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Effects of Body Temperature and Hydration State on Organismal Performance of Toads, Bufo americanus
(The University of Chicago Press: Physiological and Biochemical Zoology, 2003-03)
Temperature and humidity are dominant environmental variables affecting performance of nocturnal, terrestrial amphibians. Toads are frequently active at body temperatures (Tb) and hydration states (HS) that yield suboptimal ...
Prey-handling and the evolutionary ecology of sand-swimming lizards (Lerista?: Scincidae)
(Springer: Oecologia, 1997-10)
Fossorial lizards differ in morphology from their surface-dwelling relatives. The Australian sphenomorphine skink genus Ctenotus consists of surface-dwelling species, and is closely related to the genus Lerista, which ...
Metabolic correlates of the foraging and social behaviour of dart-poison frogs
(Elsevier: Animal Behaviour, 1990-01)
The foraging and social behaviour of four species of Panamanian dart-poison frogs, Dendrobatidae, were recorded and that information was combined with an analysis of aerobic and anaerobic metabolism and with published ...
Mimicry of vertebrates: are the rules different?
(University of Chicago Press: American Naturalist, 1988-06)
Examples of mimicry among vertebrates are numerically fewer than examples involving insects. The relatively small number of species of vertebrates, compared with the number of species of insects, probably explains some of ...
The ecological cost of morphological specialization: feeding by a fossorial lizard
(Springer: Oecologia, 1987-08)
Head size and shape of reptiles may reflect selection for multiple uses. For example, sexual selection for large head size may enhance feeding efficiency. In contrast, morphological characteristics of the heads of fossorial ...
The abundance of salamanders in forest stands with different histories of disturbance
(Elsevier: Forest Ecology and Management, 1987-07)
Because of the importance of salamanders in forest food chains, the effects of forest management practices on populations of these animals warrant consideration. We compared the numbers and activity patterns of salamanders ...
Energy costs of subduing and swallowing prey for a lizard
(The Ecological Society of America: Ecology, 1985-10)
We measured the oxygen consumption (aerobic energy cost) and lactic acid production (anaerobic energy cost) of scincid lizards, Chalcides ocellatus, eating domestic crickets. Aerobic metabolism accounted for 90% or more ...
Metabolic correlates of anuran behavior
(Oxford University Press: American Zoologist, 1985)
Frogs exhibit extensive diversity in their repertoires of social, reproductive, defensive, and predatory behavior, and in the metabolic processes that support these activities. Three aspects of anuran biology (foraging ...
Diploid and tetraploid grey treefrogs (Hyla chrysoscelis and Hyla versicolor) have similar metabolic rates
(Elsevier: Comparative Biology and Physiology A, 1985)
We measured oxygen consumption of the diploid frog Hyla chrysoscelis and its recently evolved tetraploid cryptic species Hyla versicolor at rest and during forced locomotory exercise. We also measured whole-body lactic ...
Post-metamorphic change in activity metabolism of anurans in relation to life history
(Springer: Oecologia, 1984-12)
Newly-metamorphosed individuals of some species of frogs and toads differ from adults in behavior, ecology, and physiology. These differences may be related to broader patterns of the life histories of different species ...