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

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

An analysis of a population of snowshoe hares, Lepus americanus washingtonii Baird, in western Oregon

Creator:: Black, Hugh C., 1941-
Abstract:: The ecology of a population of snowshoe hares, Lepus americanus washingtonii, was studied in western Oregon from 1960 to 1962. Objectives were to obtain information to control hares, which frequently cause damage to coniferous reproduction in the region, and to compare the life history of this little-studied subspecies with others....
Resource Type:: Dissertation
Full Text:: appreciation to my major professor, Dr. Robert M. Storm, for his continued interest and encouragement

A dietary and morphometric analysis of sceloporine (Iguanidae) lizard populations

Creator:: White, Robert Lewis, II
Abstract:: Analyses of sympatric and allopatric populations of Sceloporus occidentalis and S. graciosus from central Oregon indicate a high degree of similarity in diet. Relative abundance, the equivalent number of equally common taxa (E), and the probability of similarity (SIMI) were used in the analyses. Shifts in diet between populations of...
Resource Type:: Dissertation
Full Text:: (Iguanidae) lizard populations AN ABSTRACT OF THE THESIS OF ROBERT LEWIS WHITE, II for the degree of

The early development of Ambystoma macrodatylum baird, with emphasis on the larval stages

Creator:: Hollenbeck, Robert Rudolph
Abstract:: The embryonic and larval stages of the long-toed salamander, Ambystoma macrodactylum are described from fertilization through the development of five toes on the posterior limbs. New stage numbers are employed in the description of the hind limb. The eggs used in the study were obtained by the injection of pituitary...
Resource Type:: Masters Thesis
Full Text:: , With Emphasis on the Larval Stages AN ABSTRACT OF THE THESIS OF ROBERT RUDOLPH HOLLENBECK for the M

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

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

Morphological variations in populations of Lacerta from islands in the Adriatic Sea

Creator:: Clover, Robert C.
Abstract:: Phenetic relationships in insular populations of Lacerta sicula and L. melisellensis correspond to geologic ages of the islands in two regions of the Adriatic Sea. Populations of L. melisellensis on older islands are more similar to populations of L. sicula than are L. melisellensis from younger islands, and examination of...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF ROBERT C. CLOVER for the degree

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

ScholarsArchive@OSU

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

Geographic variation and systematics of the western Plethodon

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

An analysis of a population of snowshoe hares, Lepus americanus washingtonii Baird, in western Oregon

A dietary and morphometric analysis of sceloporine (Iguanidae) lizard populations

The early development of Ambystoma macrodatylum baird, with emphasis on the larval stages

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

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

Morphological variations in populations of Lacerta from islands in the Adriatic Sea

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

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