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Table 1.

Body mass, meal size, standard metabolic rate (SMR) and postfeeding metabolic measures of peak oxygen consumption(O2), scope of peakO2, duration, specific dynamic action (SDA) and SDA coefficient of six species of anurans

Bufonidae
Leptodactylidae
Ranidae
VariableB. alvariusB. marinusPC. ornataL. pentadactylusPP. adspersusR. catesbeianaP
Body mass (g) 140±8a 137±4a 0.754 169±27a,b 173±13a,b 0.913 225±15b 238±33b 0.724 
N    
Meal size (% of body mass) 15.0±0.0a 15.1±0.10a 0.495 15.0±0.1a 15.0±0.1a 0.817 14.9±0.1a 15.0±0.1a 0.551 
SMR (ml O2 h-14.71±0.28a 6.91±0.35a,b 0.0008 5.97±0.98a,b 8.41±0.32b 0.045 5.93±0.55a,b 15.0±2.5c 0.0002 
SMR (ml O2 h-1) adjusted to body mass of 180 g 5.60±0.20a 8.37±0.49b 0.0004 6.20±0.42a,b 8.74±0.27b 0.005 5.05±0.27a 12.2±1.2c 0.0002 
SMR (ml O2 g-1 h-10.034±0.001a,b 0.051±0.001c 0.0004 0.036±0.002b 0.050±0.003c 0.003 0.026±0.001a 0.063±0.005d 0.0002 
Peak O2 (ml h-130.4±6.5a 27.0±2.1a 0.175 69.4±11.1b 29.5±2.3a <0.0001 56.6±7.0b 60.9±12.9b 0.740 
Peak O2 (ml h-1) adjusted to body mass of 180 g 37.6±1.1a,b 33.9±2.5a 0.209 71.8±4.4b 30.6±1.1a <0.0001 46.6±4.4a 46.9±7.1a 0.672 
Peak O2 (ml g-1 h-10.216±0.005a 0.196±0.004a 0.230 0.405±0.022b 0.171±0.006a <0.0001 0.251±0.023a 0.250±0.036a 0.631 
Scope of peak O2 6.46±0.13b 3.90±0.30a <0.0001 11.6±14c 3.50±0.21a <0.0001 9.65±0.91c 3.94±0.35a <0.0001 
Duration (days)    
SDA (kJ) 36.6±3.0a,b,c 23.8±1.5a 0.001 50.8±9.0c,d 30.5±2.6a,b 0.0001 57.3±4.3d 41.2±8.1b,c 0.040 
SDA (kJ) adjusted to body mass of 180 g 47.0±2.5b 31.4±1.7a 0.0004 52.4±3.4b 31.8±1.4a 0.0002 45.8±2.65b 30.3±3.6a 0.0008 
SDA (kJ kg-1260±11b 173±8a 0.0004 291±17b 179±8a 0.0002 256±15b 169±20a 0.0008 
SDA coefficient 28.9±1.2b 19.2±1.0a 0.0005 32.3±1.9b 19.6±0.8a 0.0003 28.6±1.5b 18.9±2.3a 0.002 
Bufonidae
Leptodactylidae
Ranidae
VariableB. alvariusB. marinusPC. ornataL. pentadactylusPP. adspersusR. catesbeianaP
Body mass (g) 140±8a 137±4a 0.754 169±27a,b 173±13a,b 0.913 225±15b 238±33b 0.724 
N    
Meal size (% of body mass) 15.0±0.0a 15.1±0.10a 0.495 15.0±0.1a 15.0±0.1a 0.817 14.9±0.1a 15.0±0.1a 0.551 
SMR (ml O2 h-14.71±0.28a 6.91±0.35a,b 0.0008 5.97±0.98a,b 8.41±0.32b 0.045 5.93±0.55a,b 15.0±2.5c 0.0002 
SMR (ml O2 h-1) adjusted to body mass of 180 g 5.60±0.20a 8.37±0.49b 0.0004 6.20±0.42a,b 8.74±0.27b 0.005 5.05±0.27a 12.2±1.2c 0.0002 
SMR (ml O2 g-1 h-10.034±0.001a,b 0.051±0.001c 0.0004 0.036±0.002b 0.050±0.003c 0.003 0.026±0.001a 0.063±0.005d 0.0002 
Peak O2 (ml h-130.4±6.5a 27.0±2.1a 0.175 69.4±11.1b 29.5±2.3a <0.0001 56.6±7.0b 60.9±12.9b 0.740 
Peak O2 (ml h-1) adjusted to body mass of 180 g 37.6±1.1a,b 33.9±2.5a 0.209 71.8±4.4b 30.6±1.1a <0.0001 46.6±4.4a 46.9±7.1a 0.672 
Peak O2 (ml g-1 h-10.216±0.005a 0.196±0.004a 0.230 0.405±0.022b 0.171±0.006a <0.0001 0.251±0.023a 0.250±0.036a 0.631 
Scope of peak O2 6.46±0.13b 3.90±0.30a <0.0001 11.6±14c 3.50±0.21a <0.0001 9.65±0.91c 3.94±0.35a <0.0001 
Duration (days)    
SDA (kJ) 36.6±3.0a,b,c 23.8±1.5a 0.001 50.8±9.0c,d 30.5±2.6a,b 0.0001 57.3±4.3d 41.2±8.1b,c 0.040 
SDA (kJ) adjusted to body mass of 180 g 47.0±2.5b 31.4±1.7a 0.0004 52.4±3.4b 31.8±1.4a 0.0002 45.8±2.65b 30.3±3.6a 0.0008 
SDA (kJ kg-1260±11b 173±8a 0.0004 291±17b 179±8a 0.0002 256±15b 169±20a 0.0008 
SDA coefficient 28.9±1.2b 19.2±1.0a 0.0005 32.3±1.9b 19.6±0.8a 0.0003 28.6±1.5b 18.9±2.3a 0.002 

Variables are defined in the text. Values are presented as means ± 1 s.e.m.

For each variable, superscript letters that differ denote significant(P<0.05) differences between means among the six species as determined from post-hoc pairwise comparison (Tukey's HSD test).

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