The Ecology and burrowing behavior of the Chihuahuan fringe-footed lizard, Uma exsul

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dc.contributor.author Pough, F. Harvey en_US
dc.contributor.author Morafka, David en_US
dc.contributor.author Hillman, Peter en_US
dc.date.accessioned 2006-08-28T15:11:29Z en_US
dc.date.available 2006-08-28T15:11:29Z en_US
dc.date.issued 1978-02-10 en_US
dc.identifier.citation Copeia 1978N1 (1978) 81-86 en_US
dc.identifier.issn 0045-8511 en_US
dc.identifier.uri http://hdl.handle.net/1850/2515 en_US
dc.description Article may be found at: http://links.jstor.org/sici?sici=0045-8511(19780210)3%3A1978%3A1%3C81%3ATEABBO%3E2.0.CO%3B2-N en_US
dc.description.abstract The Chihuahuan Desert lizards Uma e. exsul and U. e. paraphygas are morphologically and ecologically less specialized for life on loose aeolian sand than are the other species of the genus. They do not occur in large areas of vegetationless sand, and are probably limited to areas in which rodents can maintain open burrows year-round. Uma exsul use these burrows to escape from predators and for nocturnal retreat. Only in an area with very dense, low-growing vegetation did we see them bury in loose sand at night. Unlike other species in the genus, U. exsul occurs on dunes in which a large amount of silt is mixed with the sand, and it also lives on hardened silt substrates side by side with Holbrookia maculata. Body temperatures of active U. exsul averaged 38.7 C (S.E. = 0.4, n = 45), the same as other species in the genus, but U. exsul begin activity later in the morning than do the specialized forms. In this respect the behavior of U. exsul is like Callisaurus. Like the other species in the genus, U. exsul shows no physiological adaptations for sand-swimming; heart rates of buried lizards are lower than those of lizards on the surface, but the difference reflects inactivity, not a submergence bradycardia. en_US
dc.format.extent 35234 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.publisher American Society of Ichthyologists and Herpetologists: Copeia en_US
dc.subject Burrowing en_US
dc.subject Ecology en_US
dc.subject Lizards en_US
dc.title The Ecology and burrowing behavior of the Chihuahuan fringe-footed lizard, Uma exsul en_US
dc.type Article en_US

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