Browsing Department of Biology by Issue Date
Now showing items 1-20 of 195
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The Food Habits and Feeding Behavior of New World Coral Snakes
(University of Texas at Arlington Libraries, 1973-05-01)This thesis considers the food habits and feeding behavior of New World venomous coral snakes, with emphasis on Micrurus fulvius a species that is found in the southeastern United States and northern Mexico. Literature records ... -
The distribution, variation, and natural history of the middle American highland pitvipers, Bothrops barbouri and Bothrops godmani
(University of Texas at Arlington Libraries, 1977)Ecological limiting factors, morphological characteristics, and life history data were used to explain the possible origin, dispersal, and present distribution of Bothrops godmani and B. barbouri. Museum specimens were ... -
Anti-viral Activity Of Quillaja saponaria Molina Extracts Against HIV-1 And HIV-2
(Biology, 2007-08-23)It has been well established that extracts from the bark of the South American tree Quillaja saponaria Molina have the capacity to stimulate strong immune responses against exogenous antigen when used as an adjuvant. ... -
A Study Of Factors Affecting Scale Roughness In The Western Diamondback Rattlesnake (Crotalus atrox)
(Biology, 2007-08-23)Reptilian scales are very complex with patterns across their surface like a human fingerprint. These patterns are species specific, but there has been no way to quantify differences. A new technique using the confocal ... -
Study Of The Expression Pattern Of A Possible Pseudogene And A Functional Retrogene In Drosophila
(Biology, 2007-08-23)Gene duplication occurs when a mutation leads to the copying of a region of DNA that contains a functional gene. After duplication, there will be two copies of the gene in the genome. Gene duplication can have deleterious ... -
Use Of Temperature Sensitive Mutants To Map Reovirus Induced Oncolysis
(Biology, 2007-08-23)Reovirus is known to establish persistent infections in normal cells while selectively destroying transformed cells. Individual viruses from each of the ten groups of Reovirus is known to establish persistent infections ... -
Geographic Variation In The Morphometrics Of Emydoide blandingii
(Biology, 2007-08-23)Morphometric measurements were taken from museum specimens Emydoidea blandingii. Samples were taken from Michigan, Wisconsin, Illinois, Iowa, Nebraska, New York and Minnesota as well as from Ontario, Canada. Populations ... -
Identifying Individual Eurasian Otters (Lutra lutra) Based On Measurements Of Their Footprints Standardization Of The Method And Its Potential For Censusing And Monitoring Wild Otter Populations
(Biology, 2007-08-23)A method for identifying individual Eurasian otters (Lutra lutra L.) from measurements of their footprints was first tested by performing experiments with captive animals. Digital photographs were taken of imprints in mud ... -
Comparison Of The Ingestion And Digestion Rates Of Ochromonas danica Grazing On Pseudomonas fluorescens Of Varying Food Quality
(Biology, 2007-08-23)Flagellate prey selection appears to depend on morphological characteristics of prey such as cell size and motility, as well as on physiochemical characteristics such as digestibility and cell surface characteristics. ... -
Anti-viral Capacity Of Quillaja Saponaria Molina Extract Against Vaccinia And Herpes simplex Virus-1
(Biology, 2007-08-23)It is well known that Quillaja saponins have the ability to elicit a strong immune response when used as an adjuvant in an ISCOM matrix. However, to date, the antiviral capability of Quillaja saponins has not been documented. ... -
Does An Exotic Invasive Grass Facilitate The Invasion Of A Woody Species Into Remnant Prairies?: A Study of The Native, Prosopis glandulosa And the Alien, Sorghum halapense
(Biology, 2007-08-23)The native tree, Prosopis glandulosa, and the exotic grass, Sorghum halepense, have been invading native prairies in the Southwest U.S. since the 1800s. My objectives were to determine if S. halepense was driving shifts ... -
Feasibility For Utilization Of A Freshwater Pulmonate Snail, Physa acuta, As A Model Organism For Environmental Toxicity Testing, With Special Reference To Cadmium Ion Toxicity
(Biology, 2007-08-23)The benefits of developing the pond snail, Physa acuta, as a model species for testing acute and chronic toxicity of aquatic pollutants include its wide North American distribution, ease of field collection and laboratory ... -
Population Genetics, Systematics, Biogeography, And Evolution Of The Southeastern Central Texas Eurycea Clade blepsimolge (Plethodontidae)
(Biology, 2007-08-23)The central Texas Eurycea are a diverse group of perennibranchiate salamanders which inhabit the Edwards Plateau. Although several studies have addressed the systematics and taxonomy of this group, little is known about ... -
Reproductive Behaviors Of Two Congeneric, Sympatric Jumping Spiders: Gene Flow Barriers And Polyandry
(Biology, 2007-08-23)This two part study compares aspects of jumping spider reproductive behavior and their implications 1) as gene flow barriers during the process of speciation and 2) in the occurrence of polyandry. Courtship behaviors of ... -
Use Of Reovirus Monoreassortants To Define Lysis Of Transfomed Cells
(Biology, 2007-08-23)Reovirus is known to selectively destroy transformed cells while establishing a persistent infection in normal cells. For this study the transformed cell lines used were L929, WI-38 VA13 2RA, T1, N1, and MYC-3. Additionally, ... -
Population Genetics Of Phanaeus vindex And P. difformis And Congruence With Morphology Across A Geographic Zone Of Species Overlap
(Biology, 2007-08-23)Amplified Fragment Length Polymorphisms (AFLPs) reveal that the rainbow scarabs Phanaeus vindex (MacLeay) and Phanaeus difformis (LeConte) are distinct evolutionary units which occur in sympatry at the Fort Worth Nature ... -
Environmental, Genetic, And Maternal Effects On Life-history Traits Of The Striped Ground Cricket, Allonemobius socius
(Biology, 2007-08-23)Organismal fitness is affected by environmental and genetic factors. More importantly, an interaction between an individual's genotype and current environmental conditions influences the success of that individual in its ... -
Proximate And Ultimate Mechanisms Associated With Female Secondary Coloration In The Mexican Boulder Spiny Lizard, (Sceloporus pyrocephalus)
(Biology, 2007-08-23)Secondary sexual coloration is thought to be the result of runaway selection for signals that honestly communicate relative fitness. Much theoretical work suggests sexual selection has driven conspicuous secondary traits ... -
The Eggshell Structures Of Ringed Turtle - Doves (Streptopelia risoria)
(Biology, 2007-08-23)The avian egg provides nutrients and protects the growing embryo from physical and microbial harm. Structures fundamental to the protection are the membrane layers, which are tightly meshed networks of collagen fibers, ... -
Differentiation Of Gene Expression In Behaviorally Isolated Black And Brown Morphs Of Drosophila elegans
(Biology, 2007-09-17)Pre-zygotic isolation has been recognized as the primary form of incipient speciation, with behavioral isolation as one of its most significant manifestations. In spite of intensive research on behavioral isolation, its ...