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HIGHWAY MORTALITY OF SNAKES IN THE SONORAN DESERT OF SOUTHERN ARIZONA
Abstract We present an algebraic method for estimating highway mortality in snakes, based on careful data collection during low-speed driving on paved roads. A total of 368 snakes (104 live, 264Expand
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Comparative Field Study of Thermal Preferenda in Garter Snakes (Thamnophis)
Field body temperature records from seven species of Thamnophis were used to investigate intrageneric variation of body temperature selection under field conditions. There was no evidence forExpand
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Comparative Ecology and Life History of the Racer (Coluber constrictor) in Michigan
The racer, Coluber constrictorfoxii, was studied over a six-year period in southeastern Michigan. The minimum age at maturity was 11 months in males and two years in females. Both sexes grew rapidly,Expand
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The herpetofauna of Sonora, Mexico, with comparisons to adjoining states
Situated in the topographically complex transition between the Neotropics and the temperate biomes of North America, the state of Sonora, Mexico, has an extraordinarily diverse herpetofauna.Expand
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Potential environmental influences on variation in body size and sexual size dimorphism among Arizona populations of the western diamond-backed rattlesnake (Crotalus atrox)
Differences in resource availability and quality along environmental gradients are important influences contributing to intraspecific variation in body size, which influences numerous life-historyExpand
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Herpetofauna of lowland bottomlands of southeastern Arizona: a comparison of sites
We intensively sampled the riparian herpetofauna at three sites in southeastern Arizona, a canyon site, Leslie Canyon, and two lowland sites, San Bernardino NWR and Empire-Cienega Creek at LasExpand
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Effects of the Chytrid fungus on the Tarahumara frog (Rana tarahumarae) in Arizona and Sonora, Mexico
We conducted histological analyses on museum specimens collected 1975-1999 from 10 sites in Arizona and Sonora to test for the pathogenic chytrid fungus (Batrachochytrium dendrobatidis) in ranidExpand
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Female reproduction in the western diamond-backed rattlesnake, Crotalus atrox (Serpentes: Viperidae), from Arizona
Reproductive tissue was examined from 46 sexually mature female Crotalus atrox specimens from Arizona, and additional data were obtained from gravid females held in the laboratory and from palpationExpand
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Shaping species with ephemeral boundaries: the distribution and genetic structure of desert tortoise (Gopherus morafkai) in the Sonoran Desert region
Aim We examine the role biogeographical features played in the evolution of Morafka's desert tortoise (Gopherus morafkai) and test the hypothesis that G. morafkai maintains genetically distinctExpand
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Introduced aquatic vertebrates in the Chiricahua region: effects on declining native ranid frogs
-The Chiricahua Mountain region offers an outstanding opportunity to manage an aquatic vertebrate fauna that is widely in decline or already threatened or endangered. The fauna is diverse, andExpand
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