It has been reported that the RNAi pathway is inhibited by binding RNAi suppressors encoded by some insect-specific viruses belonging to
Dicistroviridae
,
Nodaviridae
, or
Birnaviridae
to dsRNAs to protect dsRNAs from being cut by Dicer-2. However, it is unknown whether BmCPV, belonging to
Spinareoviridae
, encodes an RNAi suppressor.