Browsing Department of Biology by Title
Now showing items 38-57 of 195
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DEVELOPMENT OF NEW TECHNIQUES TO DISSECT THE GENETIC BASIS OF POPULATION-LEVEL VARIATION OF RECOMBINATION RATES IN THE DAPHNIA MODEL SYSTEM
(2021-12-20)We know very little about the determining genetic factors that control the recombination events within a genome. Moreover, the cause of recombination rate variation in population-level remains poorly understood, especially ... -
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 ... -
Disease in a Changing Ocean: Ecoimmunological Approaches to Coral Reef Ecology
(2018-04-26)Increasing prevalence of anthropogenic stressors and climate change have resulted in rapid increases in the incidence and severity marine disease affecting a number of vulnerable taxa. Cnidarians, including both reef-building ... -
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 ... -
DIVERSIFICATION ON CONTINENTS AND ISLANDS: A HERPETOLOGICAL PERSPECTIVE
This dissertation seeks to understand the geological and climatological processes that have promoted diversification on continental and island systems. Using molecular genetic data generated using Sanger sequencing and ... -
Diversity And Community Organization In The Periphyton Of Recirculating Streams Channels Are Defined By Current Velocity And Nutrient Supply
(Biology, 2010-03-03)In a series of experiments taking place in recirculating artificial stream channels, periphyton communities growing on ceramic tiles were subjected to variations in current velocity and nutrient supply. The first experiment ... -
Diversity of the Fanged-Frog Complex, Limnonectes kuhlii (Anura: Dicroglossidae) on the Mountainous Regions of Java and Sumatra, Indonesia
(2021-12-21)The cryptic species complex, Limnonectes kuhlii, previously was considered to have a large range across Southeast Asia. Recent works have started to identify species within the complex using primarily genetic methodologies. ... -
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 ... -
Domestication of PIF transposable elements transposases as regulatory proteins in Drosophila melanogaster
(2018-08-23)Transposable elements (TEs) are genetic units that are able to move and amplify within a host genome. As a result of their activities, TE insertions can cause disruptions of gene functions and ectopic recombination producing ... -
Ecological Genetics Of Adaptive Life-history Phenotypes In The Cricket Allonemobius socius
(Biology, 2009-09-16)As many organisms inhabit unstable environments, the ability to respond to changing environmental conditions is highly adaptive, and results in the evolution of phenotypic plasticity. Thus, identifying the genetic basis ... -
Ecomorphology Of The Mexican Fence Lizards Of The Sceloporus Formosus Group (Squamata: Phrynosomatidae)
(Biology, 2009-09-16)A central belief of ecomorphological studies is the link between morphology and performance, but, surprisingly few analyses demonstrate this relationship. Fence lizards of the genus Sceloporus offer a useful system for ... -
EFFECTS OF A N2-FIXING BIOFERTILIZER ON THE RHIZOSPHERE MICROBIOME AND THE INFLUENCE OF BIOCHAR ON SOIL FERTILITY AND MICROBIAL COMMUNITIES
(2021-12-20)The rhizosphere microbiota and endosymbionts are the major contributors to biogeochemical cycling and significantly impact the associated host plant. Their association with plant roots is inevitable for plant health and ... -
The Effects Of An Artifically Elevated Thermal Environment And Seasonal Acclimatization On The Thermal Tolerance Of The Western Mosquitofish, Gambusia affinis
(Biology, 2008-09-17)Gambusia affinis, the western mosquitofish, is a very hardy, live-bearing fish that has invaded freshwater habitats worldwide. The success of the western mosquitofishs' invasion is due to its reproductive capabilities and ... -
The Effects Of Mine Land Reclamation Of Herpetofaunal Communities
(Biology, 2012-07-25)Succession describes the process of community change over time after a disturbance. Understanding these processes allows ecological restoration projects to take advantage of natural community trajectories. Reclamation ... -
Effects Of Nutrient Limitation, Competitors And Grazers On The Abundance And Toxicity Of Laboratory Cultures Of P. parvum, a Harmful Alga
(Biology, 2008-08-08)P. parvum Carter is a haptophyte that occurs world wide in both fresh and brackish waters. Though P. parvum blooms occur world wide under a variety of environmental conditions, it occurs during the cooler months of the ... -
EFFECTS OF pH SHOCK AND HEAT STRESS ON THE GROWTH OF NITROGEN-FIXING BACTERIA AND THEIR PHOSPHATE SOLUBILIZATION
(2021-05-11)Rhizobia are well known for their ability to fix atmospheric nitrogen (N) into ammonia, so called biological nitrogen fixation (BNF), either as free-living bacteria in soil or as symbiotic partners of legume plants. ... -
Effects Of The Exotic Invader, Tamarix spp., On Aspects Of The Aquatic Ecosystem At McComb Creek, Presidio County, Texas
(Biology, 2010-07-19)The effects of saltcedar, Tamarix spp., invasion in riparian zones of the western United States have been well documented. These include, but are not limited to soil salinization, and shifts in hydrology and water use. ... -
EFFICACY OF A SERIES OF ORGANOMETALLIC POLYMERS AS ANTI-CANCER AND ANTIVIRAL AGENTS
(2017-08-18)Organometallic compounds, particularly organotin compounds, have been known to possess biological activity for over 80 years. A variety of these compounds have demonstrated antimicrobial, anti-cancer, and antiviral activities. ... -
Efficacy Of A Series Of Organotin Polymers As Anticancer And Antiviral Drugs
(Biology, 2008-04-22)Anticancer drugs have been shown to have antiviral abilities as well. The two types of diseases are similar in that they hold the cell in a continued growth phase. Therefore, if a drug has anticancer activity, it could ... -
Efficacy Of Selected Natural And Synthetic Novel Organic Compounds In Prevention Of Zebra Mussel (Dreissena Polymorpha) Macrofouling By Byssal Attachment Inhibition
(Biology, 2007-10-08)The invasive, freshwater, bivalve, Dreissena polymorpha (zebra mussel) was introduced to North America in the Great lakes in 1986 and has since spread throughout the waterway of the eastern and central United States and ...