Figure 6

M. domestica L3 scanning electron photomicrographs: (a) depict the control group with normal intersegmental spinules, while (a') illustrates the degeneration of intersegmental spinules in the treated group. In (b), a typical anterior spiracle is presented, and (b') shows the anterior end of a larva treated with degeneration of the anterior spiracle. Moving to (c), the control larva's anal division is observed, noting the anal opening (ao), pre-anal welt (pre), and anal papillae (ap). In contrast, (c') illustrates the posterior end of a larva treated with CdS NPs, indicating severe degeneration in the anal division. Finally, (d) displays the posterior end of the control larva with typical posterior spiracles (ps), while (d') shows the posterior end of the larva treated with CdS NPs, revealing severe damage to the posterior spiracles. Abbreviations: s = spinules; as = Anterior spiracle; ao = anal opening; ap = anal papillae; pre = pre-anal welt; ps = posterior spiracles.