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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

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:: HABITS OF LARVAL BULLFROGS, RANA CATESBEIANA SHAW, IN WESTERN OREGON Abstract approved: Dr. Robert

A distributional study of the birds of Montana

Creator:: Davis, Clifford Vernon, 1914-
Resource Type:: Dissertation
Full Text:: - tinuous enthusiastic support end encouragement. Dr. Alden H. Miller arranged for the subspecies

Habitat selection behavior in three species of anuran larvae : environmental cues, ontogeny, and adaptive significance

Creator:: O'Hara, Richard K.
Abstract:: Habitat selection behavior was investigated as a proximate mechanism influencing spatial distributions of three species of anuran larvae. Rana cascadae, Hyla regilla, and Bufo boreas overlap in distribution in lakes and ponds of the Cascade Mts. and were chosen to provide a comparative basis for analyzing habitat selection behavior. Major...
Resource Type:: Dissertation

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

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

A study of behavior in the deer mouse Peromyscus maniculatus rubidus Osgood during its 24-hour cycle of activity in a simulated natural habitat

Creator:: Laban, Cornelis
Abstract:: With a growing emphasis on details of behavior comes an increasing need for knowledge of natural behavior patterns. Studies on the life history of Peromyscus maniculatus have long been available in the literature. More recently, investigators have turned to analyzing the behavior of some of the subspecies of P.m. in...
Resource Type:: Dissertation
Full Text:: !! ACKNOWLEDGMENT I wish to express sincere thanks to my major professor Dr. Robert M. Storm, for the help

Geographic variation in Dunn's salamander Plethodon dunni Bishop (Amphibia:Caudata:Plethodontidae)

Creator:: Hanlin, Hugh Grady
Abstract:: Life history attributes and apparent distributional patterns suggest that Plethodon dunni exists as small, semi-isolated populations throughout its range. Isozyme and morphological variation in this species was examined to determine any possible geographic trends. Starch gel electrophoresis was utilized to examine genetic variation at 24 isozyme loci in 287 individuals...
Resource Type:: Dissertation
Full Text:: Privacy Dr. Robert M. Storm Life history attributes and apparent distributional patterns suggest that

Investigation of the circadian rhythm of locomotion in the rough-skinned newt, Taricha granulosa

Creator:: Briggs, Jeffrey Lawrence
Abstract:: Over 56,000 hours of locomotor activity of Taricha granulosa were recorded using two types of low cylindrical plastic monitoring chambers. This species shows distinct rhythms of activity under normal day-night cycles, shortened day-night cycles, constant darkness (DD) and constant light (LL). The rough-skinned newt is day active and crepuscular. I...
Resource Type:: Dissertation
Full Text:: LOSA Abstract approved: Redacted for Privacy (Robert M. Storm) Over 56,000 hours of locomotor

ScholarsArchive@OSU

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

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

A distributional study of the birds of Montana

Habitat selection behavior in three species of anuran larvae : environmental cues, ontogeny, and adaptive significance

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

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

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

A study of behavior in the deer mouse Peromyscus maniculatus rubidus Osgood during its 24-hour cycle of activity in a simulated natural habitat

Geographic variation in Dunn's salamander Plethodon dunni Bishop (Amphibia:Caudata:Plethodontidae)

Investigation of the circadian rhythm of locomotion in the rough-skinned newt, Taricha granulosa

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