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Filtering by: Creator Nath, John H. Remove constraint Creator: Nath, John H. Academic Affiliation Fisheries and Wildlife Remove constraint Academic Affiliation: Fisheries and Wildlife Subject Cottontails Remove constraint Subject: Cottontails

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  • Transferrin polymorphism in a population of Nuttall's cottontail in central Oregon

    Creator:
    Skalski, John Raymond
    Abstract:
    Temporal changes in gene frequencies and genotype frequencies, monthly densities, survival rates, growth rates, trap susceptibility and home ranges were evaluated from 291 Nuttall's cottontails (Sylvilagus nuttallii) captured 950 times by livetrapping and 53 cottontails collected by shooting. Electrophoretic analyses of sera revealed protein polymorphism at the transferrin locus in...
    Resource Type:
    Masters Thesis
    Full Text:
    cottontail in central Oregon AN ABSTRACT OF THE THESIS OF JOHN RAYMOND SKALSKI for the degree of MASTER OF

  • 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:
    indebted to many persons who volunteered their aid when it was most needed, among them were Mr. John A

  • Morphological changes in introduced eastern cottontails in Oregon

    Creator:
    Rhodes, Mark Nicolas
    Abstract:
    Descendants of eastern cottontails from Ohio (Sylvilagns floridanus) introduced in Benton County, Oregon and cottontails from Ohio were sampled and analyzed morphometrically and colorimetrically. In general, Oregon cottontails were smaller and lighter in color than Ohio rabbits. Introgression and interspecific competition with the smaller and darker colored native brush rabbit...
    Resource Type:
    Masters Thesis
    Full Text:
    )- Vzw 0= a10 w cc Lt. r 7 H r"-1 ri rr-r2-i n n v. 0 . i-n,-, 10. 0 . 0.4 INIMI 111111M1, _1 AM

  • Reproduction in the eastern cottontail rabbit in Oregon

    Creator:
    Trethewey, Donald Edwin
    Abstract:
    Reproductive characteristics of introduced eastern cottontail rabbits, Sylvilagus floridanus (J. A. Allen), were determined from 486 rabbits collected between January 1, 1968 and June 30, 1969, near Corvallis, Oregon. Sex ratios were 1:1 for all rabbits collected and for all embryos 20 days or more gestation. On the basis of...
    Resource Type:
    Masters Thesis
    Full Text:
    . Bethers, Joseph A. Chapman, John A. Gill, Richard L. Lantz, Stanley A. Ludwig, and Roger A. Powers, De