Browsing by Thesis Department "Biological sciences (MU)"
Now showing items 1-20 of 240
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The abundance and diversity of stream salamanders on montane golf courses
(University of Missouri--Columbia, 2012)Stream salamanders are often the most abundant vertebrates in headwater streams and they play an integral role as both predators and prey in these ecosystems. Because they often use both terrestrial and aquatic habitat and ... -
Age effects on reproductive behavior in the treehopper umbonia crassiscornis (Hemipera: membracidae)
(University of Missouri--Columbia, 2007)In many animal species females select mates based on male age. This choice is often linked to the reproductive benefits females derive. Age-based choice is also influenced by variation in the ability of males to find and ... -
Aggressive calling in treefrogs
(University of Missouri--Columbia, 2011)Acoustic communication plays a major role in many of the social activities of frogs. A great deal is known about communication in some contexts, such as mate choice. Aggressive communication, however, has received little ... -
The Agrobacterium tumefaciens min system contributes to the regulation of cell division
(University of Missouri--Columbia, 2016)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] In A. tumefaciens, the essential FtsZ protein is located at the growth pole before shifting to the mid-cell right before division. Recruitment of FtsZ ... -
Amphibian metamorphosis and juvenile terrestrial performance following chronic cadmium exposure in the aquatic environment
(University of Missouri--Columbia, 2005)Effective amphibian conservation requires an understanding of how populations respond to specific natural and anthropogenic factors. Chemical contaminants are among the known sources of acute and chronic stress and have ... -
Analysis of cell signaling during floral abscission in arabidopsis
(University of Missouri--Columbia, 2017)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The shedding of plant organs is known as abscission. Floral abscission in Arabidopsis is regulated by two related receptor[negation symbol]-like protein ... -
Analysis of post-translational modifications of the blue light photoreceptor, phot1, by the CRL3NPH3 ubiquitin ligase complex
(University of Missouri--Columbia, 2013)Plants are sessile by nature; because of this they have evolved many strategies to cope with the diverse environmental stimuli they encounter in nature. One such strategy is the phototropic response by which plants reorient ... -
Approaches for unveiling the kinetic mechanisms of voltage gated ion channels in neurons
(University of Missouri--Columbia, 2019)Ionic currents drive cellular function within all living cells to perform highly specific tasks. For excitable cells, such as muscle and neurons, voltage-gated ion channels have finely tuned kinetics that allow the ... -
Aquatic and terrestrial exposure of amphibians to estrogenic endocrine disrupting contaminants
(University of Missouri--Columbia, 2009)Hormones play an important role in shaping growth and development. Endocrine disrupting contaminants (EDCs) come from the external environment and can mimic or block internal hormone pathways. Many amphibians begin to ... -
Assessing the effects of anticoagulant rodenticides on non-target fish species
(University of Missouri--Columbia, 2018)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Invasive rat species have negatively affected island ecosystems contributing to the decline and extinction of many endemic species. The eradication of ... -
Assessment of the microbiome associated with endangered orchids
(University of Missouri--Columbia, 2018)The Orchidaceae (orchid family) is perhaps the most speciose group of flowering plants with approximately 25,000 described species and many thousands of hybrids. While certain mycorrhizal fungi are required for orchids to ... -
Association of force plate and body-mounted inertial sensor measures for determination of hind limb lameness in horses
(University of Missouri--Columbia, 2015)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The purpose of this study was to investigate the association between inertial sensor and stationary force plate measures of hind limb lameness. 21 ... -
Atypical localization of Eph-RTKs in childhood cancer rhabdomyosarcoma
(University of Missouri--Columbia, 2019)Rhabdomyosarcoma (RMS), the most common soft tissue tumor in children, is an aggressive cancer with a 5-year survival rate of 24% if it has metastasized. Current treatment options are limited to surgery, chemotherapy and ... -
Bat avoidance in the katydid genus Neoconocephalus
(University of Missouri--Columbia, 2010)The hearing system of the katydid genus Neoconocephalus has two functions: intraspecific communication and predator (bat) avoidance. Male calls and bat cries differ spectrally and temporally. Katydids must recognize and ... -
Behavioral choice and demographic consequences of wood frog habitat selection in response to land use
(University of Missouri--Columbia, 2007)Land use is a pervasive form of disturbance affecting natural systems on Earth. My dissertation research is set within the context of a large scale project referred to as Land-use Effects on Amphibian Populations (LEAP), ... -
Behavioral consequences of polyploidy in hyla chrysoscelis treefrogs : implications for speciation and underlying mechanisms
(University of Missouri--Columbia, 2015)Polyploidy occurs when organisms have more than the typical two copies chromosome sets. Polyploidy has occurred many times throughout plant and vertebrate evolution, and recently in diverse families of frogs. Male treefrogs ... -
Behavioral endocrinology of female gray treefrogs, Hyla versicolor, in response to acoustic stimulation
(University of Missouri--Columbia, 2008)Particularly in organisms with a limited breeding period, females must rely on both external and physiological cues to regulate the phenology of reproduction and behavior. I investigated the relationship between male ... -
Beyond the edge : riparian habitat use and forest management effects on stream salamanders in the southern Appalachian mountains
(University of Missouri--Columbia, 2007)While there are many types of habitat loss and degradation (e.g., agriculture, land development), many studies have focused on the impacts of logging on wildlife populations and on ecosystem processes. Little information, ... -
The biology of the Florida scrub endemic millipede: Floridobolus penneri
(University of Missouri--Columbia, 2006)Even though millipedes provide a number of important ecosystem services, the group overall is understudied and nowadays largely ignored in the USA. Most millipedes that are well-studied occur in temperate, mesic environments, ... -
Bisphenol A (BPA) in human serum and urine : exposure via dermal absorption from thermal paper receipts and oral ingestion after transfer from hand to food
(University of Missouri--Columbia, 2013)Bisphenol A (BPA) exposure is thought to be mainly due to absorption from the gut by oral ingestion. However thermal receipt paper represents another potential source of BPA exposure via direct absorption through the skin ...