Index Catalog // ScholarsArchive@OSU

Ecological aspects of kin discriminating behavior with implications of functional value

Creator:: Hokit, D. Grant
Abstract:: To assess the context dependence of kin discriminating behavior, I examined kin-biased aggregation behavior in tadpoles of R. cascadae in different ecological conditions. I manipulated food distribution, predator presence, thermal heterogeneity, and relatedness in a multifactorial mesocosm experiment. All four factors interacted to influence tadpole dispersion. My results suggest that...
Resource Type:: Dissertation
Full Text:: Behavior With Implications of Functional Value Abstract approved: Andrew R. Blaustein To assess the

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:: pesticides were toxic to A. macrodaclylum in the presence of UV-B. Chiorpyrifos caused mortality in R

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:: Food Quality and Trophic Interactions Abstract approved: Andrew R. Blaustein

All hosts are not created equal : variation in amphibian responses to an emerging fungal pathogen and why it matters

Creator:: Gervasi, Stephanie S.
Abstract:: Emerging infectious diseases are increasing globally and are a threat to human, wildlife, and ecosystem health. The emerging fungal pathogen, Batrachochytrium dendrobatidis (Bd), or amphibian chytrid fungus, is associated with worldwide amphibian population declines and extinctions. Bd has been found on every continent where amphibians exist and has been documented...
Resource Type:: Dissertation
Full Text:: Responses to an Emerging Fungal Pathogen and Why it Matters Abstract approved: Andrew R. Blaustein

Observations on respiratory metabolism in the red-spotted garter snake Thamnophis sirtalis concinnus Hallowell

Creator:: Stewart, Glenn R.
Resource Type:: Masters Thesis
Full Text:: general physiological state or the animal. Under a given set or conditions., a composite indicator o,r

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:: concinnus (Hallowell) and Thamnophis ordinoides (Baird & Girard) AN ABSTRACT OF THE THESIS OF GLENN R

The ecological and behavioral dynamics of breeding in three sympatric anuran amphibians

Creator:: Olson, Deanna H.
Abstract:: Breeding ecology and behavior were investigated in a field study of three sympatric anuran amphibians in the Oregon Cascade Mountains: the western toad (Bufo boreas), the Cascades frog (Rana cascadae) and the Pacific treefrog (Hyla regilla). A comprehensive study of the western toad mating system was conducted at three populations...
Resource Type:: Dissertation
Full Text:: Behavioral Dynamics of Breeding in Three Sympatric Anuran Amphibians Abstract approved: Dr. Andrew R

Developmental cranial osteology of three species of Rana (Anura)

Creator:: Altig, Ronald Gail
Abstract:: Developmental series of Rana pretiosa (110 specimens), R. cascadae (100 specimens) and R. aurora (115 specimens) were bone stained and cleared in glycerin. The growth and developmental patterns of the skull and selected bones were followed from the first appearance of bone through adult stages. The sequential appearance of the...
Resource Type:: Dissertation
Full Text:: Developmental series of Rana pretiosa (110 specimens), R. cascadae (100 specimens) andR. aurora (115 specimens

A combined study of the growth of the grayling (Thymallus arcticus) and the development of its olfactory apparatus

Creator:: Watling, Harold
Resource Type:: Dissertation
Full Text:: ; Brown and Buck (8, p. r&-l4o), who studied the initiation of feeding in the grayling; and Brown (7, p

Surface motility phenomena accompanying division of tissue cells in vivo

Creator:: Weaver, Morris Eugene
Resource Type:: Dissertation
Full Text:: tissues, J. Boss (le, p. 181-187), inve.tigsted the ccl]. surface ihspges aøclpan3ring mitosis !rcm, the

ScholarsArchive@OSU

Ecological aspects of kin discriminating behavior with implications of functional value

Multiple stressors and amphibian population declines

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

All hosts are not created equal : variation in amphibian responses to an emerging fungal pathogen and why it matters

Observations on respiratory metabolism in the red-spotted garter snake Thamnophis sirtalis concinnus Hallowell

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

The ecological and behavioral dynamics of breeding in three sympatric anuran amphibians

Developmental cranial osteology of three species of Rana (Anura)

A combined study of the growth of the grayling (Thymallus arcticus) and the development of its olfactory apparatus

Surface motility phenomena accompanying division of tissue cells in vivo

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