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Filtering by: Creator Wiedle, River Alan Remove constraint Creator: Wiedle, River Alan Advisor Verts, B. J. Remove constraint Advisor: Verts, B. J. Decade 1970-1979 Remove constraint Decade: 1970-1979 Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • The reproductive biology of the mountain cottontail rabbit in Oregon

    Creator:
    Powers, Roger Alan
    Abstract:
    The reproductive characteristics of the mountain cottontail rabbit, Sylvilagus nuttalli (Bachman), were investigated from 269 specimens collected in central Oregon between 28 May 1968 and 28 August 1969. Male rabbits were in breeding condition between mid-February and 3 July 1969. Nearly 77% of the females bore four litters between 7...
    Resource Type:
    Masters Thesis
    Full Text:
    in Oregon AN ABSTRACT OF THE THESIS OF Roger Alan Powers in for the Master of Science (Name

  • Effects of ethyl mercury on some parameters of reproduction in ring-necked pheasants

    Creator:
    Christensen, Alan Gene
    Abstract:
    Prior to onset of the breeding season, a ration containing 18.4 mg/kg N-(Ethylmercuri)-p-toluene sulphonanilide was fed to 6 male and 16 female ring-necked pheasants (Phasianus colchicus). Birds receiving the mercury-treated ration were separated from the opposite sex. After receiving the mercury-treated ration for 0, 2, 4, 8, or 16 days,...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF ALAN GENE CHRISTENSEN (Name of

  • Rare, endangered, and recently extirpated mammals in Oregon

    Creator:
    Olterman, James Howard
    Abstract:
    This paper lists, and gives individual accounts of, those Oregon mammals that at some time have been referred to as being of a status other than common. Although rare and endangered wildlife species were listed on a national level in the United States, the large areas of land included in...
    Resource Type:
    Masters Thesis
    Full Text:
    ), badger (Taxidea taxus), river otter (Lutra canadensis), northern sea lion (Eumetopias jubata