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Vigilance in Columbian Ground Squirrels: The Effects of Kinship and Mechanisms of the Group-size Effect
(2008-09-09)
Behavioral observations of Columbian ground squirrels (Spermophilus columbianus) were made to investigate two factors that can affect vigilance: the group-size effect and the presence of kin. Vigilance was timed in over ...
Influence of Bait on Assessment of Biodiversity of Small Mammals
(2008-09-09)
Two experiments were designed to test effectiveness of bait packs containing peanut butter and rolled oats (peanut butter bait packs) compared to empty bait packs in traps used to capture small mammals. In experiment A, ...
Study of a Novel Host-Parasite Relationship: Mycoplasma gallisepticum in House Finches (Carpodacus Mexicanus)
(2008-09-09)
Although host-parasite interactions are well recognized as dynamic interactions leading to the occurrence of emerging infectious disease, we know little about how host-
parasite systems evolve. To better understand how ...
Molecular Ecology of Peromyscus polionotus
(2008-09-09)
Lowe et al. (2004) describes ecological genetics as “the investigation of the origin and maintenance of genetic variation within and between populations, which ultimately leads to adaptation and speciation.” Thus, to gain ...
Natural History and Conservation of the Eyelash Palmpitviper (Bothriechis schlegelii) in Western Panamá
(2008-09-09)
The focus of this thesis was to examine various components of the natural history,
ecology, and conservation biology of the Bothriechis schlegelii. The sections that follow
include studies of foraging ecology, demography, ...
Geographic Variation in the Yellow-throated Warbler (Dendroica dominica)
(2008-09-09)
I examined how variation within the yellow-throated warbler (Dendroica dominica) relates to geography. The yellow-throated warbler is a common neotropical migrant with a breeding range confined to the southeastern United ...
The Role of SCARECROW-LIKE 3 in Salt Tolerance During Germination and Seedling Development in Arabidopsis thaliana
(2010-07-20)
Salinity is a stress factor that results in reduced crop productivity. As much as three hectares of arable land is lost due to salinity per minute. With an increasing world population and shrinking arable land, world crop ...
Investigations of Neural Ontogeny in the Larval Oyster Crassostrea virginica and the nudibranch Berghia verrucicornis: A Histological and Immunohistochemical Approach
(2010-06-07)
Bivalves are a diverse group of molluscs that inhabit both marine and freshwater habitats. These animals play a vital role in the success of entire aquatic ecosystems by filtering the water and providing structural complexity ...
Discovery and Characterization of Novel Antibiotic Synthesis and Resistance Determinants from Diverse Microbial Metagenomes
(2010-07-09)
The application of metagenomics to investigate the genetic and functional diversity of as-yet-uncultured microorganisms from natural environments has been one of the most significant breakthroughs in molecular microbiology. ...
Condition Dependence and Status Signaling Function of Structural Coloration in the Eastern Bluebird (Sialia sialis)
(2010-11-16)
I examined the relationship between blue feather coloration, nutritional condition, and status signaling in eastern bluebirds (Sialia sialis). I quantified nutritional condition by measuring growth rates of tail feathers ...