Abstract
Dendrolimus kikuchii Matsumura nucleopolyhedrovirus (DekiNPV) has been considered as a biological control agent against D. kikuchii. We examined the infectivity and replication of DekiNPV in 11 other lepidopteran species, including Dendrolimus houi (Lajonquiere), Dendrolimus punctatus (Walker), D. punctatus wenshanensis (Tsai et Liu), Dendrolimus spectabilis (Butler), Hyphantria cunea (Drury), Lymantria dispar (L.), Ectropis grisescens (Warren), Helicoverpa armigera (Hübner), Spodoptera exigua (Hübner), Plutella xylostella (L.) and Spodoptera litura (Fabricius) larvae to define the host range of DekiNPV and identify suitable alternate hosts. Our study showed that DekiNPV is highly specific to D. kikuchii, but triggers covert infections in H. cunea, D. houi, D. punctatus, D. punctatus wenshanensis and D. spectabilis larvae into overt symptoms, indicating that DekiNPV is suitable as an ideal biocontrol agent for D. kikuchii, D. houi, D. punctatus, D. punctatus wenshanensis, D. spectabilis and H. cunea.
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