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Fig. 4. Ontogeny of cuticular hydrocarbons of various chain lengths during the
first 2 days of imaginal life following a heat shock 3 h after AE.
Hydrocarbons were pooled according to the length of their carbon chain
(23C-33C). The hydrocarbons usually secreted by immature flies range from
29C-33C (broken lines), whereas the CHs produced by mature flies mostly have
23C-29C (solid lines). Experimental (+HS) and control (no HS) flies are males
(A) and females (B) from the hsp70-GAL4 x UAS-tra
(hsp-tra) genotype. Values are means of absolute amounts (ng)
± S.E.M. of pooled CHs after extraction in 6-48 h-old flies (age is
given as h after AE). For each data point, N=8-10.