Figure 7. The frequency of the 2La inversion is correlated with ecology.
Frequency of the 2L+a allele was plotted as a function of annual rainfall across an ~350 km ecological transect from arid savanna in southern Mali to deep forest in southern Guinea-Conakry, and displayed a positive correlation (r2 = 0.86, sample sizes from lowest to highest 2L+a frequency, respectively, are n = 190, 191, 365, and 259). Because the samples used in this analysis included individuals from two taxa, A. gambiae and A. coluzzii, an additional analysis of ecological correlation was conducted for each taxon, shown in Figure 7—figure supplement 1.
Figure 7—figure supplement 1. Correlation of 2L+a frequency with annual rainfall is reproduced in individual mosquito taxa.
When the two sister taxa present in Figure 7, A. gambiae and A. coluzzii, were deconvoluted, each still displayed high positive correlation of 2L+a frequency with annual rainfall.