Fig. 5.
Measuring host-level selection on Buchnera haplotypes 5AE and LSR1 in a common aphid genotype background. (A) Experimental design included first growing each of the two lines in sublines to control for maternal effects due to variable rearing conditions. Aphids fixed for alternative Buchnera haplotypes were then competed in cages with plants, sampled and transferred weekly for 12 wk, in 18 replicate populations. (B) Buchnera haplotype frequencies in pooled population samples in successive weeks. The diagonal line corresponds to equal frequencies in successive samples. n = 204 population samples.