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Methodological approaches for sound training in underepresented learners: a case study with american toads (Anaxyrus americanus)
(University of Missouri--Columbia, 2021)
efforts to better understand the minds of animals have been flourishing, with methodological breakthroughs and a remarkable increase in the number of publications dealing with a wide variety of non-model species. The growing interest in species...
Periconceptional, gestational, and lactational exposure to unconventional oil and gas chemical mixture alters energy expenditure in adult female mice
(University of Missouri--Columbia, 2018)
health outcomes related to activity in humans and animals exposed to UOG chemicals....
Examination of exogenous estrogenic chemical exposure and altered fetal nutrition in the CD-1 mouse fetus
(University of Missouri--Columbia, 2009)
My dissertation examines two issues related to disruption of fetal growth: exposure to exogenous estrogenic chemicals and altered nutrition. My first set of studies was aimed at manipulating isoflavones in feed on serum ...
Characterizing territoriality and the mechanisms that mediate it in female Anolis gundlachi lizards
(University of Missouri--Columbia, 2019)
Territoriality is a suite of behaviors through which animals secure access to particular areas or resources. It is prevalent across animal groups and has the potential to exert substantial influence on fitness by mediating how individuals...
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 solicit matings from females...
The effects of axotomy on the biophysical properties of reticulospinal neurons in larval lamprey
(University of Missouri--Columbia, 2006)
Following severe spinal cord injury (SCI), in adult higher vertebrates there is little or no axonal regeneration, and animals remain paralyzed below the lesion. In contrast, lower vertebrates such as the lamprey, following SCI, descending brain...
Intervertebral discs : metabolic responses to load, injury, and pro-inflammatory stimulation
(University of Missouri--Columbia, 2020)
Introduction: Intervertebral disc (IVD) degeneration is a significant cause of back pain and disability. Factors such as trauma and magnitude and frequency of loading are associated with IVD degeneration. However, the ...
Developmental programming by xenoestrogens
(University of Missouri--Columbia, 2011)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Xenoestrogens (XE) are chemicals in the environment that mimic the body's natural steroidal estrogens. Developmental exposure to XE may interfere with ...
The biology of the Florida scrub endemic millipede: Floridobolus penneri
(University of Missouri--Columbia, 2006)
be found to one degree or another in most habitats around the world. I report on several laboratory and field tests designed to learn about the ecology and life history of the large millipede, Floridobolus penneri that is endemic to native scrub only...
Impact of selective motor neuron death on hypoglossal motor neuron survival and tongue morphology in a novel model of dysphagia
(University of Missouri--Columbia, 2019)
with reduced quality of life and increased mortality secondary to malnutrition, dehydration, and aspiration pneumonia. Despite the severity of the problem, dysphagia has seldom been studied in animal models of ALS. Current models are challenging to analyze...
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 ...
Plasticity of neurons in mouse major pelvic ganglia in response to loos of physiological input in cases of nerve injury and spinal cord injury
(University of Missouri--Columbia, 2018)
Autonomic dysfunctions present significant effects on day to day functions of spinal cord-injured patients. Most people with spinal cord injury (SCI) reported a desire to recover autonomic functions such as bladder and sexual functions over...
Evolution of signal frequency in Neoconocephalus (Orthoptera: Tettigoniidae) : a study of perceptual and environmental sources of selection
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Mate-attraction signals offer an ideal opportunity to examine the sources of selection that shape traits and trait diversity, as they are very diverse ...
Mechanisms of call recognition in three sympatric species of Neoconocephalus (Orthoptera: Tettigoniidae) : asymmetrical interactions and evolutionary implications
(University of Missouri--Columbia, 2006)
character displacement. Empirical studies of reproductive character displacement often report that the interactions between species are asymmetrical, such that one species shows the expected pattern of displacement while the other does not. This may be a...
The role of terrrestrial habitat in the population dynamics and conservation of pond-breeding amphibians
(University of Missouri--Columbia, 2007)
I used both demographic modeling and experimental field research to evaluate the role of terrestrial habitat in the population dynamics and conservation of pond-breeding amphibians. I began by using literature data to ...
Neuroscience tools in novel contexts: developing thermogenetics in Drosophila and decoding autonomic activity in mouse major pelvic ganglion
(University of Missouri--Columbia, 2022)
Animal research models provide the opportunity to decode neural activity via the ability to precisely stimulate and record neural events associated with quantifiable circuit and behavioral outputs (Bernstein et al., 2012; Boyden et al., 2005...
Multi-scale investigations of gray treefrong movements: patterns of migration, dispersal, and gene flow
(University of Missouri--Columbia, 2005)
The movement of individuals within and among populations has been recognized as an important determinant of the persistence of species. Fragmentation of terrestrial landscapes has exacerbated the need to understand the ...
Genome-wide exploration of direct GBX2 target genes and their contributions to mouse development
(University of Missouri--Columbia, 2013)
and craniofacial phenotypes observed in Gbx2 mutants are reminiscent of defects reported in individuals with the congenital disease DiGeorge syndrome. Interestingly, GBX2 target genes ROBO1 and NRP1 are involved with NC cell migration. In mice, loss of Robo1 or Nrp...
Interactions between neuroanatomy, cognition, and ecology in Anolis lizards
(University of Missouri--Columbia, 2021)
, particularly outside of birds and mammals. In natural environments, cognition likely impacts organism fitness. Behavioral flexibility, which enables an animal to modulate its behavior to match its environment, may facilitate success in novel habitats...
Genetic analysis of Amanitin resistance in the Nematode Caenorhabditis Elegans
(University of Missouri--Columbia, 1987)
Mutants resistant to oc-amanitin, a fungal toxin that interferes with messenger RNA production by binding to RNA polymerase II, make possible genetic analyses of RNA polymerase II function. The work reported here involves studies of amanitin...