Guppy M, Davison W
J Exp Zool. 1982 May 1;220(3):289-95. doi: 10.1002/jez.1402200304.
Two lizards--a skink capable of fast short dashes, and a chameleon, incapable of fast movement--have been studied to determine the degree of metabolic diversity that exists in this group of reptiles. Oxygen uptake measurements, skeletal muscle histochemistry, and enzyme and metabolite levels in cardiac and skeletal muscles reveal that the skink has a higher metabolic potential, both aerobic and anaerobic, than the chameleon. The difference, however, is not as large as is indicated by the behaviors of the two lizards. Levels of citrate synthase and B-hydroxybutaryl CoA dehydrogenase in the hearts of both the lizards are high and indicate mammalian-level metabolic capabilities.
研究了两种蜥蜴——一种能够快速短距离冲刺的石龙子和一种无法快速移动的变色龙，以确定这组爬行动物中存在的代谢多样性程度。对氧气摄取的测量、骨骼肌组织化学以及心脏和骨骼肌中的酶和代谢物水平显示，石龙子在有氧和无氧代谢方面都比变色龙具有更高的代谢潜力。然而，这种差异并不像两种蜥蜴的行为所显示的那么大。两种蜥蜴心脏中的柠檬酸合酶和β-羟基丁酰辅酶A脱氢酶水平都很高，表明具有哺乳动物水平的代谢能力。
