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Table 1.

Resting rates of mass-specific oxygen consumption(V̇O2) and the scaling relationship with body mass in tegu lizards during the first annual cycle

Seasonal activity stateVo2 (ml O2 h−1g−1)Body mass (g)abr2
Autumn activity      
Early 0.0627±0.0057b-e 92.6±14.9 −0.75±0.37 0.75±0.19 0.60 
Late 0.0309±0.0033a,c-e,f 111.1±18.7 −2.09±0.47 1.27±0.24 0.74 
Winter dormancy 0.0119±0.0013a,b,d-f 104.4±12.1 −2.18±0.68 1.12±0.34 0.52 
Arousal      
Unfed 0.0273±0.0023a-c,e,f 94.1±9.1 −1.50±0.72 0.94±0.37 0.40 
Fed 0.0477±0.0042a-d,f 113.7±8.4 −2.81±0.60 1.72±0.29 0.77 
Spring activity 0.0636±0.0045b-e 129.6±14.8 −1.13±0.429 0.96±0.20 0.70 
Seasonal activity stateVo2 (ml O2 h−1g−1)Body mass (g)abr2
Autumn activity      
Early 0.0627±0.0057b-e 92.6±14.9 −0.75±0.37 0.75±0.19 0.60 
Late 0.0309±0.0033a,c-e,f 111.1±18.7 −2.09±0.47 1.27±0.24 0.74 
Winter dormancy 0.0119±0.0013a,b,d-f 104.4±12.1 −2.18±0.68 1.12±0.34 0.52 
Arousal      
Unfed 0.0273±0.0023a-c,e,f 94.1±9.1 −1.50±0.72 0.94±0.37 0.40 
Fed 0.0477±0.0042a-d,f 113.7±8.4 −2.81±0.60 1.72±0.29 0.77 
Spring activity 0.0636±0.0045b-e 129.6±14.8 −1.13±0.429 0.96±0.20 0.70 

Values are the mean ± 1 s.e.m. from 10-12 different animals measured at 25°C, except in winter dormancy when 17°C was used. Linear regressions were performed on log-transformed Vo2 (ml O2 h−1) and body mass(g) as described by log10Vo2=a+b log10Mb, where a is the intercept ± s.e.m., b is the slope ± s.e.m. and Mbis body mass; a indicates significant differences from early autumn, b from late autumn, c from winter dormancy, d from unfed arousal, e from fed arousal, ffrom spring activity (P<0.05).

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