Relationships of latitude, altitude, and body size to litter size and mean annual production of offspring inPeromyscus |
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| Authors: | Michael H Smith and John T McGinnis |
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| Institution: | (1) Departments of Zoology and Botany, University of Georgia, USA;(2) Institute of Ecology University of Georgia, USA;(3) Savannah River Ecology Laboratory, SROO, Box A, 29801 Aiken, South Carolina, USA |
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| Abstract: | Summary Litter size was positively correlated with latitude and altitude but not with production of offspring or with body size inPeromyscus. Increased litter size in northern populations probably reflects shortening the breeding season by climate and not a greater
mortality rate at northern latitudes compared to southern latitudes. Production of offspring was negatively correlated with
body size but not with latitude, altitude, or litter size. This is probably due to larger species living longer and taking
longer to mature. |
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