Abstract
-Golden mice (Ochrotomys nuttalli) and white-footed mice (Peromyscus leucopus) were live-trapped on 21 pine plantation sites in southern Illinois. The mean number of captures per individual, and the number of different raps in which they were taken, were significantly less for golden mice than for white-footed mice. Forty percent of individual golden mice were captured only once, compared to only 22% of white-footed mice. Microhabitat segregation and/or competitive xclusion were suggested by (1) a significant inverse relationship between the number of golden and white-footed mice on each site; and (2) the number of traps in which both species were caught was significantly less than expected. Behavior and competition may have influenced trap response of golden mice.
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