Figure 3. rh5- and rh6-dependent temperature selection depends on trpA1-neurons, but not the Bolwig organ.
(A) Staining of control (w1118) larvae with anti-Rh6. The antibodies labeled neurons in the Bolwig organ (arrows) and their processes that extend to the brain (arrowheads). The scale bars in A and B represent 100 μm.
(B) Anti-Rh6 staining was not detectable after elimination of photoreceptor cells in the Bolwig organ with GMR-hid.
(C) Thermal preferences of control (w1118), GMR-hid, and GMR-hid larvae carrying either the rh5G or rh6G mutations. n=6-7.
(D, E, F) Fraction of larvae in the 18°C zone of an 18°—28°C thermal gradient after expressing UAS-kir using the indicated GAL4 lines. The control larvae harbored the UAS-kir (UAS-kir/+) transgene only. n=4-5.
(G) Distribution of the indicated trpA1 mutants in the six indicated temperature zones. n=3-4.
See also Figure S3.