Browsing Department of Biology by Title
Now showing items 132-151 of 195
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Plant Immune Defenses Against The Human Pathogens Escherichia coli O157:H7 And Salmonella enterica
Several pathogenic and non-pathogenic microorganisms reside on plant leaf surfaces while bacteria being the most abundant of them all. Often bacteria not only use the plant leaf surface as their habitat but also penetrate ... -
Population and reproductive dynamics of zebra mussels (Dreissena polymorpha) in Texas reservoirs: Predicting the sustainability of zebra mussel populations in warmer waters
(2020-05-28)Zebra mussels (Dreissena polymorpha) are highly invasive freshwater bivalve mollusks, introduced to the United Sates in the late 1980’s, and known for forming dense colonies that can encrust boat hulls and motors, damage ... -
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 ... -
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 ... -
POPULATION GENOMICS AND CONSERVATION OF TEXAS CAVE AND SPRING SALAMANDERS (PLETHODONTIDAE: EURYCEA)
(2020-08-18)Understanding species boundaries and gene flow among the cave and spring salamanders of the central Texas region (genus Eurycea) has been a challenge for many decades. Although previous research has greatly increased our ... -
Proteasomal Gene Duplications And Recruitment Of Testis Specific Expression In Drosophila
(Biology, 2008-09-17)Proteasome is a large multisubunit complex that degrades ubiquitinated proteins in a highly regulated manner in all eukaryotes. Two subcompartments of this subunit are the 19Scap and the 20S core particle with 19S acting ... -
PROTEIN/NUCLEIC-ACID STRUCTURE AND SEQUENCE REQUIREMENTS FOR SPECIFYING SECOND-STRAND CLEAVAGE AND SECOND-STRAND SYNTHESIS DURING THE INTEGRATION OF THE SITE-SPECIFIC LINE R2Bm
(2017-08-09)Long interspersed nucleotide elements (LINEs) are major drivers of genomic landscaping events in many eukaryotic genomes. LINEs encode a multifunctional protein that binds to their own mRNA, recognize and cleave target ... -
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 ... -
Proximate Behavioral And Morphological Mechanisms That May Mediate Intraguild Predation Stability In The Anisoptera
Intraguild Predation (IGP) is a form of interference competition characterized by an intraguild predator consuming interspecific competitors, the intraguild prey. This interaction is extremely common in nature, but ... -
Rate Of Diversification In Crickets (Orthoptera: Ensifera) And A Possible Role Of F Supergroup Wolbachia In Bush Crickets
(Biology, 2007-09-17)Part I: Rates of speciation can tell us more than how many species have survived over a period of time. They indicate whether there are some characteristics of organisms or biogeography scenarios facilitate or hinder ... -
Rattlesnake genomics illustrate patterns of speciation, adaptation, and links between genome structure and function
(2019-08-13)Understanding the origins of species and biological novelties that allow them to thrive in diverse environments is a key goal in evolutionary biology, and new genomic methods are constantly enabling research using non-model ... -
Rcd-1 Related:a Positively Selected Retrogene With Spermatogenesis Function In Drosophila
(Biology, 2008-04-22)Gene duplication is one of the major forces in driving genome evolution. Our study focuses on a particular retrogene Rcd-1 related (Rcd-1r) that originated through retroposition of the parental gene Required for cell ... -
The Relationship Of Oribatid Soil Mite Abundance To Abiotic And Biotic Factors
(Biology, 2008-08-08)Oribatid soil mites primarily feed on fungi and dead organisms. They belong to the arthropod subclass, Acari, that are believed to contribute to soil processes such as plant litter breakdown and nutrient release. In order ... -
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 ... -
Reproductive Isolation In Drosophila: From Behavior To Genome
(Biology, 2010-11-01)In this study, I investigate factors underlying reproductive isolation in Drosophila. I begin (Part I) by measuring behavioral isolation between Zimbabwe and cosmopolitan D. melanogaster, and asking the following questions: ... -
RESPONSE OF MICROBIAL NETWORKS AND MICROBIOMES TO THE FOREST-TO-PASTURE CONVERSION IN AMAZON SOILS
(2016-11-30)The Amazon rainforest is the largest tropical rainforest ecosystem in the world, and an extremely important region ecologically. Due to the growing human needs mainly for cattle ranching and cultivation, the rainforest has ... -
The Role Of Life History In The Toxicity Of The Toxic Golden Haptophyte Prymnesium parvum
(Biology, 2013-03-20)Prymnesium parvum is a harmful algal species that causes widespread fish kills. It is usually motile, but non-motile stages have been observed that may represent an encysted stage. The relationship of these life history ... -
Role Of Repetitive DNA In Apicomplexan Genome Evolution
(Biology, 2010-07-19)The Apicomplexa represent a phylum of obligate intracellular parasites that impart significant medical, veterinary, and socioeconomic burdens worldwide. The opportunistic, AIDS-associated, pathogen Toxoplasma gondii for ... -
Role Of The Extracytoplasmic Function Sigma Factor carQ In Oxidative Response Of Bradyrhizobium japonicum
(Biology, 2013-10-23)Bradyrhizobium japonicum is a nitrogen-fixing bacterium that can establish a symbiotic relationship with the soybean plant. To be a successful symbiont, B. japonicum must have an effective mechanism to deal with plant ... -
Saponins As Agents Preventing Infection Caused By Waterborne Pathogens
(Biology, 2013-10-23)Waterborne diseases are the leading cause of deaths globally, estimated to result in more than 3.4 million deaths and approximately 4 billion cases of diarrhea annually according to the World Health Organization (WHO). The ...