ACKNOWLEDGEMENTS
We would like to thank Mr Hugh Horrex of Allt Mor Hatcheries for his
invaluable collaboration. This work was supported by a grant from the
Science and Engineering Research Council, Marine Technology
Directorate.
M. G. Poxton* and K. R. Murrayt
* Brewing and Biological Sciences Department,
t Chemical and Process Engineering Department,
Heriot- Watt University,
Chambers Street,
Edinburgh EH1 1HX,
Scotland