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Table 4.

Comparison of Cminfor male and female Aphonopelma anax measured in this study with values determined from interspecific arthropod data(Lighton, 1985) and interspecific vertebrate and invertebrate data(Gatten et al., 1992)

Cmin (μl CO2m-1)
Females (mass 15.72 g)Males (mass 6.91 g)
Empirical Cmin (this study) 32.32 18.52 
Predicted Cmin(Lighton, 1985) 30.08 16.97 
Predicted Cmin (Gatten et al., 1992) 27.19 15.96 
Cmin (μl CO2m-1)
Females (mass 15.72 g)Males (mass 6.91 g)
Empirical Cmin (this study) 32.32 18.52 
Predicted Cmin(Lighton, 1985) 30.08 16.97 
Predicted Cmin (Gatten et al., 1992) 27.19 15.96 

Cmin predicted for a 6.91 g male and a 15.72 g female tarantula were converted from their original units toμlCO2m-1 using a respiratory quotient of 0.92 and joule/CO2 coefficients from Gessman and Nagy(1988).

Cmin, minimum cost of transport.

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