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Diel Variation of Oxygen Consumption in Three Species of Philippine Gekkonid Lizards
Martin E. Feder and Juliana H. Feder
Vol. 1981, No. 1 (Feb. 10, 1981), pp. 204-209
Stable URL: http://www.jstor.org/stable/1444056
Page Count: 6
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Three species of nocturnal Philippine geckos, Cosymbotus platyurus, Hemidactylus frenatus and Lepidodactylus lugubris, were examined to determine the extent of correlation between diel variation in rate of oxygen consumption ( V̇ o2 ) and activity state. Standard V̇ o2 of the three species are indistinguishable after adjustment for differences in body size. A single equation predicts standard V̇ o2 for all three species: Standard V̇ o2 =131.9 Weight0.709, where V̇ o2 is in μ l· h-1 and weight is in g. Standard V̇ o2 is lower than rates previously reported for most other reptiles, but similar to rates for other geckos. Routine V̇ o2 varied significantly throughout the day in H. frenatus and L. lugubris; in these two species routine V̇ o2 is higher at night than during the day. The three species differ in the duration and timing of maxima and minima in routine V̇ o2 . Diel variation in V̇ o2 is sometimes correlated with activity state, but often is not.