Muskrat population dynamics on a controlled wetland in southern Saskatchewan / David W. Phillips.
Material type:
TextPublication details: Regina, SK : University of Regina, 1979.Description: ix, 188 leaves : ill. , maps ; 28 cmOnline resources: Abstract: Muskrats became re-established at Eyebrow Lake in 1968 when the wetland was reconstructed after eight years of drainage. A comprehensive investigation of the population dynamics of this muskrat population was conducted between January 1977 and April 1978 in order to obtain the biological information essential for effective management of muskrats in controlled wetlands. Emphasis was placed upon the survival patterns,productivity, density and limiting factors within the study population.Sample age ratios indicated that the survival patterns and productivity in the study population were similar to those reported for high density muskrat populations elsewhere. Sex-related differential survival patterns in the study group were reflected in sex ratios obtained during six sample intervals. Sex ratios were found to shift from a near-balanced nestling ratio to a fall juvenile ratio which was strongly imbalanced in favor of males. The juvenile sex ratio remained constant between fall and spri
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Thesis(M.Sc.)--University of Regina, 1979.
Includes bibliographical references (leaves 95-100).
Muskrats became re-established at Eyebrow Lake in 1968 when the wetland was reconstructed after eight years of drainage. A comprehensive investigation of the population dynamics of this muskrat population was conducted between January 1977 and April 1978 in order to obtain the biological information essential for effective management of muskrats in controlled wetlands. Emphasis was placed upon the survival patterns,productivity, density and limiting factors within the study population.Sample age ratios indicated that the survival patterns and productivity in the study population were similar to those reported for high density muskrat populations elsewhere. Sex-related differential survival patterns in the study group were reflected in sex ratios obtained during six sample intervals. Sex ratios were found to shift from a near-balanced nestling ratio to a fall juvenile ratio which was strongly imbalanced in favor of males. The juvenile sex ratio remained constant between fall and spri