Table 2.

Body mass, snout–vent and total length, and wet and dry mass for organs removed from fasted and fed Python species

P. brongersmaiP. molurusP. regiusP. reticulatusP. sebae
VariableFasted2 d.p.f.Fasted2 d.p.f.Fasted2 d.p.f.Fasted2 d.p.f.Fasted2 d.p.f.
N 3333333333
Body mass (g)818±136861±42790±109769±29741±110710±85815±99753±48780±112852±25
Snout–vent length (cm)89.3±4.589.5±1.3120.7±8.8122.3±1.998.1±9.297.8±6.2154.3±7.1145.5±4.8119.3±5.8117.0±1.0
Total length (cm)96.2±4.896.5±4.8135.0±9.5137.0±3.1106.7±9.6105.7±6.9178.2±7.8166.7±5.2134.7±6.6132.7±1.3
Wet mass (g)
   Heart2.00±0.442.57±0.622.05±0.252.06±0.151.78±0.111.61±0.051.75±0.171.65±0.151.99±0.282.37±0.45
   Lung5.22±1.095.03±0.666.42±0.666.96±0.175.24±0.794.02±0.325.84±0.796.76±1.465.69±0.526.20±0.26
   Liver11.1±2.620.5±1.6*8.27±0.3214.3±0.9*9.17±0.7612.8±0.4*8.50±2.1615.8±0.8*11.8±1.418.7±1.2*
   Stomach10.1±2.114.6±2.310.1±2.114.3±1.27.09±0.8011.9±3.010.5±0.812.1±1.111.9±1.614.7±0.5
   Gall bladder1.75±0.611.10±0.552.92±0.332.01±0.191.70±0.021.59±0.223.93±0.312.09±0.14*2.62±0.292.50±0.35
   Pancreas0.89±0.161.42±0.10*0.71±0.080.94±0.070.61±0.100.83±0.100.93±0.190.99±0.030.86±0.111.14±0.10
   Spleen0.06±0.010.11±0.040.10±0.010.14±0.020.06±0.000.06±0.000.09±0.000.05±0.030.17±0.040.18±0.05
   Small intestine10.4±2.323.7±1.0*10.6±0.425.3±4.1*8.34±0.7713.7±1.9*13.9±0.723.0±2.6*10.5±1.224.1±0.05*
   Large intestine8.17±2.168.89±0.956.51±0.979.14±0.905.07±0.754.91±0.664.86±0.525.34±0.376.03±0.807.42±0.33
   Kidneys3.76±0.747.23±0.60*3.49±0.456.14±0.09*3.32±0.644.74±0.35*3.78±0.435.04±0.36*4.34±0.267.37±0.53*
Dry mass (g)
   Heart0.30±0.130.34±0.080.33±0.050.32±0.020.27±0.050.28±0.010.33±0.010.26±0.030.38±0.070.38±0.05
   Lung0.79±0.220.74±0.101.19±0.141.20±0.040.83±0.070.74±0.101.26±0.131.22±0.261.08±0.171.20±0.04
   Liver5.05±1.226.19±1.023.01±0.053.75±0.26*2.49±0.153.37±0.16*3.10±0.354.27±0.18*4.68±0.696.48±0.43*
   Stomach1.93±0.451.97±0.262.56±0.122.74±0.261.31±0.142.07±0.482.34±0.222.45±0.182.36±0.373.06±0.16
   Gall bladder0.32±0.210.31±0.240.56±0.080.48±0.100.17±0.080.21±0.090.47±0.170.32±0.060.48±0.100.43±0.06
   Pancreas0.11±0.040.25±0.010.14±0.010.12±0.000.13±0.020.15±0.020.22±0.050.21±0.010.19±0.030.23±0.02
   Spleen0.02±0.000.02±0.010.02±0.000.03±0.000.01±0.000.01±0.000.02±0.000.01±0.010.03±0.010.04±0.01
   Large intestine1.25±0.281.34±0.151.20±0.171.29±0.120.86±0.140.60±0.031.01±0.110.94±0.101.10±0.161.53±0.15
   Kidneys0.76±0.161.14±0.060.63±0.231.25±0.17*0.64±0.130.75±0.061.03±0.111.04±0.130.80±0.081.40±0.10*
  • Organs were weighed immediately after removal from three fasted and three fed [2 days postfeeding (d.p.f.)] individuals of each Python species

  • * Significant differences in organ mass between fasted and fed snakes, determined by ANCOVA (P<0.05)