Index Catalog // ScholarsArchive@OSU

Multiple stressors and amphibian population declines

Creator:: Hatch, Audrey C.
Abstract:: In the past decade, declines in amphibian populations have captured scientific and popular interest. The causes of the declines are likely to be complex and involve interactions between several environmental stressors. Using multifactorial experiments, I investigated the combined effects of several anthropogenic stressors on developing amphibians in Oregon, USA. In...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Audrey C. Hatch for the

The ecology of Lepidurus apus in northern Utah and some limnological requirements for hatching

Creator:: Braswell, Audrey Lee Jr
Abstract:: A survey of the major bodies of water, temporary and perennial, in the region of Northern Utah revealed a limited distribution of the Notostraca. Lepidurus (Linn.), the only representative found, was restricted to a single temporary shallow lake. Dry Lake, in the southern end of Cache County. Dry Lake occupies...
Resource Type:: Dissertation
Full Text:: limnological requirements for hatching Redacted for Privacy AN ABSTRACT OF THE THESIS OF Audrey Lee

Indirect effects of ultraviolet-B radiation on larval amphibians as mediated by food quality and trophic interactions

Creator:: Scheessele, Erin A.
Abstract:: Ultraviolet-B radiation (UVB) is an abiotic stressor in both terrestrial and aquatic systems. The stratospheric ozone layer, depleted due to anthropogenic activities and the cause of elevated UVB at earth's surface over the last four decades, is predicted to recover by 2065. However, UVB levels in aquatic systems may continue...
Resource Type:: Dissertation
Full Text:: . Growth and development of R. cascadae did not differ between a UVB-exposed and UVB-shielded diet, but P

Suppression of yolk polypeptide gene expression in Drosophila melanogaster by sodium butyrate treatment

Creator:: Fairfax, Carolyn S.
Abstract:: Current evidence suggests that temporal regulation of gene expression in eucaryotic organisms relies primarily upon localized structural modifications of chromatin. One possible means of changing chromatin structure is through varying the level of acetylation of the histone proteins. Sodium butyrate has been found to inhibit the activity of histone deacetylase...
Resource Type:: Masters Thesis
Full Text:: from opposite strands in opposite directions (Barnett et al., 1980, Riddell et al., 1981). The

Cannibalism in larvae of the long-toed salamander, Ambystoma macrodactylum

Creator:: Wildy, Erica Lynn
Abstract:: Predator-prey interactions have historically been studied to explain patterns of organization observed in populations and communities. They have also been important in understanding the evolution of antipredator responses in prey and counterstrategies in predators. Despite the breadth of knowledge that exists for heterospecific interactions, relatively few studies have investigated the...
Resource Type:: Dissertation
Full Text:: , Lisa Belden, Audrey Hatch and Jill DeVito. In addition to our scientific discussions, I have enjoyed

Epithelial ultrastructure in the vas deferens of the sow bug, Porcellio scaber (Latreille)

Creator:: Newstead, James Duncan MacInnes
Resource Type:: Dissertation
Full Text:: reference to the ultrastructure of the giant cells described by Radu (52, p. 1 -14). Although the

The effects of multiple pathogens on amphibians in the Pacific Northwest

Creator:: Romansic, John M.
Abstract:: The earth is undergoing a “biodiversity crisis” characterized by loss of populations, species, genetic diversity, and ecosystem services. Part of this crisis consists of population declines, extinctions, and increased incidence of deformities in amphibians. It is unknown whether deformities contribute to these declines. Many cases of population declines in amphibians...
Resource Type:: Dissertation
Full Text:: , including Mario Ambrosino, Audrey Hatch, Phil Heneghan, Jen Gervais, Chris Beatty, and Wendy Walker, who

Thermal ecology of the garter snakes Thamnophis sirtalis concinnus (Hallowell) and Thamnophis ordinoides (Baird & Girard)

Creator:: Stewart, Glenn R.
Abstract:: In recent years, studies dealing with temperature regulation, temperature sensitivity, and physiological responses to temperature in lizards and other reptiles have increased tremendously. It is notable that snakes have been largely ignored in such studies. This no doubt is due to their less direct relationship to ancestral endotherms. However, problems...
Resource Type:: Dissertation
Full Text:: Stebbins (87, p. 505, 507) and Wright and Wright (100, p. 756, 834). Figure 1, Habitat of Thamnophis

Early events in hydrocortisone induced glutamine synthetase activity in differentiating chick neural retina

Creator:: Hull, Shirley Anne
Abstract:: Glutamine synthetase in the embryonic chick neural retina shows a 50 fold increase in activity between the 16th and 17th day of embryonic development. This increase in enzyme activity results from de novo enzyme synthesis thus making it a useful marker of differential gene expression. A precocious rise in activity...
Resource Type:: Dissertation
Full Text:: expressed in p,mole hr-1 mg protein-1. Vertical lines represent ± standard error. 26 7x 10-9- 7x 10-8 7x

Reproductive biology and behavior of the brown tree snake (Boiga irregularis) on Guam.

Creator:: Waye, Heather L.
Abstract:: While there are many more species of reptiles in the tropics than in temperate latitudes, relatively little is known about the natural history of tropical species of snakes. Even basic information, such as reproductive ecology and behavior, is lacking. Patterns of reproduction in tropical species differ from patterns in temperate...
Resource Type:: Dissertation
Full Text:: Kennedy, Lisa Belden, and Audrey Hatch. It has been a real pleasure to know them and I couldn’t have

ScholarsArchive@OSU

Multiple stressors and amphibian population declines

The ecology of Lepidurus apus in northern Utah and some limnological requirements for hatching

Indirect effects of ultraviolet-B radiation on larval amphibians as mediated by food quality and trophic interactions

Suppression of yolk polypeptide gene expression in Drosophila melanogaster by sodium butyrate treatment

Cannibalism in larvae of the long-toed salamander, Ambystoma macrodactylum

Epithelial ultrastructure in the vas deferens of the sow bug, Porcellio scaber (Latreille)

The effects of multiple pathogens on amphibians in the Pacific Northwest

Thermal ecology of the garter snakes Thamnophis sirtalis concinnus (Hallowell) and Thamnophis ordinoides (Baird & Girard)

Early events in hydrocortisone induced glutamine synthetase activity in differentiating chick neural retina

Reproductive biology and behavior of the brown tree snake (Boiga irregularis) on Guam.

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