Levantamento dos inimigos naturais da lagarta do cartucho do milho, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae), na região de Cascavel, PR

Valicente, Fernando Hercos; Barreto, Marliton Rocha

doi:10.1590/s0301-80591999000200018

Cited by 21 publications

(9 citation statements)

References 6 publications

(3 reference statements)

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“…chalcites larvae on the islands of Tenerife, La Palma, Gran Canaria and El Hierro, overall 2.5% died due to lethal polyhedrosis disease [ 5 ]. This rather low prevalence of enzootic infection is similar to that reported in other nucleopolyhedrovirus pathosystems such as the nucleopolyhedrovirus of Spodoptera frugiperda (SfMNPV) on maize in Mexico [ 17 ], Colombia [ 18 ] or Brazil [ 19 ]. In contrast, high prevalence of infection and, on occasions, epizootics of lethal disease, have been detected in other nucleopolyhedrovirus-insect pathosystems, particularly in high density insect populations [ 20 – 22 ].…”

Section: Discussionsupporting

confidence: 83%

Chrysodeixis chalcites nucleopolyhedrovirus (ChchNPV): Natural occurrence and efficacy as a biological insecticide on young banana plants in greenhouse and open-field conditions on the Canary Islands

et al. 2017

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Chrysodeixis chalcites, an important pest of banana crops on the Canary Islands, is usually controlled by chemical insecticides. The present study aimed to evaluate the efficacy of the most prevalent isolate of the Chrysodeixis chalcites nucleopolyhedrovirus (ChchNPV, Baculoviridae) as a biological insecticide. Overall the prevalence of ChchNPV infection in C. chalcites populations was 2.3% (103 infected larvae out of 4,438 sampled), but varied from 0–4.8% on Tenerife and was usually low (0–2%) on the other islands. On Tenerife, infected larvae were present at 11 out of 17 plantations sampled. The prevalence of infection in larvae on bananas grown under greenhouse structures was significantly higher (3%) than in open-field sites (1.4%). The ChchNPV-TF1 isolate was the most abundant and widespread of four genetic variants of the virus. Application of 1.0x109 viral occlusion bodies (OBs)/l of ChchNPV-TF1 significantly reduced C. chalcites foliar damage in young banana plants as did commonly used pesticides, both in greenhouse and open-field sites. The insecticidal efficacy of ChchNPV-TF1 was similar to that of indoxacarb and a Bacillus thuringiensis (Bt)-based insecticide in one year of trials and similar to Bt in the following year of trails in greenhouse and field crops. However, larvae collected at different time intervals following virus treatments and reared in the laboratory experienced 2–7 fold more mortality than insects from conventional insecticide treatments. This suggests that the acquisition of lethal dose occurred over an extended period (up to 7 days) compared to a brief peak in larvae on plants treated with conventional insecticides. These results should prove useful for the registration of a ChchNPV-based insecticide for integrated management of this pest in banana crops on the Canary Islands.

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Section: Discussionsupporting

confidence: 83%

Chrysodeixis chalcites nucleopolyhedrovirus (ChchNPV): Natural occurrence and efficacy as a biological insecticide on young banana plants in greenhouse and open-field conditions on the Canary Islands

et al. 2017

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“…Campoletis flavicincta (Ashmead, 1890) (Hymenoptera: Ichneumonidae) (Cruz et al, 1997;Matos Neto et al, 2004a, Eiphosoma laphygmae Costa Lima, 1953 (Hymenoptera: Ichneumonidae), Ophion flavidus Brullé, 1846 (Hymenoptera: Ichneumonidae) , Exasticolus fuscicornis (Cameron, 1887) (Hymenoptera: Braconidae) (Figueiredo et al, 2006a;Penteado-Dias et al, 2006), Colpotrochia mexicana (Cresson, 1868) (Hymenoptera: Ichneumonidae) and Cotesia flavipes (Cameron, 1891) (Hymenoptera: Braconidae) , as well as Winthemia trinitatis Thompson, 1963 (Diptera: Tachinidae) (Valicente and Barreto, 1999), operate exclusively on the larval stage of the host. There are also species that parasitise the larval stage of the pest, but only cause mortality of the insect host in its pupal stage, such as Archytas marmoratus (Townsend, 1915) (Diptera: Tachinidae) (Gross and Young, 1984).…”

Section: Discussionmentioning

confidence: 99%

First report of Dolichozele koebeleiViereck, 1911 (Hymenoptera: Braconidae) on larvae of Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) in maize (Zea maysL.) under different cropping systems

Cruz

Penteado-Dias

2014

Braz. J. Biol.

