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Effects of spatial subsidies and canopy cover on pond communities and multiple life stages in amphibians
(University of Missouri--Columbia, 2012)
Spatial subsidies are resources that move from one ecosystem to another. In aquatic systems, canopy cover determines both light availability and subsidy input in the form of senescing leaves. This phenomenon has been well ...
Molecular mechanisms of radial axonal growth : insights from analysis of neurofilament gene-targeted mice
(University of Missouri--Columbia, 2012)
For the nervous system to send signals rapidly, axons must undergo growth that expands their diameter. This process is known as radial growth and is dependent upon insulating myelin that wraps around the axon and the ...
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 ...
Topological organization of the trigeminal system in the lamprey and restoration following axonal regeneration
(University of Missouri--Columbia, 2012)
The nervous systems of lower vertebrates, such as the lamprey, share many of the basic features of the brain and spinal cord of higher vertebrates. However, unlike humans and other higher vertebrates, the lamprey displays ...
A study of reproductive toxicology
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Di(2-ethylhexyl) phthalate (DEHP) is a ubiquitous environmental contaminant. Epidemiological studies suggest that DEHP decreases masculinization of ...
Fetal exposure to low but not high doses of Bisphenol A (BPA) increases abdominal fat, impairs glucose tolerance and alters serum hormones in male mice : evidence for non-monotonic dose-response relationships
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Bisphenol A (BPA) is a ubiquitous contaminant with estrogenic and other hormonal activities. A criticism of many experimental studies is the lack of ...
Grazing lawns across Africa : a case study comparison between Kruger National Park and Serengati [sic] National Park
(University of Missouri--Columbia, 2012)
Grazing lawns are highly-utilized grassland patches that represent key resource areas for large herbivores in savanna ecosystems. Two parallel studies were conducted in Kruger National Park (KNP), South Africa and Serengeti ...
Localization of the Rf3 restorer-of-fertility gene for maize S-type cytoplasmic male sterility
(University of Missouri--Columbia, 2012)
Maize S-type cytoplasmic male sterility (CMS-S) is a maternally inherited trait that prevents pollen grains from developing to maturity. CMS-S is associated with the high levels of a novel mitochondrial transcript, ...
Neuromodulation-dependent regulation of coordinated patterns of gene expression in motor neurons of the stomatogastric ganglion
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The pyloric network of the crustacean stomatogastric ganglion (STG) is a central pattern generator that requires descending modulation for normal ongoing ...
Initial juvenile movement of pond-breeding amphibians in altered forest habitat
(University of Missouri--Columbia, 2012)
The initial juvenile movement phase represents the first stage of the multi-phase process of natal dispersal. My objective was to investigate how alterations in forest habitat quality impact initial juvenile movement success ...
The evolution of Brassica crops and wild relatives: phylogenetics, development and domestication
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The main goal of my dissertation is to understand the patterns and mechanisms underlying mustard (tribe Brassiceae, Brassicaceae) speciation in the ...
An investigation of maize B chromosome-derived minichromosomes
(University of Missouri--Columbia, 2012)
The maize (Zea mays) B chromosome is a supernumerary chromosome with a selfish inheritance characterized by nondisjunction at the second pollen mitosis, univalent survival in meiosis, and preferential fertilization of the ...
The secret lives of African forest elephants: using genetics, networks, and telemetry to understand sociality
(University of Missouri--Columbia, 2012)
Knowledge of social structure is important to understanding the overall evolution and behavioral ecology of a species as it ultimately influences spatial patterns and gene flow. This dissertation focuses on the social ...
The characterization of the tetratricopeptide repeat protein 13 in mammals
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Tetratricopeptide repeat domain protein 13 (TTC13) is a member of a large family of proteins known as tetratricopeptide repeat (TPR) proteins that has ...