Invasion of Fall Armyworm (&lt;I&gt;Spodoptera frugiperda&lt;/I&gt;) in India: Nature, Distribution, Management and Potential Impact

Sb, Suby; Soujanya, P. Lakshmi; Yadava, Pranjal; Patil, Jagadeesh; Subaharan, Kesavan; Gs, Prasad; Ks, Babu; Sl, Jat; Kr, Yathish; Vadassery, Jyothilakshmi; Vk, Kalia; Bakthavatsalam, N.; Jc, Shekhar; Rakshit, S

doi:10.18520/cs/v119/i1/44-51

Cited by 52 publications

(32 citation statements)

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“…It is a polyphagous pest that attacks more than 353 crop plants belonging to 76 families, 8 but causes significant damage in crops of Poaceae, particularly maize and sorghum 8,9 . It predominantly attacks maize, sorghum, millets and sugarcane in Asia 10,11 . This pest has already threatened Africa's food security, where maize is a staple food 12 .…”

Section: Introductionmentioning

confidence: 99%

Biocontrol potential of entomopathogenic nematodes for the sustainable management of Spodoptera frugiperda (Lepidoptera: Noctuidae) in maize

Patil

Linga

Rangasamy

et al. 2022

Pest Management Science

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BACKGROUND The occurrence of Spodoptera frugiperda (J.E. Smith) in Asia was reported for the first time from Karnataka in 2018. This pest is widely distributed in India, causing significant damage to maize. Management of this recent invasive pest in maize‐growing regions of India relies on chemical control. Resistance is the greatest obstacle to the successful use of chemical insecticides to control this pest. Indiscriminate use of chemical insecticides destroys beneficial natural enemies, therefore effective and sustainable alternative control strategies are needed. In this case, the use of biological control agents is the alternative option to mitigate this pest. Thus, this study aimed to select virulent entomopathogenic nematodes (EPNs) isolates based on the laboratory assay and further to test the efficacy of virulent isolates in the field conditions along with commonly used chemical insecticide emamectin benzoate against S. frugiperda. RESULTS Laboratory results revealed that both Heterorhabditis indica 1 NBAIIH38 and Steinernema carpocapsae NBAIRS59 caused 100% mortality in third‐ and fourth‐instar larvae of S. frugiperda, while these two species caused 85% and 72% mortality in pupae, respectively. When pupae of S. frugiperda were exposed to EPNs, pupae died after metamorphosis to malformed adults. All the nematode species were able to penetrate and reproduce within S. frugiperda larvae, but the reproduction rate for Heterorhabditids was higher than that of Steinernematids. Field trial results showed that H. indica 1 NBAIIH38 significantly reduced the number of larvae and leaf damage scores compared to S. carpocapsae NBAIRS59. Emamectin benzoate was more effective in reducing the larval population compared to EPN species. The cob yield was significantly higher in EPN‐ and emamectin benzoate‐treated plots than in untreated control plots. CONCLUSION Overall, these experiments suggest H. indica 1 NBAIIH38 is a promising biocontrol agent against S. frugiperda in maize production. © 2022 Society of Chemical Industry.

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Section: Introductionmentioning

confidence: 99%

Biocontrol potential of entomopathogenic nematodes for the sustainable management of Spodoptera frugiperda (Lepidoptera: Noctuidae) in maize

Patil

Linga

Rangasamy

et al. 2022

Pest Management Science

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“…The fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) is a phytophagous pest considered a major threat to agricultural production and food security (Early et al 2018;Tambo et al 2021), especially in developing countries (Devi 2018;FAO 2020;Suby et al 2020;Koffi et al 2020). The species is known to feed on more than 350 host plants including economically valuable crops such as maize, rice, soybean, sorghum, wheat, barley, and cotton (de Freitas Bueno et al 2011;Hardke et al 2015;Montezano et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Risk of establishment and potential impacts of transient populations of Spodoptera frugiperda in Europe

