Fig. 2From: Evolution of compound eye morphology underlies differences in vision between closely related Drosophila species3D analysis of ommatidia size and shape in male and female D. simulans M3 and D. mauritiana RED3. a Synchrotron radiation microtomography analyses of males and females show a gradient from smaller to larger ommatidia from dorsal to anterior-ventral. D. simulans M3 females and especially males show an overall shift to smaller ommatidia compared to D. mauritiana RED3. b Analysis of ommatidia numbers show similar ommatidia numbers in females of both species and fewer ommatidia in males in line with overall smaller eye size. c 3D reconstruction of the optic lobe (lamina, medulla, lobula, and lobula plate) of a male D. mauritiana RED3. d Volume analysis of optic lobe neuropil sizes show a similar pattern to ommatidia number differences (b) between sexes and strains: males of D. simulans M3 and D. mauritiana RED3 have generally smaller neuropils, most evident in lamina and medulla (n (a–d) = 3). e, f Shape analysis of frontal (yellow) and central (green) ommatidia reveals separate clustering of frontal and central ommatidia for both species. n = 30. Data points are provided in Fig. 2 synchrotron analysis.xlsx and Fig. 2 morphometric analysis.xlsx on figshare [29]Back to article page