Figure 1

Location of woodrat contact zone in the Kelso Valley of the southern Sierra Nevada, California where females and males for mate preference trials were trapped from seven localities (●). Pie charts represent the genotypic proportion of Neotoma bryanti (black), N. lepida (white), and hybrids (cross-hatch). Sample sizes (n) of experimental [and genotyped] individuals are noted with each piechart. Letters in inset indicate counties of origin for specimens that were used as part of an analysis of body mass (A = Alameda, I = Inyo, K = Kern, L = Lassen, B = San Bernadino, and D = San Diego).