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A comparative study of the chromosomes from five species of the genus Rana

Creator:: Haertel, John David
Abstract:: The karyotypes of five species of ranid frogs were determined from metaphase plates of bone marrow cells. The colchicine, hypotonic- citrate, blaze-dry technique was used to obtain the plates. Morphometric datawere obtained from the karyotypes and compared with other species of the genus Rana. Like most other members of the...
Resource Type:: Dissertation
Full Text:: John David Haertel 1970 ALL RIGHTS RESERVED A Comparative Study of the Chromosomes from Five

The respiratory ecology of the rough-skinned newt Taricha granulosa (Skilton)

Creator:: Smith, John Martin
Abstract:: An investigation was undertaken to determine if respiratory changes might occur in conjunction with migrations of the rough-skinned newt, Taricha granulosa (Skilton) in and out of ponds in the Willamette Valley. A field study was carried on from December 1964 through October 1965 to investigate certain physical and chemical parameters...
Resource Type:: Dissertation

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:: BETWEEN RANA PRETIOSA PRETIOSA BAIRD AND GIRARD AND RANA CASCADAE SLATER by JOHN DAVID HAERTEL A

Summering birds of the Cape Arago region, Coos County, Oregon

Creator:: Giesler, John Calvin
Resource Type:: Masters Thesis
Full Text:: , Oregon S US ' .ING BIRDS OF THE CAPE ARAGO REGION COOS COUNTY, OREGON by JOHN CALVIN GIESLER A

The habitat requirements and ecological relationships of Microtus oregoni (Bachman), Microtus townsendii (Bachman), and Microtus montanus (Peale) in Benton County, Oregon

Creator:: Goertz, John William
Abstract:: The object of this research is to ascertain the habitat occupied by each of the three species of voles of the genus Microtus found living in Northern Benton County, Oregon.
Resource Type:: Masters Thesis
Full Text:: TOWNSENDII (BACHNAN), AND MICROTUS MONTANUS (PEALE) IN BENTON COUNTY, OREGON JOHN WILLIAM GOERTZ A

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

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:: ) received from a surveying expedition commanded by Lieutenant John Mullen. The location was given as

Studies on the biology of Triturus granulosus Skilton

Creator:: Pimentel, Richard A.
Resource Type:: Dissertation
Full Text:: STUDIES ON THE BIOLOGY OF TRITLJRUS GRANULOSUS SKILTON by RICHARD ANTHONY PIMENTEL A THESIS

A capture-recapture analysis of a mountain beaver population in western Oregon

Creator:: Lovejoy, Bill Pertl
Abstract:: This report summarizes the results of a field study of a population of the Pacific mountain beaver, Aplodontia rufa pacifica, from August 1965 through August 1967. The study site consisted of a 13. 5- acre grid on a logged over area in the Coast Range Mountains of Benton County, Oregon....
Resource Type:: Dissertation
Full Text:: -RECAPTURE ANALYSIS OF A MOUNTAIN BEAVER POPULATION IN WESTERN OREGON Abstract approved: Redacted for

An analysis of a small mammal population census

Creator:: Schamberger, Melvin
Abstract:: During the spring of 1963 and 1964 an investigation of a small mammal community was made in McDonald Forest, near Corvallis, Oregon. The revised North American Census of Small Mammals procedure was used, and from this census the species composition of the community was determined. The relationships of several genera...
Resource Type:: Masters Thesis
Full Text:: An analysis of a small mammal population census AN

ScholarsArchive@OSU

A comparative study of the chromosomes from five species of the genus Rana

The respiratory ecology of the rough-skinned newt Taricha granulosa (Skilton)

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

Summering birds of the Cape Arago region, Coos County, Oregon

The habitat requirements and ecological relationships of Microtus oregoni (Bachman), Microtus townsendii (Bachman), and Microtus montanus (Peale) in Benton County, Oregon

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

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

Studies on the biology of Triturus granulosus Skilton

A capture-recapture analysis of a mountain beaver population in western Oregon

An analysis of a small mammal population census

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