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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:: varying degrees of success. Matthey (1949) super- imposed chromosome numbers and Nombre Fondamental (N. F

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:: 2 ) and F-values for pairwise comparisons between populations of P. dunni when sexes are combined

Creator:: Pimentel, Richard A.
Resource Type:: Dissertation
Full Text:: of the F test to denote differences among trend data is having the da ta compiled in such a nnrr

Creator:: Humphrey, Donald Glen
Resource Type:: Dissertation
Full Text:: ' stud,-S,ng material t:rom the axolotl or the sir don. The methods usecl 'bJ these e.r17 workers

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:: transportation during the performance of the field work. Dr. Edward F. Hooven, also with the Forest Research

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:: wish to acknowledge help given by the following: Mr. Edward F. Hooven, assistant professor of

Creator:: Voth, Elver Howard, 1923-
Resource Type:: Dissertation
Full Text:: . Carnivore 1. Soricid M F D, N 2. Talpid M F D, N 3. Vespertilionid M AE N 4. Cricetid (Onychornys

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:: I j F M A M A S 0 N I 970 1 971 23 60 50 40 z LiiJ 30 >- c 0 20 N -J Irrigation Pond

Creator:: Davis, Clifford Vernon, 1914-
Resource Type:: Dissertation
Full Text:: Wood ?ewee . . Contoup ord1du1ua: Wetern wood -ewee 2143 1!uttaflorriis boreal5 ' : Olive-aided F

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