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Table 2.

Rates of evaporative water loss in B. alvarengai housed at different ambient temperatures

Evaporative water loss
Temperature (°C)(mg H2O h-1)a(mg H2O cm-2h-1)bQ10cr (s cm-1)d
20 50.1±6.2 5.13±0.67  13.3±1.9 
25 62.1±5.7 6.42±0.78 1.59±0.11 14.3±2.1 
30 79.3±2.7 8.55±1.63 1.77±0.30 15.0±2.2 
35 108.0±4.6 11.70±2.38 1.86±0.08 14.2±2.0 
Evaporative water loss
Temperature (°C)(mg H2O h-1)a(mg H2O cm-2h-1)bQ10cr (s cm-1)d
20 50.1±6.2 5.13±0.67  13.3±1.9 
25 62.1±5.7 6.42±0.78 1.59±0.11 14.3±2.1 
30 79.3±2.7 8.55±1.63 1.77±0.30 15.0±2.2 
35 108.0±4.6 11.70±2.38 1.86±0.08 14.2±2.0 

Values are means ± s.e.m. (N=7).

a

All water loss rates were significantly affected by temperature.

b

Evaporative water loss rates were also calculated based on two-thirds (i.e. excluding ventral skin) of the estimated total skin surface area from the equation, SA=9.9Mb0.56 (where surface area SA is in cm2, and Mb is in g)(McClanahan and Baldwin,1969).

c

Q10 values are calculated between adjacent temperatures;temperature did not have a significant effect on Q10(P=0.53).

d

r represents the total resistance to water flux, calculated using the formula from Spotila et al. (Spotila et al., 1992).

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