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Table 4.

Seasonal changes in tissue composition during the first annual cycle of tegu lizards

Seasonal activity stateTail muscleLiverHeartBrain
Protein (mg g−1Autumn 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−1Autumn 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−1Autumn 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 stateTail muscleLiverHeartBrain
Protein (mg g−1Autumn 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−1Autumn 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−1Autumn 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).

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