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Figure 3 | EvoDevo

Figure 3

From: Spalt expression and the development of melanic color patterns in pierid butterflies

Figure 3

Lack of correspondence between Sal and adult wing pattern elements. (A) Close-up of P. oleracea dorsal forewing (as in Figure 1E), showing the lack of melanized pattern elements at the cross-vein region and wing margin. (B) Sal expression in the region of the cross-vein of P. oleracea but not in rows of scale-building cells. (C) Sal is expressed in the midline of a wing compartment extending proximally from distal wing margins; expression occurs in rows of scales as in the panels in Figure 1 (P. oleracea; 44 to 49.5 h post-pupation; 19°C). (D) Close-up of Colias ventral hind-wing cross-vein "eyespot". (E) Sal is expressed in densely-packed cells in the cross-vein, as in the forewing cross-vein, but not in rows of scale-building cells (12.5 h; 25°C). (F) Heavily-melanized veins of P. oleracea ventral hindwing lack detectable Sal expression (G) along these wing veins (44 h; 19°C). (H) Diffuse melanization of basal dorsal forewing in female P. rapae lack detectable Sal expression (I) (26.6 h; 25°C). (J) Diffuse melanization of ventral hindwing in P. rapae lack detectable Sal expression (K) in the ventral hindwing (23 h post-pupation; 25°C).

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