Arid
DOI10.1086/515887
Correlates of average daily metabolism of field-active zebra-tailed lizards (Callisaurus draconoides)
Karasov, WH; Anderson, RA
通讯作者Karasov, WH
来源期刊PHYSIOLOGICAL ZOOLOGY
ISSN0031-935X
出版年1998
卷号71期号:1页码:93-105
英文摘要

The extent of variation in reptile field metabolism, and its causal bases, are poorly understood. We studied the energetics of the insectivorous lizard Callisaurus draconoides at a site in the California Desert (Desert Center) and at a site at the southern tip of the Baja Peninsula (Cabo San Lucas; hereafter, Cabo). Reproducing Callisaurus were smaller at Cabo than at Desert Center. The allometry of metabolism with body mass can account for most differences in whole-animal metabolism. There was no significant effect of sex or source population on mass-adjusted metabolic rate in the laboratory (resting metabolism, measured by closed-system respirometry) or in the field (field metabolism, measured with doubly labeled water). The mass-adjusted resting metabolism and field metabolism of gravid females and the field metabolism of juvenile lizards were not significantly different from those of nonreproductive adults. Temperature had a significant effect on resting metabolism (Q(10) = 2.7); fed lizards had resting metabolism that was 22% higher than that of fasted lizards; field metabolism was positively correlated with growth rate in juveniles; and field metabolism of adults increased from spring to late summer at Desert Center by 25%, probably because of longer activity period length and slightly higher activity period body temperature. We calculated from water influx and field metabolism that juveniles allocated 18% of their metabolizable energy intake to growth and that most energy deposited into eggs was transferred from energy stores rather than ingested in the weeks prior to laying.


类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000071808900011
WOS关键词LABELED WATER METHOD ; OXYGEN-CONSUMPTION ; FOOD-ACQUISITION ; POTENTIAL ERRORS ; CO2 PRODUCTION ; ENERGETICS ; POPULATIONS ; TEMPERATURE ; EXPENDITURE ; AUSTRALIA
WOS类目Physiology ; Zoology
WOS研究方向Physiology ; Zoology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/136516
作者单位(1)Univ Wisconsin, Dept Wildlife Ecol, Madison, WI 53706 USA;(2)Western Washington Univ, Dept Biol, Bellingham, WA 98225 USA
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GB/T 7714
Karasov, WH,Anderson, RA. Correlates of average daily metabolism of field-active zebra-tailed lizards (Callisaurus draconoides)[J],1998,71(1):93-105.
APA Karasov, WH,&Anderson, RA.(1998).Correlates of average daily metabolism of field-active zebra-tailed lizards (Callisaurus draconoides).PHYSIOLOGICAL ZOOLOGY,71(1),93-105.
MLA Karasov, WH,et al."Correlates of average daily metabolism of field-active zebra-tailed lizards (Callisaurus draconoides)".PHYSIOLOGICAL ZOOLOGY 71.1(1998):93-105.
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