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Showing 1 to 20 of 118 for “"lizards"”.
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Phenotypes and Survival of Hatchling Lizards
… moisture conditions that female eastern fence lizards (Sceloporus undulatus) select when provided a range of conditions from which to choose. In general, I found that females selected nest sites with conditions that yield high hatching success. In Chapter two, I investigated the relative …
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A Phylogenetic and Environmental Analysis of Brazilian Placosoma Lizards
… is a genus comprised of the Brazilian spectacled lizards <em>P. champsonotus</em>, <em>P. cipoense</em>, <em>P. cordylinum</em>, <em>P. glabellum</em>, and <em>P. limaverdorum</em>. While <em>P. champsonotus</em>, <em>P. cordylinum</em>, and <em>P. glabellum</em> occupy the southern coast of …
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The energetic consequences of tail loss to juvenile lizards
… group and for the tail-removal than the tailed lizards. For <u>C. ocellatus</u>, relative linear tail growth was not affected by energy level but was lower for tail-removal than tailed lizards. For both species, relative tail mass growth was lower for the tail-removal than tailed lizards. The …
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The Molecular Systematics of the Side-blotched Lizards (IGUANIA: PHRYNOSOMATIDAE: UTA)
… The molecular evolution of the side-blotched lizards is analyzed using 1132 base pairs of mitochondrial DNA sequence from the cytochrome b and cytochrome oxidase III genes. Samples come from 98 'individuals from 50 islands in the Gulf of California and Pacific Ocean and 48 adjacent populations …
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Home Field Advantage: Sprint Sensitivity to Ecologically Relevant Substrates in Lizards
… rocky, sandy, and/or semi-arboreal habitats. Lizards that use rocky habitats are less sensitive to changes in substrate rugosity, followed by arboreal lizards, and then by lizards that use sandy habitats. Phylogenetic analysis suggests that using rocks is highly correlated with decreased …
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Adaptation to aridity in lizards of the Egernia Whitei species-group
122 leaves : ill.
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The Effect of Quality of Light on Agonistic Behavior of Iguanid Lizards
Made available in DSpace on 2014-12-12T01:27:33Z (GMT). No. of bitstreams: 1 7121186.pdf: 2515586 bytes, checksum: e88aa7efcbf2c1a4a66864fc9f2fcc47 (MD5) Previous issue date: 1971
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Physiological and Ecological Constraints on the Evolution of Viviparity in Sceloporine Lizards
… on the evolution of viviparity in sceloporine lizards. In Chapters one and two, I investigated the role of in utero oxygen availability as a constraint on the capacity to support embryonic development during extended egg retention. I incubated eggs of sceloporine lizards under conditions that …
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The effects of paleoclimate on the distributions of some North West African Lizards.
… to species occurrence data on northwest African lizards from Morocco, with corresponding environmental data. The aim was to identify how intraspecific divergence might be related to historical climatic events. Species distribution models (SDMs) were used to quantify a species niche and define the …
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The Hormonal Basis for the Reproductive Cycle in Reptiles, With Emphasis on Lizards.
In its adaptation to a particular ecological niche, every species of animal has attained various adjustments in the timing of its reproductive efforts and in the number of offspring produced. This is especially true among reptiles, who have utilized a diversity of reproductive "strategies" while …
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A comparative display analysis of three sibling species of Anolis lizards from Hispaniola
… repertoires of three sibling species of Anolis lizards, were quantitatively analyzed and described. These species are distributed along Haiti's western coast with no major geographic barriers separating their populations. Anolis websteri is the northernmost species, Anolis caudalis is centrally …
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Survival, Movement, and Fine-Scale Habitat Selection of Reintroduced Texas Horned Lizards (Phrynosoma cornutum)
… conservation effort is needed for Texas Horned Lizards, requiring more detailed knowledge of their habitat requirements. The habitat description given by many researchers is vague, such as that from Burrow et al. (2001): “a mosaic of bare ground, herbaceous vegetation, and woody vegetation in …
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The Effects of Locomotor Posture on Kinematics, Performance and Behavior during Obstacle Negotiation in Lizards
… from high-speed video (300 frames/second) of lizards running down a 3m runway both with and without the presence of an obstacle. Among species, I observed high variation in kinematics, locomotor performance and behavior when crossing obstacles. Within species, mean forward speed (velocity) and …
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Old World Serpents and New World Dragons: The Evolutionary Dynamics of Pythons and Liolaemid Lizards
… and ecological diversity. Liolaemid lizards (Liolaemidae), found in the southern portion of South America, also are diverse in their habitat use, reproductive mode and thermal niche, but are extremely species rich, with almost 300 currently recognized species. Both pythons and …
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Old World Serpents and New World Dragons: The Evolutionary Dynamics of Pythons and Liolaemid Lizards
… and ecological diversity. Liolaemid lizards (Liolaemidae), found in the southern portion of South America, also are diverse in their habitat use, reproductive mode and thermal niche, but are extremely species rich, with almost 300 currently recognized species. Both pythons and …
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Taxonomy and Distribution of the Jarrovi Complex of Lizards of the Torquatus Group, Genus Sceloporus
Made available in DSpace on 2014-12-10T18:13:21Z (GMT). No. of bitstreams: 1 6408367.pdf: 6677839 bytes, checksum: 71d089b11b1ec566f23873ca4e85bada (MD5) Previous issue date: 1964
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Localization of Calbindin-D<sub>28k</sub> in Extra-Embryonic Membranes of Two Oviparous Scincid Lizards.
… and yolk sac of oviparous squamate reptiles (lizards and snakes) transport calcium from the eggshell and yolk to the developing embryo. I used immunohistochemistry to localize calbindin-D<sub>28K</sub> expression in the chorioallantoic membrane and yolk sac of two species of oviparous scincid …
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Factors Influencing Ectoparasitism on Western Fence Lizards (Sceloporus occidentalis): Host Sex, Testosterone, Reproductive Condition, and Behavior
… concentrations 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 …
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