Small RNA production from ALFE1 to ALFE3 and their flanking regions in the A. albopictus genome. The small RNA profiles (left) and the size distributions (right) of small RNAs mapped to ALFE1 (A), ALFE2 (B), and ALFE3 (C) and their flanking sequences are shown. The schematic representation in each panel indicates the ALFE and its flanking region. The x axis represents the nucleotide position on the respective contig. The y axis shows the number of reads for each nucleotide position. Orange and blue bars, positive- and negative-stranded small RNAs, respectively; gray lines in the left panels, uncovered regions.