Figure 2. North American distributions of eight Peromyscus species currently maintained as outbred laboratory stocks (based on data from Hall, 1981).
Some ranges are narrow and others are extensive, with many overlapping to a large extent. Simplified tree indicating phylogenetic relationships among taxa is shown; branch lengths are arbitrary (based on data from Bradley et al., 2007). The most widespread and ecologically diverse group is also the best represented in the laboratory: six P. maniculatus subspecies are maintained in laboratories across the United States. Collecting localities of colony founders are indicated by numbered squares (see also Table 2). Image credit, Nicole Bedford and Hopi Hoekstra.