Effects of miR-6-3p, miR-9a-3p, miR-9d-3p, miR-11-3p, and miR-13a-3p on development of T. castaneum. (A,B) The expression level of miR-6-3p, miR-9a-3p, miR-9d-3p, miR-11-3p, and miR-13a-3p in wild-type (WT) insects, negative controls (NC) and the corresponding miRNA-specific antagomirs treated-samples (AI) at 48 h post injection by PCR. (C) Phenotypes induced by injecting miRNA-specific antagomirs. Three individuals from each group were used to determine gene expression level by PCR, and the results were calculated from three biological samples. “*” indicates p < 0.05. Scale bar: 1000 μm.