Fait partie de [OMC60]

2003 - 224 p.

Handling and manipulating tunas in captivity: A physiologist's perspective

Brill R.W.

The Kewalo Research Facility has been routinely maintaining juvenile (1-3 kg) yellowfin and skipjack tunas in shoreside tanks for more than 40 years. Research conducted at this laboratory has shown that these high energy demand fishes are very sensitive to acute reductions of ambient oxygen. Therefore, when maintaining tunas in pens for aquaculture, every effort should be made to ensure clean and well oxygenated conditions. If for whatever reasons this is not possible, then efforts should be directed to avoid increases of the fishes metabolic rates (for example by not feeding) or stress by manipulation until water quality problems can be rectified. Anaesthesia is probably not necessary for procedures that can be accomplished within a minute or two, as fish quickly removed from the water will generally remain completely quiescent for this period. If anaesthesia is required, benzocaine is preferable over MS222. Injectable anaesthetics are generally not recommended.



Citer cet article    

Brill R.W. Handling and manipulating tunas in captivity: A physiologist's perspective. In : Bridges C.R. (ed.), García A. (ed.), Gordin H. (ed.). Domestication of the bluefin tuna Thunnus thynnus thynnus. Zaragoza : CIHEAM, 2003. p. 37-39. (Cahiers Options Méditerranéennes; n. 60). 1. International Symposium on Domestication of the Bluefin Tuna Thunnus Thynnus Thynnus, 2002/02/03-08, Cartagena (Spain). http://om.ciheam.org/om/pdf/c60/03600087.pdf