| Popis: |
Several experiments were conducted with pinfish, Lagodon rhomboides (L.). and black sea bass, Centropristis striata (L.), to determine the practicality of using the rate of loss of 65Zn to estimate the metabolic rate of fish under natural conditions. No significant correlations were found between this and oxygen consumption, feeding rate, fish size, or temperature. Restricting fish movement had no consistent effect on zinc loss nor did elevated levels of inorganic zinc in the diet. Because of the lack of positive results, we concluded that the rate of loss of 65Zn is not a practical method for estimating field metabolism of fish. |
