Global ETD Search
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Showing 1 to 7 of 7 for “"Sceloporus occidentalis"”.
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The Thermal Ecology of Sceloporus occidentalis
… thermal maximum of the western fence lizard, <em>Sceloporus occidentalis</em>, in all four seasons, both under field (same-day) and short (two-day) lab-acclimated conditions. We found that thermal tolerance varied seasonally, with the lowest values in the summer in both same-day and two-day …
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Factors Influencing Ectoparasitism on Western Fence Lizards (Sceloporus occidentalis): Host Sex, Testosterone, Reproductive Condition, and Behavior
… in male western fence lizards (<em>Sceloporus occidentalis</em>) induce higher tick intensities. To examine this hypothesis I implanted male lizards with either testosterone or blank implants in the field. The testosterone-implanted males had significantly higher tick intensities …
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Effects of Testosterone on the Spatial Ecology, Coloration, and Brain Regions in Western Fence Lizards, Sceloporus occidentalis
… (1) T affects the home range size of <em>Sceloporus occidentalis </em>and (2) cortical brain region volumes are related to home range size and/or T which is mediated through changes in rates of neurogenesis. We surgically castrated individuals and implanted subjects with either a T-filled …
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Physiological Factors Affecting the Bactericidal Activity of the Western Fence Lizard (Sceloporus occidentalis) for the Lyme Disease Spirochete, Borrelia burgdorferi
<p>The Western Fence Lizard (<em>Sceloporus occidentalis</em>)<em> </em>is a major host of juvenile stages of the Western Black-legged Tick (<em>Ixodes pacificus</em>), which is the vector for the Lyme disease causative spirochete bacterium <em>Borrelia burgdorferi</em> in the western United …
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Sublethal effects of an acetylcholinesterase-inhibiting pesticide on fitness-related traits in the western fence lizard (Sceloporous occidentalis)
… traits in the western fence lizard (Sceloporus occidentalis). Reptiles are the least studied vertebrate taxon in ecotoxicological studies even though contaminants are suspected in contributing to recent population declines. Using multiple dose concentrations within the range expected …
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A Mechanistic and Landscape Scale Approach Quantifying Habitat Suitability of Cheatgrass (Bromus tectorum) Engineered Habitats for Great Basin Reptiles
… unsuitable for at least one reptile species, Sceloporus occidentalis. We suggest that suitable habitat for Great Basin Desert reptiles is altered, or wholly erased, by cheatgrass invasion. Our mechanistic approach to understanding biodiversity loss in the Great Basin Desert will provide a …
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Constraints on the adaptive potential of ectotherms to climate change
… squeeze” (COLS) in wild western fence lizards (Sceloporus occidentalis) along an elevational gradient. Integrating mark-recapture surveys, laboratory metabolic measurements, and biophysical simulations, I find that COLS acts as a potent selective agent, particularly in warmer, low-elevation …