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Showing 1 to 13 of 13 for “"herpetology"”.
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Molecular phylogenetics of the North American snake tribe Thamnophiini
Advancements in phylogenetic theory and methodology coupled with improvements in computational and sequencing technology facilitate study of the divergence and diversification patterns of life. I apply our current understanding to further explore the relationships and evolution of the North …
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The Past, Present, and Future of Large Reptiles: Rewilding, Climate Change, and Conservation Palaeobiology
Species extinctions reduce the diversity of functions that an ecosystem can provide, with negative effects for both natural habitats and society. Rewilding is the restoration of these ecosystem functions by returning locally extinct species or their ecological analogues to an environment. Rewilding …
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A Herpetofaunal Inventory Study of two National Wildlife Refuges in the Mississippi Delta and Associated Evaluation of Trapping Efficacy
<p>The objectives of this project were to record the diversity and distribution of amphibian and reptile species present at Panther Swamp and Hillside National Wildlife Refuges (NWR) and to quantify trapping efficacy as a result of various methodologies under different habitat variables. The …
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The biotic effects of tertiary geoclimatic change in the southern hemisphere
I explore how pre-Quaternary geoclimatic phenomena and geographical heterogeneity influenced sub-continental speciation processes and contemporary biogeographic patterns across the Southern Hemisphere, with particular focus on two regions that have experienced elevated levels of ongoing …
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The Systematics, Biogeography, and Natural History of the Endemic Papuan Snake Genus Toxicocalamus (Elapidae: Hydrophiinae)
Toxicocalamus Boulenger 1896, is a genus of front-fanged venomous snakes belonging to the Australo-Melanesian subfamily Hydrophiinae, in the near-global family Elapidae. It is endemic to the island of New Guinea, and its satellites, the d’Entrecasteaux and Louisiade Archipelagos, in Milne Bay …
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Radiotelemetry and Behavioral Ecology of Neonate Southern Pacific Rattlesnakes
<p>By externally glueing radiotransmitters to the dorsoposterior surface of seven neonate Southern Pacific Rattlesnakes, <em>Crotalus oreganus helleri,</em> I monitored the behavior and ecology of this understudied age-class and species. As an alternative to surgical implantation, external …
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Fossoriality In Snakes: Perspectives From Morphology And The Fossil Record
Snakes are a speciose clade of squamates that have diversified into almost all habitats, all with the same elongate limbless body plan. This thesis aims to improve scientific understanding of snake evolution by focusing on novel perspectives using both extant snakes and the fossil record. 1. …
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Tracking Toads: Movement Patterns of Gulf Coast Toads (Incilius nebulifer) and the Urban Environment
Gulf Coast Toads (Incilius nebulifer) are a familiar urban resident in the southeast United States and Mexico. As urbanization increases, the Gulf Coast Toad may be expanding its range. Studying movement behavior can reveal how invasive a species may be and is a key factor in understanding the …
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Demography of Alligator Snapping Turtles (Macrochelys Temminckii) Along a Fishing Pressure Gradient
<p>Passive fishing gear is a threat to the alligator snapping turtle (<em>Macrochelys temminckii</em>). The spatio-temporal persistence of this threat and its impacts on <em>M. temminckii</em> populations has not been quantified. I quantified the density of passive fishing gear and the demographic …
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A Reexamination of the Eastern Collared Lizard (Crotaphytus collaris collaris) in Arkansas
<p>Loss of suitable habitat is a threat to species worldwide. Habitat destruction, including loss, change, and fragmentation of habitat, is the leading cause of species extinction. Eastern collared lizards (<em>Crotaphytus collaris collaris</em>) are habitat specialists on glades. Both <em>C. c. …
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The Interactive Effects of Multiple Stressors on Lithobates catesbeianus and Anaxyrus americanus
<p>Amphibian populations worldwide have experienced dramatic declines, and many species have already become locally, regionally, or globally extirpated with thousands more being threatened with extinction. These declines have occurred more rapidly in amphibians than any other group of vertebrates, …