.06.008