Fig. 3
From: Inverse resource allocation between vision and olfaction across the genus Drosophila
Three-dimensional reconstructions of the visual and olfactory neuropils in six Drosophila. Red to yellow (warm) color signifies vision or visual bias, while blue indicates olfaction or olfactory species. a Whole brain reconstructions, highlighting visual (yellow to red) and olfactory (blue) regions, with central brain in gray. b The optic lobe (OL) to antennal lobe (AL) ratio for each species, showing the division between olfactory and visual bias among species. c Diagram of all measured volumes for comparison between species. d Relative sizes of OL (yellow) and AL (blue) as compared to the central brain, where the data show an inverse correlation between visual or olfactory investment. e Separate regions of OL and AL that were measured as a percentage of the central brain to provide a comparable value between insects of differing absolute size, again highlighting that brain regions mirror external measurements of visual or olfactory size bias. d, e Means with the same letter are not significantly different from each other (ANOVA with Tukey–Kramer multiple comparison test). Error bars represent standard deviation. (Data are provided at https://doi.org/10.17617/3.1D)
