Seasonal changes in tissue composition during the first annual cycle of tegu lizards
| . | Seasonal activity state . | Tail muscle . | Liver . | Heart . | Brain . |
|---|---|---|---|---|---|
| Protein (mg g−1) | Autumn activity | 70.5±2.57 (212.5±18.6) | 121.6±4.79 | 64.9±2.20 | 62.6±2.24 |
| Winter dormancy | 65.7±1.85 (183.3±10.5) | 129.6±6.01 | 62.1±2.24 | 60.1±2.41 | |
| Arousal | 63.9±4.10 (119.8±21.4)a | 120.8±6.34 | 59.9±2.00 | 66.1±0.76 | |
| Spring activity | 60.2±1.87 (146.1±14.3)a | 132.6±4.75 | 61.6±2.22 | 70.3±3.00 | |
| Glycogen (mg g−1) | Autumn activity | 0.83±0.24 | 36.2±6.51b-d | 1.04±0.18 | 1.22±0.28d |
| Winter dormancy | 0.36±0.07c | 13.2±7.33 | 2.56±0.48a,c,d | 2.59±0.19a,d | |
| Arousal | 1.29±0.28 | 21.5±3.76 | 1.64±0.24 | 1.50±0.13d | |
| Spring activity | 0.78±0.18 | 13.4±2.83 | 1.10±0.17 | 0.49±0.03 | |
| Lipid (mg g−1) | Autumn activity | 23.6±6.07b,c | 34.5±0.79 | - | - |
| Winter dormancy | 11.3±0.90c | 33.0±4.06 | - | - | |
| Arousal | 15.0±1.08 | 38.5±1.96 | - | - | |
| Spring activity | 20.3±3.46 | 29.9±1.14 | - | - |
| . | Seasonal activity state . | Tail muscle . | Liver . | Heart . | Brain . |
|---|---|---|---|---|---|
| Protein (mg g−1) | Autumn activity | 70.5±2.57 (212.5±18.6) | 121.6±4.79 | 64.9±2.20 | 62.6±2.24 |
| Winter dormancy | 65.7±1.85 (183.3±10.5) | 129.6±6.01 | 62.1±2.24 | 60.1±2.41 | |
| Arousal | 63.9±4.10 (119.8±21.4)a | 120.8±6.34 | 59.9±2.00 | 66.1±0.76 | |
| Spring activity | 60.2±1.87 (146.1±14.3)a | 132.6±4.75 | 61.6±2.22 | 70.3±3.00 | |
| Glycogen (mg g−1) | Autumn activity | 0.83±0.24 | 36.2±6.51b-d | 1.04±0.18 | 1.22±0.28d |
| Winter dormancy | 0.36±0.07c | 13.2±7.33 | 2.56±0.48a,c,d | 2.59±0.19a,d | |
| Arousal | 1.29±0.28 | 21.5±3.76 | 1.64±0.24 | 1.50±0.13d | |
| Spring activity | 0.78±0.18 | 13.4±2.83 | 1.10±0.17 | 0.49±0.03 | |
| Lipid (mg g−1) | Autumn activity | 23.6±6.07b,c | 34.5±0.79 | - | - |
| Winter dormancy | 11.3±0.90c | 33.0±4.06 | - | - | |
| Arousal | 15.0±1.08 | 38.5±1.96 | - | - | |
| Spring activity | 20.3±3.46 | 29.9±1.14 | - | - |
Protein values correspond to the soluble fraction after centrifugation;total protein content in tail muscle is indicated in parentheses. `Autumn activity' corresponds to late autumn, and `arousal' to rehydrated, unfed animals in Table 1. Values are the mean ± s.e.m. from six animals; a indicates significant differences from autumn; b from winter dormancy; c from arousal; d from spring activity(P<0.05).