TABLE 6.
Comparison of specific radioactivity of acetate incorporated into the vascular system of host fish during turnover experiments with that in the gut lumen at the start of incubation
| Species | Gut fraction | Host system | Acetatea (μmol ml−1) | Labela ([dpm ml−1] × 104) | Specific activity ([dpm μmol−1] × 104) |
|---|---|---|---|---|---|
| K. sydneyanus | IV | Gut lumen | 32.0 | 204.12 | 6.4 |
| Blood | 1.9 | 3.04 | 1.6 | ||
| V | Gut lumen | 40.2 | 86.84 | 2.1 | |
| Blood | 1.7 | 0.99 | 0.6 | ||
| O. pullus | IV | Gut lumen | 10.7 | 63.40 | 5.9 |
| Blood | 1.5 (1.1) | 0.45 (2.17) | 0.3 (1.9) | ||
| A. arctidens | V | Gut lumen | 20.2 | 148.65 | 7.4 |
| Blood | 0.7 | 1.47 | 2.1 |
a
Values for the gut were determined at the beginning of the turnover experiments. Those for the blood were determined at the end of turnover experiments (2 h) for samples taken from the caudal vein (no parentheses) or from the heart (parentheses). The corresponding turnover experiment results depicted in Table 3 are 3 (section IV) and 2 (section V) (K. sydneyanus), 3 (O. pullus), and 2 (A. arctidens).