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Field Efficacy and Transmission of Fast- and Slow-Killing Nucleopolyhedroviruses that Are Infectious to Adoxophyes honmai (Lepidoptera: Tortricidae)

1
United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan
2
Chiba Prefectural Agriculture and Forestry Research Center, Chiba 266-0006, Japan
3
NARO Institute of Vegetable and Tea Science, Shimada, Shizuoka 428-8501, Japan
4
NARO Agricultural Research Center, 3-1-1 Kannondai, Tsukuba, Ibaraki 305-8666, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Karyn Johnson
Viruses 2015, 7(3), 1271-1283; https://doi.org/10.3390/v7031271
Received: 6 January 2015 / Accepted: 11 March 2015 / Published: 18 March 2015
(This article belongs to the Special Issue Insect Viruses and Their Use for Microbial Pest Control)
The smaller tea tortrix, Adoxophyes honmai (Lepidoptera: Tortricidae), is an economically important pest of tea in Japan. Previous work showed that a fast-killing nucleopolyhedrovirus (NPV) isolated from A. orana (AdorNPV) and a slow-killing NPV isolated from A. honmai (AdhoNPV) are both infectious to A. honmai larvae. Field application of these different NPVs was conducted against an A. honmai larval population in tea plants, and the control efficacy and transmission rate of the two NPVs were compared. The slow-killing AdhoNPV showed lower field efficacy, in terms of preventing damage caused by A. honmai larvae against the tea plants, than the fast-killing AdorNPV. However, AdhoNPV had a significantly higher horizontal transmission rate than AdorNPV. These results show that AdorNPV is suitable as an inundative agent, while AdhoNPV is an appropriate inoculative agent. View Full-Text
Keywords: nucleopolyhedrovirus; tea field; killing speed; transmission rate; leaf damage; alternative agent nucleopolyhedrovirus; tea field; killing speed; transmission rate; leaf damage; alternative agent
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MDPI and ACS Style

Takahashi, M.; Nakai, M.; Saito, Y.; Sato, Y.; Ishijima, C.; Kunimi, Y. Field Efficacy and Transmission of Fast- and Slow-Killing Nucleopolyhedroviruses that Are Infectious to Adoxophyes honmai (Lepidoptera: Tortricidae). Viruses 2015, 7, 1271-1283.

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