The Comparative Susceptibility of the Diamondback Moth Plutella xylostella and Some Other Major Lepidopteran Pests of Brassica Crops to a Range of Baculoviruses
| Autor: | Norman E. Crook, Hussan Bin Abdul Kadir, Christopher C. Payne, Doreen Winstanley, John S. Fenlon |
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| Rok vydání: | 1999 |
| Předmět: |
Larva
Veterinary medicine animal structures Diamondback moth biology viruses fungi Brassica Plutella biochemical phenomena metabolism and nutrition biology.organism_classification Virology body regions Galleria mellonella Autographa californica Granulovirus Insect Science Instar Agronomy and Crop Science |
| Zdroj: | Biocontrol Science and Technology. 9:421-433 |
| ISSN: | 1360-0478 0958-3157 |
| Popis: | The susceptibility of larvae of the Diamondback moth (DBM), Plutella xylostella to infection by three baculoviruses was evaluated in the laboratory using a microdroplet feeding assay. The viruses tested were a granulovirus (GV), originally isolated in Taiwan from P. xylostella larvae (Px GV-Taiwan); the nucleopolyhedrovirus (NPV) from Galleria mellonella (Gm NPV), and the NPV from Autographa californica (Ac NPV). Neonate P. xylostella larvae were susceptible to infection by all three viruses. In an extensive series of bioassays carried out over a 21-month period, LD 50S for neonate DBM larvae ranged from 1.0-8.9 viral occlusion bodies (OB) for Px GV-Taiwan, and 9.5-30.2 OB for Gm NPV and Ac NPV. LT 50S for the three viruses ranged from 3.8-6.0 days at 27 C, with Gm NPV having a significantly shorter LT 50 than the other two viruses. Second and third instar larvae of P. xylostella were significantly less susceptible to infection by Px GV-Taiwan (LD 50 s ranging from 18-57 OB/larva) than were neonate larvae... |
| Databáze: | OpenAIRE |
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