Lizard energetics and diet

Show simple item record Pough, F. Harvey en_US 2006-08-25T18:17:06Z en_US 2006-08-25T18:17:06Z en_US 1973-07 en_US
dc.identifier.citation Ecology 54N4 (1973) 837-844 en_US
dc.identifier.issn 0012-9658 en_US
dc.identifier.uri en_US
dc.description Article may be found at: en_US
dc.description.abstract In the families Agamidae, Gerrhosauridae, Iguanidae, and Scincidae, species that weigh more than 300 g are almost all herbivores, whereas those weighing less than 50-100 g are carnivores. Juveniles of large herbivorous species tend to be carnivorous until they reach body weights of 50-300 g. Diet is compared to metabolic expenditure in these lizards. Although smaller animals have higher weight-specific metabolic rates, the greater total metabolicrate of larger animals requires a greater caloric intake. Juvenile animals and species of small body size are primarily insectivorous. It is postulated that larger animals of these families are unable to get caloric demands on a diet of insects, have no practical alternative animal prey, and rely instead on vegetation. The families Anguidae, Chamaeleontidae, Helodermatidae, Teiidae, and Varanidae do not include herbivorous species, although each family has species that weigh more than 300 g. Morphological, ecological, and physiological specializations in these families account for the absence of herbivorous species. For an unspecialized lizard, evolution of large body size both requires and permits an herbivorous diet. en_US
dc.description.sponsorship This study was supported by NSF Grant GB 18,985. en_US
dc.format.extent 37555 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.publisher The Ecological Society of America: Ecology en_US
dc.relation RIT Scholars content from RIT Digital Media Library has moved from to RIT Scholar Works, please update your feeds & links!
dc.subject Lizards- diet en_US
dc.title Lizard energetics and diet en_US
dc.type Article en_US

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