Article

Immune responses of nile tilapia (Oreochromis niloticus L.) clones: I. Non-specific responses

Details

Citation

Sarder MRI, Thompson K, Penman D & McAndrew B (2001) Immune responses of nile tilapia (Oreochromis niloticus L.) clones: I. Non-specific responses. Developmental and Comparative Immunology, 25 (1), pp. 37-46. https://doi.org/10.1016/S0145-305X%2800%2900040-9

Abstract
The importance of genetic variation in the non-specific immune responses of Nile tilapia (Oreochromis niloticus L.) clones was investigated. Fully inbred clones (IC) of Nile tilapia, produced using gynogenesis and sex reversal, and crosses between these lines (outbred clones) were used in this study. Non-specific immune responses were compared between the ICs, including serum lysozyme activity and phagocytosis, and significant differences were observed between the different groups. Their natural resistance to Aeromonas hydrophila infection was also assessed by bacterial challenge. A positive correlation was observed between the level of infection obtained and the non-specific immune parameters measured. Cumulative mortalities of fish obtained in the study showed that when a IC susceptible to A. hydrophila was crossed with a resistant IC, the resulting progeny exhibited intermediate levels of resistance to that of their parents.

Keywords
tilapia; inbred clones; non-specific immune response; Aeromonas hydrophila; lysozyme; phagocytosis; bacterial resistance; gynogenesis; Aquaculture; Nile tilapia

Journal
Developmental and Comparative Immunology: Volume 25, Issue 1

StatusPublished
Publication date31/01/2001
URLhttp://hdl.handle.net/1893/9936
PublisherElsevier
ISSN0145-305X