Innate immune responses in families of Indian major carp, Labeo rohita, differing in their resistance to Edwardsiella tarda infection

Genetic variation in the innate immune responses of Indian major carp, rohu (Labeo rohita) families was investigated. Innate immune responses were measured among the fullsib families of rohu, produced using nested mating design for increased growth. Significant differences as well as large variation...

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Bibliographic Details
Published in:Current science (Bangalore) 2007-05, Vol.92 (9), p.1270-1274
Main Authors: Mohanty, B. R., Sahoo, P. K., Mahapatra, K. D., Saha, J. N.
Format: Article
Language:English
Subjects:
Agglutination
Carp
Disease resistance
Edwardsiella tarda
Fish culture
Freshwater
Genetic variation
Infections
Labeo rohita
Marine fishes
Medical genetics
Pathogens
Salmon
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Summary:Genetic variation in the innate immune responses of Indian major carp, rohu (Labeo rohita) families was investigated. Innate immune responses were measured among the fullsib families of rohu, produced using nested mating design for increased growth. Significant differences as well as large variations in each of the immune parameters were observed. The natural resistance of each family to Edwardsiella tarda infection was also assessed by intraperitoneal challenge study. A wide variation in per cent survival (0 to 100) was noticed among the families after bacterial challenge. A positive significant (P < 0.05) correlation was observed between per cent survival and superoxide production as measured through nitroblue tetrazolium assay. On the other hand, no significant correlation was observed between other immune parameters, viz. serum lysozyme activity, serum myeloperoxidase content, plasma glucose content, serum haemolysin, haemagglutination and bacterial agglutination titres measured and the per cent survival.
ISSN:0011-3891