Gilioli

Sperandio

Simonetto

et al. 2022

Preprint

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The fall armyworm, Spodoptera frugiperda (J.E. Smith), is an invasive pest threatening crop production and food security worldwide. High concerns are linked to the potential establishment of the species in Europe. The high migratory capacity of S. frugiperda cause concerns about the potential impacts of transient populations invading new areas from suitable hotspots. In the present work, we developed and used a physiologically-based demographic model to quantitatively assess the risks of S. frugiperda in Europe. The risks were assessed considering a best-, a median-, and a worst-case scenario. The Mediterranean coastal areas of Southern Europe resulted suitable for the establishment of the species, with suitable areas reaching even higher latitudes, in the worst-case scenario. In Europe, up to 4 generations per year were predicted. The predicted average yearly adult population was 5 (± 4), 17 (± 5), and 139 (± 22) in the best, median-, and worst-case assessment scenario, respectively. Model results showed that Southern and Central Europe might be exposed to the risk of transient populations, at least up to the 48th parallel north, in the worst-case scenario. Depending on the latitude and on the period of arrival of the propagule, transient populations might be able to originate 1 or more generations per year. The model can be used to define strategies reducing the risks of establishment of the pest at the country level. Predictions on the dynamics and phenology of the pest can also be used to support its management at the local level.

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“…Despite this wide range of host plants, FAW is best known as one of the most important agricultural pests of grasses (maize, millet, rice and sorghum) and some cultivated dicots such as cotton (Barros et al, 2010). The FAW is native to the New World, but in the last few years has invaded Africa and further spread to Asia and Oceania (Goergen et al, 2016;Johnson, 1987;Otim et al, 2018;Piggott et al, 2021;Suby et al, 2020), Therefore, FAW is currently considered of a global concern due its polyphagy and capacity for rapid evolution of resistance to pesticides and Bt crops (Huang, 2021;Jakka et al, 2016), representing an imminent threat to food security and a source of significant economic losses.…”

Section: Introductionmentioning

confidence: 99%

Non-Targeted Metabolomics Reveal Differences in the Metabolic Profile of the Fall Armyworm Strains When Feeding Different Food Sources

Oliveira

Phelan

Labate

et al. 2022

Preprint

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Spodoptera frugiperda, the fall armyworm (FAW), is an important polyphagous agricultural pest feeding on nearly 350 host plants. FAW is undergoing incipient speciation with two well-characterized host-adapted strains, the "corn" (CS) and "rice" (RS) strains, which are morphologically identical but carry several genes under positive selection for host adaptation. We used non-targeted metabolomics based on gas chromatography/mass spectrometry to identify differences in metabolite profiles of the larval gut of CS and RS feeding on different host plants. Larvae were fed on artificial diet, maize, rice, or cotton leaves from eclosion to the sixth instar, when they had their midgut dissected for the analysis. This study revealed that the midgut metabolome of FAW varied due to larval diet and differed between the FAW host-adapted strains. Additionally, we identified several candidate metabolites that may be involved in the adaptation of CS and RS to their host plants. Our findings provide clues toward the gut metabolic activities of the FAW strains.

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Invasion of Fall Armyworm (<I>Spodoptera frugiperda</I>) in India: Nature, Distribution, Management and Potential Impact

Cited by 52 publications

References 0 publications

Biocontrol potential of entomopathogenic nematodes for the sustainable management of Spodoptera frugiperda (Lepidoptera: Noctuidae) in maize

Biocontrol potential of entomopathogenic nematodes for the sustainable management of Spodoptera frugiperda (Lepidoptera: Noctuidae) in maize

Risk of establishment and potential impacts of transient populations of Spodoptera frugiperda in Europe

Non-Targeted Metabolomics Reveal Differences in the Metabolic Profile of the Fall Armyworm Strains When Feeding Different Food Sources

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