Low Metabolic Rate in a Nocturnal Desert Lizard, Anarbylus switaki Murphy (Sauria: Gekkonidae)

Robert W. Putnam; Robert W. Murphy

doi:10.1016/0300-9629(82)90376-0

Low Metabolic Rate in a Nocturnal Desert Lizard, Anarbylus switaki Murphy (Sauria: Gekkonidae)

Robert W. Putnam, Robert W. Murphy

Wright State University

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Abstract

1. Metabolic rates were measured in two xeric-adapted gekkonid lizards, Anarbylus switaki and Coleonyx variegatus . 2. Standard metabolic rates (SMR) were 0.074 ml O 2 /g hr in A. switaki and were 70% of the value predicted on the basis of mass from regression equations. The SMR of 0.146ml O 2 /g hr in C. variegatus is similar to the predicted value for a lizard of this mass. 3. During intense activity, metabolic rates of 0.378 and 0.804ml O 2 /g hr were measured in A. switaki and C. variegatus , respectively. 4. Various theories to explain reduced SMR in lizards are discussed, and it is concluded that none is entirely satisfactory, and caution should be exercised in interpreting the adaptive significance of reduced SMR.

Original language	American English
Journal	Comparative Biochemistry and Physiology Part A: Physiology
Volume	71
DOIs	https://doi.org/10.1016/0300-9629(82)90376-0
State	Published - Jan 1 1982

Disciplines

Medical Cell Biology
Medical Neurobiology
Medical Physiology
Medical Sciences
Medicine and Health Sciences
Neurosciences
Physiological Processes

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title = "Low Metabolic Rate in a Nocturnal Desert Lizard, Anarbylus switaki Murphy (Sauria: Gekkonidae)",

abstract = " 1. Metabolic rates were measured in two xeric-adapted gekkonid lizards, Anarbylus switaki and Coleonyx variegatus . 2. Standard metabolic rates (SMR) were 0.074 ml O 2 /g hr in A. switaki and were 70% of the value predicted on the basis of mass from regression equations. The SMR of 0.146ml O 2 /g hr in C. variegatus is similar to the predicted value for a lizard of this mass. 3. During intense activity, metabolic rates of 0.378 and 0.804ml O 2 /g hr were measured in A. switaki and C. variegatus , respectively. 4. Various theories to explain reduced SMR in lizards are discussed, and it is concluded that none is entirely satisfactory, and caution should be exercised in interpreting the adaptive significance of reduced SMR. ",

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N2 - 1. Metabolic rates were measured in two xeric-adapted gekkonid lizards, Anarbylus switaki and Coleonyx variegatus . 2. Standard metabolic rates (SMR) were 0.074 ml O 2 /g hr in A. switaki and were 70% of the value predicted on the basis of mass from regression equations. The SMR of 0.146ml O 2 /g hr in C. variegatus is similar to the predicted value for a lizard of this mass. 3. During intense activity, metabolic rates of 0.378 and 0.804ml O 2 /g hr were measured in A. switaki and C. variegatus , respectively. 4. Various theories to explain reduced SMR in lizards are discussed, and it is concluded that none is entirely satisfactory, and caution should be exercised in interpreting the adaptive significance of reduced SMR.

AB - 1. Metabolic rates were measured in two xeric-adapted gekkonid lizards, Anarbylus switaki and Coleonyx variegatus . 2. Standard metabolic rates (SMR) were 0.074 ml O 2 /g hr in A. switaki and were 70% of the value predicted on the basis of mass from regression equations. The SMR of 0.146ml O 2 /g hr in C. variegatus is similar to the predicted value for a lizard of this mass. 3. During intense activity, metabolic rates of 0.378 and 0.804ml O 2 /g hr were measured in A. switaki and C. variegatus , respectively. 4. Various theories to explain reduced SMR in lizards are discussed, and it is concluded that none is entirely satisfactory, and caution should be exercised in interpreting the adaptive significance of reduced SMR.

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U2 - 10.1016/0300-9629(82)90376-0

DO - 10.1016/0300-9629(82)90376-0

M3 - Article

VL - 71

JO - Comparative Biochemistry and Physiology Part A: Physiology

JF - Comparative Biochemistry and Physiology Part A: Physiology

ER -

Low Metabolic Rate in a Nocturnal Desert Lizard, Anarbylus switaki Murphy (Sauria: Gekkonidae)

Abstract

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