Figure 1

Geographic variation in allele frequencies at the Idh -1 locus in the cricket Allonemobius socius. (A) Allele frequency data from field-collected populations (data from [14]), represented by individual points; lines are least-squares regressions. The 1.8 allele is symbolized by open diamonds and a dashed line, the 2.0 allele by grey squares and a grey line, and the 2.2 allele by black circles and a black line. (B) Relationship between allele frequencies and average summer (June-August) temperature near collection locality.