Figure 2

Average single sensillum amplitude ratios for all individuals in each O. nubilalis strain or cross. A) Populations are ordered according to predicted genotype assuming sex linkage of the peripheral amplitude trait (Table 1). B) Individuals are arranged from lowest to highest average ratio for each strain or cross. Ratios compare the spike amplitude of the response to the E pheromone isomer and the Z, and are presented at x-50% so that individuals with equal average amplitude responses to both isomers lie at 0%. Individuals above 0 have a higher average amplitude response to the E isomer while individuals below 0 have a higher average response to Z. Letters in the corner of each graph show least significant difference groupings (p> 0.05) according to post-hoc LSD tests for individual (Table 1). Populations with different letters are significantly different according to LSD tests (p< = 0.05), and populations with multiple letters are common to more than one group.