Effects of the first two months of ranching on the health of southern bluefin tuna Thunnus maccoyii

A weekly monitoring project was designed to improve our understanding of the dynamics of southern bluefin tuna health, immune response, and performance during the first two months of ranching. In addition, results were compared to the data for wild fish to highlight any effects of captivity. Weight,...

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Bibliographic Details
Published in:Aquaculture 2011-05, Vol.315 (3), p.207-212
Main Authors: Kirchhoff, N.T., Leef, M.J., Ellis, D., J.Purser, Nowak, B.F.
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Alternative complement activity
Animal aquaculture
Animal productions
Aquaculture
Biological and medical sciences
captive animals
Cardicola forsteri
Effects
Fundamental and applied biological sciences. Psychology
General aspects
Hemoglobin
immune response
Lysozyme activity
Marine
monitoring
Mortality
ranching
Southern bluefin tuna
Thunnus maccoyii
Thunnus thynnus
Tuna
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
wild fish
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Summary:A weekly monitoring project was designed to improve our understanding of the dynamics of southern bluefin tuna health, immune response, and performance during the first two months of ranching. In addition, results were compared to the data for wild fish to highlight any effects of captivity. Weight, length, condition index, hemoglobin concentration, and immune response were all found to change significantly over this period. SBT were found to be relatively healthy prior to a mortality event which resulted in a cumulative mortality of 8.5%. The mortality event was associated with decreased hemoglobin concentrations and changes in immune response.
ISSN:0044-8486
1873-5622
DOI:10.1016/j.aquaculture.2011.02.036