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Energy metabolism of male and female tarantulas (Aphonopelma anax) during locomotion

Cara Shillington* and Charles C. Peterson

Department of Zoology, Oklahoma State University, Stillwater, OK 74078-3052, USA



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Fig. 1. CO2 (ml h-1) for female (A) and male (B) tarantulas as a function of treadmill speed. Individual data points are shown for each animal, and the corresponding body mass is indicated. Least-squares linear regression lines are shown for aerobic (solid lines) and anaerobic (broken lines) speeds. The highest anaerobic speed of 126.3 m h-1 achieved by the 14 g female is not shown (see Table 1). Individual results are based on single measurements at each speed.

 





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