. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 228 K. CARLSSON AND G. GADE. 8 16 Time (h) FIGURE 6. Effect of incubating L//WM/MS polyphemus in oxygen-free seawater for various times on the levels of arginine phosphate and arginine in the telson levator muscle and hepatopancreas. The time course of changes occurring during recovery in muscle is also shown; onset of recovery is indicated by the arrow. Each value is a mean ± SD (n = 5). was some breakdown of arginine phosphate in the hepatopancreas during hypoxia, quantitatively this did not contribute much to overall ener
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 228 K. CARLSSON AND G. GADE. 8 16 Time (h) FIGURE 6. Effect of incubating L//WM/MS polyphemus in oxygen-free seawater for various times on the levels of arginine phosphate and arginine in the telson levator muscle and hepatopancreas. The time course of changes occurring during recovery in muscle is also shown; onset of recovery is indicated by the arrow. Each value is a mean ± SD (n = 5). was some breakdown of arginine phosphate in the hepatopancreas during hypoxia, quantitatively this did not contribute much to overall energy production due to the low initial levels of this compound (Fig. 6). During recovery after hypoxia, arginine phosphate levels in muscle returned to initial values within 1 h. There were significant changes in the levels of D-lactate and alanine during hypoxia in both muscle and hepatopancreas tissue. After an initial increase in the first hour, D-lactate levels in muscle tissue as well as in hepatopancreas seemed to increase slightly vith time, but due to the high variability these changes were not significant (Fig. 7). Until 2 h of recovery had passed, D-lactate levels in muscle remained high, and they ere still above control levels after 8 h of recovery. In the hepatopancreas, the decrease >-iactate levels was somewhat faster, yet control values were not reached after 8 h oi overy. lanine levels increased with time of hypoxia in both tissues (Fig. 8). However, in muscle lissue most of the alanine was produced until 24 h of hypoxia, whereas there was a further increase in alanine levels between 24 and 48 h of hypoxia in the hepatopancreas. Succinate production was minimal during the first 10 h of hypoxia in the muscle tissue and was absent in hepatopancreas (Fig. 8). Aspartate levels of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perf
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