Department of Child Health, Clinical Sciences Building, York Place, Manchester 13.
Total reproductive performance of captive house mice at two temperatures
Article first published online: 6 MAY 2010
Journal of Zoology
Volume 163, Issue 4, pages 443–450, April 1971
How to Cite
Barnett, S. A., Smart, J. L. and Stoddart, R. C. (1971), Total reproductive performance of captive house mice at two temperatures. Journal of Zoology, 163: 443–450. doi: 10.1111/j.1469-7998.1971.tb04543.x
- Issue published online: 6 MAY 2010
- Article first published online: 6 MAY 2010
- (Accepted 13 October 1970)
Wild house mice, Mus musculus L., were trapped on a farm, and bred in the laboratory at two environmental temperatures, 21°C and −3°C. The reproductive performance of 12 pairs of the second generation reared in the laboratory was recorded to the age of two years; ten pairs of the first generation were transferred to −3°C at mating, and were similarly observed for two years. The wild mice at 21°C resembled inbred laboratory mice in litter size and the weight of young at three weeks, but produced many more litters: nestling mortality was about 16%. The fertility of the wild mice was, however, inferior to that of some outbred laboratory mice. At −3°C the number of litters per pair was about half that at 21°C, and nestling mortality was over 50 % losses were mainly of whole litters. Litters at birth tended to be larger at −3°C; the young aged three weeks were heavier in the cold environment. At birth, fifth litters were largest at 21°C, and fourth litters at −3°C. Weights of individual young aged three weeks tended to rise with parity in both temperatures. Some mice, in both temperatures, continued to produce litters for the full two years.