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In the context of the modern agriculture, pest control is important in order to increase productivity in maize (Zea mays L.). However, this control should be done rationally, prioritising environmentally safer methods such as biological control. This paper aims to report the occurrence of Dolichozele koebelei Viereck, 1911 (Hymenoptera: Braconidae) in Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) larvae collected in maize subjected to different cropping systems. The experiment was conducted at the Centro Nacional de Pesquisa de Milho e Sorgo (CNPMS) in Sete Lagoas, Minas Gerais State, Brazil, using organic and conventional production. Ten plants were sampled from each of the 24 plots and for each production system, three times a week during the entire cycle of maize (variety BR 106). In the laboratory, larvae were distributed in individual rearing containers with artificial diet until the end of the biological cycle. An increased number of S. frugiperda larvae was observed in organic single crop maize; hence a higher percentage of S. frugiperda larvae parasitised by Hymenoptera and Diptera also occurred in the maize under this production system. Dolichozele koebelei had not yet been described in association with larvae of S. frugiperda. The percentage of parasitism of S. frugiperda larvae was high in both experiments, indicating the importance of natural control agents in reducing the population density of S. frugiperda, and especially the importance of an appropriate crop management.Keywords: agroecosystem, biological control, fall armyworm, parasitoid, Macrocentrinae. Palavras-chave: agroecossistema, controle biológico, lagarta-do-cartucho, parasitoide, Macrocentrinae. Primeira ocorrência de

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“…Cruz et al (2002) studied the effect of a nuclear polyhedrosis virus (isolate 18) on S. frugiperda larvae, its damage and yield of maize crop. Valicente & Barreto (1999) reported many baculovirus isolates and parasitoids during a survey in Cascavel region, Paraná State, Brazil. The 22 Baculovirus isolates found in these two surveys compose the Baculovirus Bank belonging to the Embrapa Maize and Sorghum Research Center.…”

Section: Novo Isolado De Baculovírus Que Não Causa Liquefação Do Intementioning

confidence: 99%

A New Baculovirus Isolate that does Not Cause the Liquefaction of the Integument in Spodoptera frugiperda Dead Larvae

Valicente¹,

Tuelher²,

Paiva³

et al. 2008

Revista Brasileira de Milho e Sorgo

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The large-scale production of Baculovirus to control fall armyworm, Spodoptera frugiperda, presents many limitations. The most important limiting factor is that the baculovirus, which infects fall armyworm, causes liquefaction of the integument immediately after death. This disruption of the integument difficultates the large scale production because dead insect must be frozen before being harvested. This fact implies in high lab work need, increasing the cost of the biopesticide. This problem was overcome by the discovery of a new baculovirus nucleopolyhedrovirus (NPV) isolate in Cascavel/PR, that doesn't cause liquefaction of the integument (isolate 6NR) immediately after the insect death. This is an extremely important factor in a large-scale baculovirus production. In addition, mortality caused by isolate 6NR on 6-day-old-larvae was above 93% (SEM=0.7%), the average weight dead larva was 116.21 mg (SEM=22.9), the larval equivalent and weight equivalent/ha were 15.04 g (SEM=1.2) and 140.32 larvae (SEM=20.1), respectively.

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Levantamento dos inimigos naturais da lagarta do cartucho do milho, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae), na região de Cascavel, PR

Cited by 21 publications

References 6 publications

Chrysodeixis chalcites nucleopolyhedrovirus (ChchNPV): Natural occurrence and efficacy as a biological insecticide on young banana plants in greenhouse and open-field conditions on the Canary Islands

Chrysodeixis chalcites nucleopolyhedrovirus (ChchNPV): Natural occurrence and efficacy as a biological insecticide on young banana plants in greenhouse and open-field conditions on the Canary Islands

First report of Dolichozele koebeleiViereck, 1911 (Hymenoptera: Braconidae) on larvae of Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) in maize (Zea maysL.) under different cropping systems

A New Baculovirus Isolate that does Not Cause the Liquefaction of the Integument in Spodoptera frugiperda Dead Larvae

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