• Females with Phalli: The Effects of Low Doses of a Commonly Used Cattle Growth Promoter on Development in a Turtle with Temperature-Dependent Sex Determination 

  Byerly, Christina R. (2005-05)

  Trenbolone acetate is a synthetic androgenic growth promoter used in conjunction with other steroidogenic compounds in the majority of beef cattle raised in the United States. It has been shown to disrupt normal reproductive ...
• Spatial and Temporal Variation of Centrocestus formosanus in River Water and Endangered Fountain Darters (Etheostoma fonticola) in the Comal River, Texas 

  Cantu, Valentin (2003-12)

  Spatial and temporal variations are commonly observed in parasite populations. However, factors that regulate these variations remain unclear. Temperature has been considered an important factor influencing variations ...
• Hypersensitive Response in Live Oak: Characterization and Efficacy Against a Host of Specific Gall-Forming Wasp 

  Campbell, Cristina M. (2010-12)

  The establishment and spread of host-plant-specific pathogens and insect herbivores are fundamentally affected by plant defenses. Hypersensitive response (HR) is a plant defense classically recognized as resulting from ...
• The Relative Importance of Heterotrophic Bacteria to Pelagic Ecosystem Dynamics Varies with Trophic State of Reservoirs 

  Caston, Charles Bradford (2008-08)

  Previous research in pelagic ecosystems suggests that nutrient sequestration and carbon flow through heterotrophic bacteria is relatively high in oligotrophic systems but decreases as trophic state increases. I assessed ...
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  The Use of 23S Ribotyping to Detect Harmful and Nuisance Phytoplankton in a Large, Subtropical Reservoir During an Extended Drought Period 

  Gamez, Tatiana (2018-12)

  Inland subtropical water bodies are highly susceptible to freshwater harmful algal blooms (HABs). Still, there remains a lack of studies on this subject and the conditions encouraging blooms in this climate. Central Texas, ...
• Lower Rio Grande Valley Freshwater Turtle Populations: Three Decades of Change 

  Brown, Donald J. (2008-12)

  Substantial commercial harvesting of wild freshwater turtles has occurred in the lower Rio Grande Valley of Texas since the 1990s. State regulations were created in 2007 to eHminate turtle harvesting in public waters, ...
• Seasonal Diets and Foraging Selectivity of White-tailed Deer in the Rolling Plains Ecological Region of Texas 

  Burke, Kyle M. (2003-05)

  The Rolling Plains is the largest ecological region in Texas with 41 % classified as habitat for white-tailed deer (Odocoileus virginianus). A study of the seasonal food habits of white-tailed deer within the Rolling ...
• Consequences of Variation in Dietary Protein on Captive-raised Black Knob Map Turtles (Graptemys nigrinoda, emydidae) 

  Burpo, Nicole (2004-12)

  Many turtle species are threatened with extinction worldwide. Because of their slow maturation rates, low juvenile survivorship and slow population recovery status, more aggressive conservation tools including captive ...
• Effects of Seasonal Burns on Avian Foraging in a Central Texas Ashe Juniper-Live Oak Savanna 

  Brown, Macy (2009-05)

  North American grassland birds have been declining for the past three decades. Loss of habitat from urbanization, agricultural land use, and encroachment of woody species may account for this decline. Prescribed burning ...
• The Effects of Spring Flow on the Abundance of Heterophyid Cercariae in the Comal River, New Braunfels, TX 

  Bolick, Anne E. (2007-12)

  No abstract prepared.
• Effects of N-acyl-L-homoserine Lactone Lactonase on Disruption of Preformed Biofilms, Bacterial Recruitment, and Prevention of Biofilms 

  Boswell, William T. (2007-12)

  Biofouling is the accumulation of biofilms on inanimate surfaces in aqueous environments. Biofouling can produce economic as well as medicinal consequences such as decreased flow efficiency of chemicals through pipes, ...
• Breeding and Nesting Behavior and Habitat of the Red-billed Pigeon (Columbia flavirostris) Along the Rio Grande River in Texas 

  Breeden, Jeffrey B. (2002-05)

  The Red-billed Pigeon (Columbaflavirostris) is a, declining species in Texas along the Rio Grande River. The main cause for decline in Texas is probably habitat loss due to agricultural and urban expansion. Whil~ once ...
• Pollinator Effectiveness, Pollinator Importance, and Pollen Dispersal in Star Cactus (Astrophytum asterias) 

  Blair, Andrew W. (2007-12)

  Star cactus (Astrophytum asterias) is a federally endangered plant and from known records is restricted to a single south Texas county and a small number of sites in northeastern Mexico. Star cactus is an obligate ...
• Habitat Characterization and Pilot Reintroduction of Star Cactus (Astrophytum asterias) 

  Birnbaum, Sandra J. (2009-08)

  Astrophytum asterias is federally listed as endangered and in the United States is found only in Starr County, Texas. The species has a priority ranking of 2 by the United States Fish & Wildlife Service which means ...
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  A Morphological and Molecular Reassessment of Robergea albicedrae (Ascomycota) 

  Bernardin, Jessica Rae (2019-12)

  Historically, ascomycete fungi have been classified based on key morphological characteristics such as spore size and shape, ascus morphology, and biochemical indicators. This approach has resulted in groups of organisms ...
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  A Statistically Designed Karst Feature Survey, and Factors Controlling Karst Feature Density and Distribution 

  Martinez, Lorena (2019-12)

  Karst feature inventories provide essential information used to evaluate a site’s degree of hydrogeologic connectivity to local and regional flow systems, as well as its environmental and ecological sensitivity. For ...

• Aspects of Laboratory Culturing of Larvae of the Freshwater Shrimps, Macrobrachium, of the Guadalupe River 

  Beisser, Stephen M. (1975-08)

  No abstract prepared.
• Spatial and Temporal Patterns in the Fish Assemblage of the Blanco River, Texas, and Reproductive Ecology and Diet of the Gray Redhorse, Moxostoma congestum 

  Bean, Preston T. (2006-12)

  No abstract prepared.
• A Heat Budget for Canyon Reservoir, A Subtropical Impoundment in Southcentral Texas 

  Bass, David A. (2000-12)

  Annual heat budgets were constructed for a subtropical (30°N) reservoir over its 31-year history and used to examine the influence of local climatic variability on hydrological and thermal processes. Heat balances were ...
• Ethology, Social Organization, and Habitat Use of the African Ungulate, Kobus leche 

  Beaver, Tracey (2003-05)

  The specialized areas of habitat in which red lechwe, Kobus leche leche, are found in Africa are quite different than those found on Texas ranches. Environmental, social, and biological determinants mitigate the lechwes ...

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