Index Catalog // ScholarsArchive@OSU

Size variation and food habits of larval bullfrogs, Rana catesbeiana Shaw, in western Oregon

Creator:: Brown, Randall Errol
Abstract:: An investigation was made of the factors which cause differences in growth rates and transformation size of bullfrog tadpoles under natural conditions. Tadpoles and algal samples were collected from two.adjacent farm ponds of similar size during the eighteen months of the study. It was found that the tadpoles in one...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF TILE THESIS OF RANDALL ERROL BROWN for the Ph.D

Variations in salinity tolerance in the Pacific Treefrog, Hyla regilla, in Oregon

Creator:: Roberts, James Oliver
Abstract:: Eggs, larvae and adults of the four subspecies of Hy la regilla occurring in Oregon as given by Jameson, Mackey and Richmond (1966) were collected and subjected to salt stress in a series of graded seawaters. It was found that in all cases adults were more tolerant than larvae and...
Resource Type:: Dissertation
Full Text:: PACIFIC TREEFROG, HYLA REGILLA, IN OREGON Abstract approved: Redacted for Privacy Dr. Robert M. Storm

The geographic variation and distribution of the long-toed salamander, Ambystoma macrodactylum Baird

Creator:: Ferguson, Denzel
Resource Type:: Dissertation
Full Text:: . Robert C. Stebbins, University of California; Dr. erineth Walkera College of Puget sound. The following

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:: - ACKNOWLEDGEMENTS I wish to express sincere thanks to my major professor, Dr. Robert M. Storm, for the help

Geographic variation and systematics of the western Plethodon

Creator:: Brodie, Edmund D.
Abstract:: The western Plethodon include vandykei vandykei, v. idahoensis, larselli, dunni,vehiculum, stormi, elongatus, and an undescribed form referred to as the "unstriped" Plethodon. These salamanders have been placed into three species groups: the Vandykei group, the Vehiculum group, and the Elongatus group. Range maps are provided and geographic variation is discussed...
Resource Type:: Dissertation
Full Text:: SYSTEMATICS OF THE WESTERN PLETHODON Abstract approved: Redacted for Privacy Dr. Robert M. Storm The

An analysis of vocalizations of the rufous-sided towhee Pipilo erythrophthalmus oregonus (Bell)

Creator:: Beltz, Joan Dunkel
Abstract:: The purpose of this study was to record on tape and to analyze the sonagrams of the complete repertoire of the vocalizations of the Rufous-sided Towhee, Pipilo erythrophthalmus oregonus. Meanings were assigned to a number of the calls. Sounds of nestlings, juveniles, and vocalizations connected with parental care were not...
Resource Type:: Dissertation
Full Text:: , and who willingly undertook the tediurn of editing this rnanuscript. Robert C. Stein, who is largely

Experimental hybridization between Rana pretiosa pretiosa Baird and Girard and Rana cascadae Slater

Creator:: Haertel, John David
Abstract:: Experimental crosses between Rana pretiosa pretiosa Baird and Girard and Rana cascadae Slater, resulted in viable hybrids. Reciprocal differences at the time of fertilization are indicated. A high level of success in producing viable hybrids can be obtained if Rana pretiosa pretiosa is the female of the parent species, The...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENT It gives me real pleasure to express my appreciation to my major professor, Dr. Robert M

Food habits of the Pacific mountain beaver, Aplodontia rufa pacifica Merriam

Creator:: Voth, Elver Howard, 1923-
Resource Type:: Dissertation
Full Text:: Abstract approved: Dr. Robert M. Storm The mountain beaver causes extensive loss to the Pacific

Systematics of the salamander genus Dicamptodon strauch (Amphibia: Caudata: Ambystomatidae)

Creator:: Nussbaum, Ronald A.
Abstract:: Dicamptodon is the single, extant genus of the ambystomatid subfamily Dicamptodontinae. Two species, D. ensatus (Eschscholtz) and D. copei Nussbaum are recognized. D. ensatus is found in the forested, mountain regions of northwestern California and western Oregon, in the Willapa Hills and Cascade Mountains of Washington, in extreme southwestern British...
Resource Type:: Dissertation
Full Text:: DICAMPTODONTitle: STRAUCH (AMPHTRTA : CAUDATA AMBYSTOMATIDAE) Redacted for Privacy Abstract approved: Dr. Robert

A distributional study of the birds of Montana

Creator:: Davis, Clifford Vernon, 1914-
Resource Type:: Dissertation
Full Text:: eleven hundred of the skins used in this study. Dre. Philip L. rirht and Robert S. Hoffmann permitted

ScholarsArchive@OSU

Size variation and food habits of larval bullfrogs, Rana catesbeiana Shaw, in western Oregon

Variations in salinity tolerance in the Pacific Treefrog, Hyla regilla, in Oregon

The geographic variation and distribution of the long-toed salamander, Ambystoma macrodactylum Baird

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

Geographic variation and systematics of the western Plethodon

An analysis of vocalizations of the rufous-sided towhee Pipilo erythrophthalmus oregonus (Bell)

Experimental hybridization between Rana pretiosa pretiosa Baird and Girard and Rana cascadae Slater

Food habits of the Pacific mountain beaver, Aplodontia rufa pacifica Merriam

Systematics of the salamander genus Dicamptodon strauch (Amphibia: Caudata: Ambystomatidae)

A distributional study of the birds of Montana

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