BIBLIOGRAPHY 



1. Allred, D. M. and D. E. Beck. 1962. Ecological distribution of 

 mites on lizards at the Nevada Atomic Test Site. HERPETOLOGICA 

 18(1): ^7-51. 



Cnemidophorus tigris tigris hosted Odontacarus arizonensis and 

 Eutrombicula belkini. Areas of greatest infestation were in the di- 

 rections of fallout from nuclear detonations. 



2. Anderson, R. A. and W. H. Karasov. 1981. Contrasts in energy 

 intake and expenditure in sit-and-wait and widely foraging lizards. 

 OECOLOGIA (BERLIN) ^^9(1): 67-72. 



Daily energy metabolism and water flux were measured with doubly 

 labeled H2O in free-living Cnemidophorus tigris in the Colorado Desert 

 of California. 91% of the 5-hour active day is spent in movement. The 

 costs of free existence were calculated from the difference between 

 field metabolism rates and maintenance costs estimated in the labora- 

 tory. C. tigris was found to be energy efficient. 



3. Asplund, K. K. 1970. Metabolic scope and body temperatures of 

 whiptail lizards (Cnemidophorus) . HERPETOLOGICA 26(^): ^03-^11. 



Individual Cnemidophorus tigris, when active near the eccritic body 

 temperature, (1) consume over 2 cc of oxygen per gram-hour, more than 

 a resting mammal of the same size, (2) attain body temperatures 1-2 de- 

 grees Centigrade above ambient if they weigh 80-100 grams. These pro- 

 perties are similar to but much greater than those of varanid lizards. 

 Thermogenesis (muscular activity) could play a role in the thermal eco- 

 logy and habitat selection of macroteiid lizards. 



*. — . 197^. Body size and habitat utilization in whiptail lizards 

 (Cnemidophorus) . COPEIA 197if(3): 695-703. 



This study involved field and laboratory manipulations of sub- 

 species of Cnemidophorus tigris of varying sizes, including _C^. tigris 

 gracilis . Whiptails have the highest known sustained rates of oxida- 

 tive metabolism among reptiles. Body size plays a relatively direct 

 role in determining the thermospatial niche of these lizards. Larger 

 lizards bask less and spend more of their activity period in the shade 

 than do smaller lizards with the same thermal preferenda and tolerance 

 limits. Variation of body size in Cnemidophorus may reflect adaptation 



