Muskrat growth and litter production
Source:
Dorney, Robert S.; Rusch, Alan J.. Hale, James B., Editor
Muskrat growth and litter production
(Technical bulletin. (Wisconsin Dept. of Natural Resources), Number 8)
Game Management Division, Wisconsin Conservation Department, 1953
32 pgs.
To determine the successs of a breeding season, it is necessary to know the number of young produced, when they are produced, and their relative survival rates. For muskrats (Ondatra zibethica), one method used to estimate the number of young produced is to count litters in muskrat houses throughout the breeding season. Litters varying in age from newly born to 30 days old are commonly handled when muskrat houses are opened. To calculate the birth dates of these litters and their relative survival rates, it is essential that accurate aging criteria be developed. Thus a knowledge of muskrat kit growth rates is needed to determine the success of a muskrat breeding season.
URL to cite for this work: http://digital.library.wisc.edu/1711.dl/EcoNatRes.DNRBull8
Contents
[Front cover] Muskrat growth and litter production
[Title page] Muskrat growth and litter production, p. [1]
Acknowledgments, p. 2
Table of contents, p. 3
Introduction, p. 4
The study area, pp. 4-5
Procedures, pp. 5-9
Results, pp. 9-30
Summmary, p. 31
Literature cited, pp. 32 ff.
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