Water quality considerations and criteria for high-density fish culture with supplemental oxygen

J Colt K Orwicz G Bouck

Publication Date

1991

Notes

ISBN 0-913235-72-5

Publication Title

Fisheries Bioengineering Symposium: American Fisheries Society Symposium 10

Start Page

372

End Page

385

Editors

Colt J;White RJ;

Publication Place

Bethesda, MD

Publisher

American Fisheries Society

Abstract

The use of pure oxygen can significantly increase the carrying capacity of a culture system both by supporting increased fish density and by allowing reuse of the water. The minimum allowable dissolved oxygen level is well defined, but considerably less information is available on the maximum allowable dissolved oxygen level. The maximum allowable dissolved oxygen level appears to be influenced primarily by (1) oxygen toxicity, (2) physiological and developmental problems caused by high or rapidly fluctuating dissolved oxygen levels, (3) gas bubble trauma, and (4) biological effects of increased loading and density. Consideration must be given to the effects of oxygen supplementation on other water quality variables such as total gas pressure and carbon dioxide levels. Dissolved gas criteria are suggested for both coldwater and warmwater conditions