RSS 1.0Theses and Dissertations-Biology
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Effects of cobalt on Chromobacterium violaceum quorum signaling in the absence and presence of oxygen
(2019-05)Bacteria exist as colonial organisms, that utilize signaling system for communication. Quorum signaling is a cell-density dependent cell-to-cell bacterial communication which regulates several phenotypes such as biofilm ... -
Molecular Analysis of Haemogregarinidae in Freshwater Turtles
(2019-05)Habitat fragmentation and other environmental stressors are major factors in declines of biodiversity and can impact specific animal populations. To aid in conservation efforts, individuals from impacted populations may ... -
Bacterial community structure in soils of the oldest agronomic experiment fields in the united states, the morrow plots, and of the original tallgrass prairie
(2019-05)Diversity of soil microbial communities and their influence on plants growth are widely studied to develop and improve sustainable agricultural practices. Soil-microbe interactions are very complex to interpret given that ... -
Fossil Angiosperm Woods from the Jose Creek Member of the McRae Formation
(2019-05)The Jose Creek Member of the McRae Formation, south-central New Mexico, preserves a diverse mixed angiosperm and conifer flora of Late Campanian (76.5–72.5 Ma) age. The Jose Creek Member is of special interest because it ... -
Analysis of drivers of spring alligator hunting in Texas and policy implications
(2021-05)Human-wildlife conflict, and more specifically human-carnivore conflict is a matter of particular salience among wildlife decision-makers. As conflict between large carnivores and humans increase with habitat destruction ... -
Distribution Mapping and Niche Characterization of the Endemic African Storks
(2021-05)The endemic African storks–African Openbill Anastomus lamelligerus, Abdim’s Stork Ciconia abdimii, African Woollyneck Ciconia microscelis, Saddlebill Stork Ephippiorhynchus senegalensis, ...
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Natural Hybridization and Introgression between Berberis trifoliolata and Berberis swaseyi in the Edwards Plateau
(2021-05)Hybridization and hybrid zones can give us a means by which to discover the ecological and genomic interactions that occur between closely related species, providing an understanding of the mechanisms by which biodiversity ... -
Reproduction, Life History, and Diets of the Greenthroat Darter Etheostoma lepidum in Low-Flow and High-Flow Environments
(2021-05)The Greenthroat Darter Etheostoma lepidum (Class Actinopterygii) is a member of the Austroperca complex, along with five other darters found primarily in the Rio Grande drainage of USA and Mexico. Greenthroat Darter, ... -
Decision Modeling and Analysis of Micro-Level Alligator Management: Application and Lessons Learned
(2021-05)The need for legitimate management policies that promotes coexistence becomes critical as interactions between humans and carnivores intensify as a result of human encroachment depleting carnivore habitat and populations. ... -
Establishing patterns in vegetation associations of the Fountain Darter Etheostoma fonticola in the San Marcos and Comal rivers of Texas
(2021-05)Aquatic vegetation provides many services for aquatic habitats and fish communities. The Fountain Darter Etheostoma fonticola, found only in spring systems of the San Marcos and Comal rivers in central Texas, is ... -
Seasonal diets of the gemsbok (Oryx gazella gazella) at Mason Mountain Wildlife Management Area, Mason County, Texas
(2002-12)I investigated the seasonal diets of gemsbok antelope (Oryx gazella gazella) at Mason Mountain Wildlife Management Area using microhistological analysis of fecal pellets. Plants in 2,000 samples were identified to ... -
Megastrombilus development in Juniperus ashei (Cupressaceae)
(2004-12)Juniperus ashei Buchh. (Cupressaceae) is a common gymnospermous tree in central Texas. Its range extends from the mountains of northwestern Coahuila northeast through Texas, eastern Oklahoma, northwestern Arkansas ... -
Developmental appearance of phosphorylated intermediate filaments in nuclei of glioma and neuroblastoma cells
(2002-05)The structure and function of the proteinaceous skeleton in the nucleus of eukaryotic cells, termed the nucleoskeleton, is only vaguely known. Investigations into the role of intermediate filaments (IF) in the nucleus have ... -
The role of natural enemies in determining the relationship between gall size and emergence success of a host-specific cynipid
(2000-12)Large gall size is considered an adaptation to avoid parasitism for a number of insect gall-formers when gall size is positively correlated with emergence success and negatively correlated with the probability of parasitism. ... -
Identification and molecular characterization of two novel Arabidopsis mutants that are resistant to auxin
(2009-08)Auxin is a pivotal plant hormone that plays a major role in plant growth and development. While indole-3-acetic acid (IAA) is the major natural auxin found in plants, there are many synthetic chemicals with auxinic ...
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Using motion-triggered cameras to estimate habitat use by collared peccaries
(2004-12)Motion-triggered cameras (MTC) are used in a variety of wildlife research applications; however, few studies outline how to use MTC to collect reliable data on habitat use. Herein I outline how to use MTC for collecting ... -
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Male mate choice in relation to female size in the sailfin molly, Poecilia latipinna
(2007-08)No abstract prepared. -
Testing reintroduction potential of Abronia macrocarpa (Nyctaginaceae)
(2007-12)This study tests reintroduction as a mechanism to assist in recovery of Abronia macrocarpa, a federally and state endangered plant endemic to Texas. A series of laboratory tests were conducted to determine the most ... -
Carbachol-induced pigment granule dispersion
(2000-12)The retinal pigment epithelium (RPE) is a monolayer of pigmented, simple cuboidal epithelium with long apical processes that interdigitate with photoreceptors. In teleosts, the RPE aids in light adaptation through pigment ...
