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Moving cages further offshore: effects on southern bluefin tuna, T. maccoyii, parasites, health and performance
Citation
Kirchhoff, NT and Rough, KM and Nowak, BF, Moving cages further offshore: effects on southern bluefin tuna, T. maccoyii, parasites, health and performance, PLoS One, 6, (8) Article e23705. ISSN 1932-6203 (2011) [Refereed Article]
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Copyright Statement
Licensed under Creative Commons Attribution 2.5 Generic (CC BY 2.5) http://creativecommons.org/licenses/by/2.5/
DOI: doi:10.1371/journal.pone.0023705
Abstract
The effects of offshore aquaculture on SBT health (particularly parasitic infections and haematology) and performance were
the main aim of this study. Two cohorts of ranched Southern Bluefin tuna (SBT) (Thunnus maccoyii) were monitored
throughout the commercial season, one maintained in the traditional near shore tuna farming zone and one maintained
further offshore. SBT maintained offshore had reduced mortality, increased condition index at week 6 post transfer, reduced
blood fluke and sealice loads, and haematological variables such as haemoglobin or lysozyme equal to or exceeding near
shore maintained fish. The offshore cohort had no Cardicola forsteri and a 5% prevalence of Caligus spp., compared to a
prevalence of 85% for Cardicola forsteri and 55% prevalence for Caligus spp. near shore at 6 weeks post transfer. This study is
the first of its kind to examine the effects of commercial offshore sites on farmed fish parasites, health and performance.
Item Details
Item Type: | Refereed Article |
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Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Fisheries sciences |
Research Field: | Fish pests and diseases |
Objective Division: | Animal Production and Animal Primary Products |
Objective Group: | Fisheries - aquaculture |
Objective Field: | Aquaculture tuna |
UTAS Author: | Kirchhoff, NT (Ms Nicole Kirchhoff) |
UTAS Author: | Nowak, BF (Professor Barbara Nowak) |
ID Code: | 72782 |
Year Published: | 2011 |
Web of Science® Times Cited: | 29 |
Deposited By: | NC Marine Conservation and Resource Sustainability |
Deposited On: | 2011-08-31 |
Last Modified: | 2021-03-19 |
Downloads: | 387 View Download Statistics |
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