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Table 3.

Seasonal changes in blood plasma parameters during the first annual cycle of tegu lizards

Seasonal activity stateGlucose (mmol l−1)Lactate (mmol l−1)Total lipids (mg ml−1)β-Hydroxybutyrate (mmol l−1)Protein (mg ml−1)Urea (mg l−1)Osmolality (Osm g−1 H2O)
Autumn activity 5.22±0.63 47.4±2.0 20.4±4.2 307.1±5.3b 
Winter dormancy 3.08±0.15b 1.13±0.16 5.67±0.36b 2.85±0.33b 53.3±2.2b 20.4±5.2 323.1±1.5a,b 
Arousal 5.87±0.65 0.67±0.11 3.02±0.26a 40.2±2.0 21.1±4.8 315.4±6.2a,b 
Spring activity 7.61±0.97 0.90±0.14 3.97±0.40 1.34±0.21 43.1±1.5 35.5±6.1 293.7±2.3 
Seasonal activity stateGlucose (mmol l−1)Lactate (mmol l−1)Total lipids (mg ml−1)β-Hydroxybutyrate (mmol l−1)Protein (mg ml−1)Urea (mg l−1)Osmolality (Osm g−1 H2O)
Autumn activity 5.22±0.63 47.4±2.0 20.4±4.2 307.1±5.3b 
Winter dormancy 3.08±0.15b 1.13±0.16 5.67±0.36b 2.85±0.33b 53.3±2.2b 20.4±5.2 323.1±1.5a,b 
Arousal 5.87±0.65 0.67±0.11 3.02±0.26a 40.2±2.0 21.1±4.8 315.4±6.2a,b 
Spring activity 7.61±0.97 0.90±0.14 3.97±0.40 1.34±0.21 43.1±1.5 35.5±6.1 293.7±2.3 

`Autumn activity' corresponds to late autumn, and `arousal' corresponds to rehydrated, unfed animals in Table 1. Values are the mean ± s.e.m. from six animals; a indicates significant differences from autumn activity, b from spring activity (P<0.05).

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