Field Evaluation of a Commercial Formulation of the Spodoptera exigua (Lepidoptera: Noctuidae) Nuclear Polyhedrosis Virus for Control of Beet Armyworm on Vegetable Crops in Thailand

Kolodny-Hirsch, Douglas M.; Sitchawat, T.; Jansiri, T.; Chenrchaivachirakul, A.; Ketunuti, U.

doi:10.1080/09583159730550

Cited by 39 publications

(23 citation statements)

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“…A commercial preparation of Spodoptera exigua multiple nucleopolyhedrovirus (SeMNPV) was first registered in United States (Spod-X † ), and thereafter in other countries of northern Europe (Smits et al 1987a;Bianchi et al 2001) and Thailand (Kolodny-Hirsch et al 1997). The Floridian strain of SeMNPV that forms the active ingredient of Spod-X contains parasitic genotypes that reduce the insecticidal activity of the product (Muñ oz et al 1998).…”

Section: Introductionmentioning

confidence: 99%

Efficacy ofSpodoptera exiguamultiple nucleopolyhedrovirus as a biological insecticide for beet armyworm control in greenhouses of southern Spain

Lasa

Pagola

Ibáñez

et al. 2007

Biocontrol Science and Technology

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Chemical control measures targeted at Spodoptera exigua in greenhouse sweet pepper crops in Spain have resulted in pest resistance to virtually all commercially available insecticidal products. A multicapsid nucleopolyhedrovirus (SeMNPV), isolated from diseased S. exigua in Spain, was produced in laboratory reared larvae, tested for insecticidal activity in a laboratory bioassay, and was then applied in eleven commercial greenhouses planted with sweet pepper. Virus occlusion bodies (OBs) were applied on two occasions, at an interval of Â7 days, at a rate of 5)10 8 OBs/L of spray in a volume of Â600 L/ha, depending on crop phenology and greenhouse area. The percentage of plants showing recent ( B48 h old) feeding damage fell dramatically in greenhouses with high infestations of S. exigua ; the same pattern was observed, although less dramatically, in greenhouses with low infestations. Average mortality of larvae collected from treated plants at 4 days after each application, and reared in the laboratory until death, was high (70 Á89%) and was not significantly affected by the degree of crop infestation. In a separate trial, the rate of acquisition of infection was examined in larvae that fed on plants treated with 1)10 8 or 5 )10 8 OBs/L of spray. Of the 27 and 60% of larvae, respectively, that acquired infection in the 48 h period after spraying, about half became infected in the first 6 h post-application, irrespective of application rate. Acquisition of infection proceeded more slowly during the night-time compared to the daytime period, underlining the advantages of early morning applications of the virus. We conclude that the Spanish SeMNPV isolate merits registration as a biological insecticide for use in greenhouse crops in this region.

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Section: Introductionmentioning

confidence: 99%

Efficacy ofSpodoptera exiguamultiple nucleopolyhedrovirus as a biological insecticide for beet armyworm control in greenhouses of southern Spain

Lasa

Pagola

Ibáñez

et al. 2007

Biocontrol Science and Technology

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“…In a recent 59 transcriptome analysis of a laboratory population of S. exigua, the 60 simultaneous presence of transcripts from putative DNA (S. exigua 61 multiple nucleopolyhedrovirus, SeMNPV) and RNA viruses (mainly 62 iflavirus but also cypovirus and noravirus) were identified (Pascual 63 et al, 2012). SeMNPV (genus Alphabaculovirus, family Baculoviridae) 64 is a highly specific pathogen of S. exigua with notable insecticidal 65 properties against this pest (Kolodny-Hirsch et al, 1997;;Lasa 66 et al, 2007;Smits and Vlak, 1994). This virus constitutes the active 67 ingredient of a number of bioinsecticides, including: SPOD-X Ò 68 (Certis, USA), SPEXIT Ò (Andermatt Biocontrol, Switzerland) and 69 VIR-EX Ò (Biocolor, Spain).…”

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Natural populations of Spodoptera exigua are infected by multiple viruses that are transmitted to their offspring

Virto

Navarro

Tellez

et al. 2014

Journal of Invertebrate Pathology

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“…The Spodoptera exigua multiple nucleopolyhedrovirus (SeMNPV) forms the basis for a number of bioinsecticidal products for control of the beet armyworm, S. exigua, that are marketed in the United States, parts of Europe, and several southern Asian countries (6,18,34). Recently, an SeMNPV isolate was successfully commercialized for use in biological pest control programs for the extensive greenhouse horticultural crops grown in Almería, southern Spain (20,21).…”

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confidence: 99%

Intra- and Intergenerational Persistence of an Insect Nucleopolyhedrovirus: Adverse Effects of Sublethal Disease on Host Development, Reproduction, and Susceptibility to Superinfection

Cabodevilla

Villar

Virto

et al. 2011

Appl Environ Microbiol

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Sublethal infections by qPCR analysis indicated a consistently higher prevalence of sublethal infection than RT-PCR.Sublethal infection was associated with significant reductions in pupal weight, adult emergence, fecundity, and fertility (egg hatch) and significant increases in larval development time and duration of the preoviposition period. Insects taken from a persistently infected experimental population were significantly more susceptible to the OB inoculum than control insects that originated from the same virus-free colony as the persistently infected insects. We conclude that OB treatment results in rapid establishment of sublethal infections that persist between generations and which incur costs in the development and reproductive capacity of the host insect.

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Field Evaluation of a Commercial Formulation of the Spodoptera exigua (Lepidoptera: Noctuidae) Nuclear Polyhedrosis Virus for Control of Beet Armyworm on Vegetable Crops in Thailand

Cited by 39 publications

References 0 publications

Efficacy ofSpodoptera exiguamultiple nucleopolyhedrovirus as a biological insecticide for beet armyworm control in greenhouses of southern Spain

Efficacy ofSpodoptera exiguamultiple nucleopolyhedrovirus as a biological insecticide for beet armyworm control in greenhouses of southern Spain

Natural populations of Spodoptera exigua are infected by multiple viruses that are transmitted to their offspring

Intra- and Intergenerational Persistence of an Insect Nucleopolyhedrovirus: Adverse Effects of Sublethal Disease on Host Development, Reproduction, and Susceptibility to Superinfection

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