Invasiveness, biology, ecology, and management of the fall armyworm, Spodoptera frugiperda

Entomologia Generalis, Journal Year: 2022, Volume and Issue: 43(2), P. 187 - 241

Published: Oct. 26, 2022

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Biology, invasion and management of the agricultural invader: Fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae)

Journal of Integrative Agriculture, Journal Year: 2021, Volume and Issue: 20(3), P. 646 - 663

Published: Feb. 16, 2021

The fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), is native to the Americas. It has rapidly invaded 47 African countries and 18 Asian since first detection of invasion into Nigeria Ghana in 2016. regarded as a super pest based on its host range (at least 353 plants), inherent ability survive wide habitats, strong migration ability, high fecundity, rapid development resistance insecticides/viruses gluttonous characteristics. inherently superior biological characteristics FAW contribute invasiveness. Integrated management (IPM) relied multiple applications monitoring scouting, agricultural control, chemical pesticides, viral insecticides, sex attractants, bio-control agents (parasitoids, predators entomopathogens) botanicals. Knowledge gaps remain be filled to: (1) understand invasive mechanisms S. frugiperda; (2) how prevent further spread (3) provide better strategies. This review summarizes characters FAW, their association with invasiveness IPM strategies, which may insights for future management.

Language: Английский

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Spodoptera frugiperda: Ecology, Evolution, and Management Options of an Invasive Species

Annual Review of Entomology, Journal Year: 2022, Volume and Issue: 68(1), P. 299 - 317

Published: Oct. 6, 2022

The fall armyworm (FAW), Spodoptera frugiperda (Lepidoptera, Noctuidae), is a well-known agricultural pest in its native range, North and South America, has become major invasive around the globe past decade. In this review, we provide an overview to update what known about S. geographic ranges. This followed by discussion of studies from invaded areas gain insights into frugiperda's ecology, specifically reproductive biology, host plant use, status insecticide resistance alleles, biocontrol methods regions. We show that reference strains uninformative populations because multidirectional introduction events likely underpinned recent rapid spread. Given genomic analyses FAW much more diverse than was previously assumed, natural selection forces differ geographically, region-specific approaches will be needed control global pest.

Language: Английский

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UDP-glycosyltransferases act as key determinants of host plant range in generalist and specialist Spodoptera species

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(19)

Published: April 29, 2024

Phytophagous insects have evolved sophisticated detoxification systems to overcome the antiherbivore chemical defenses produced by many plants. However, how these biotransformation differ in generalist and specialist insect species their role determining host plant range remains an open question. Here, we show that UDP-glucosyltransferases (UGTs) play a key of within Spodoptera genus. Comparative genomic analyses breadth identified relatively conserved number UGT genes but high levels gene pseudogenization picta . CRISPR-Cas9 knockouts three main clusters frugiperda revealed UGT33 important allowing this utilize poaceous plants maize, wheat, rice, while UGT40 facilitate utilization cotton. Further functional vivo vitro SfUGT33F32 as mechanism allows S. detoxify benzoxazinoid DIMBOA (2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one), potent insecticidal phytotoxin capacity is several species, , which specializes on Crinum plants, unable due nonfunctionalizing mutation SpUGT33F34 Collectively, findings provide insight into UGTs adaptation, mechanistic basis evolutionary transitions between generalism specialism offer molecular targets for controlling group notorious pests.

Language: Английский

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Genomic and transcriptomic analysis unveils population evolution and development of pesticide resistance in fall armyworm Spodoptera frugiperda

Protein & Cell, Journal Year: 2020, Volume and Issue: 13(7), P. 513 - 531

Published: Oct. 27, 2020

Abstract The fall armyworm (FAW), Spodoptera frugiperda , is a destructive pest native to America and has recently become an invasive insect in China. Because of its rapid spread great risks China, understanding FAW genetic background pesticide resistance urgent essential develop effective management strategies. Here, we assembled chromosome-level genome male (SFynMstLFR) compared re-sequencing results the populations from America, Africa, Strain identification 163 individuals collected Africa China showed that both C R strains were found American populations, while only strain was Chinese African populations. Moreover, population genomics analysis have close relationship with significantly differentiation Taken together, FAWs invaded into most likely originated Africa. Comparative displayed cytochrome p450 gene family extremely expanded 425 members FAW, which 283 genes are specific FAW. Treatments twenty-three pesticides variant patterns transcriptome profiles, several detoxification such as AOX UGT GST specially responded pesticides. These findings will be useful developing strategies for other areas.

Language: Английский

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Spread of invasive migratory pest Spodoptera frugiperda and management practices throughout China

Journal of Integrative Agriculture, Journal Year: 2021, Volume and Issue: 20(3), P. 637 - 645

Published: Feb. 16, 2021

The fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae), a notorious migratory pest native to tropical and subtropical America, invaded China in December 2018, then spread through 26 provinces (autonomous regions, municipalities) 2019 27 2020, damaging 1.125 1.278 million hectares of crops, respectively. Maize was the most severely affected crop, although wheat other plants were also ruined. Considering biological characteristics, incidence regularity migration patterns FAW populations, Chinese government implemented regional control strategy divided areas infested with into annual breeding grounds Southwest South China, transitional area Jiangnan Jianghuai key preventive Huang-Huai-Hai region North China. National Agro-Tech Extension Service Center constructed "the Information Platform for Prevention Control Fall Armyworm" at county level, which would entail people reporting mapping armyworm. According forecasting information, millions extension workers small-scale growers entire country rallied by local governments fight comprehensive tactics including chemical, physical, ecological measures. Thanks joint prevention control, final loss crops controlled within 5% total 2020. This review gives discussion on existing problems future management scenarios.

Language: Английский

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Fall armyworm invasion heightens pesticide expenditure among Chinese smallholder farmers

Journal of Environmental Management, Journal Year: 2021, Volume and Issue: 282, P. 111949 - 111949

Published: Jan. 13, 2021

Language: Английский

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Global population genomic signature of Spodoptera frugiperda (fall armyworm) supports complex introduction events across the Old World

Communications Biology, Journal Year: 2022, Volume and Issue: 5(1)

Published: April 7, 2022

Native to the Americas, invasive Spodoptera frugiperda (fall armyworm; FAW) was reported in West Africa 2016, followed by its chronological detection across Old World and hypothesis of an eastward Asia expansion. We explored population genomic signatures American FAW identified 12 maternal mitochondrial DNA genome lineages range. 870 high-quality nuclear single nucleotide polymorphic markers five distinct New clusters, broadly reflecting native geographical ranges absence host-plant preferences. unique admixed populations, non-admixed Asian individuals, all which suggested multiple introductions underpinning pest's global spread. Directional gene flow from East into eastern also detected, contrast west-to-east spread hypothesis. Our study demonstrated potential approaches via international partnership address emerging pest threats biosecurity challenges.

Language: Английский

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Parasitoid Distribution and Parasitism of the Fall Armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae) in Different Maize Producing Regions of Uganda

Insects, Journal Year: 2021, Volume and Issue: 12(2), P. 121 - 121

Published: Jan. 29, 2021

The fall armyworm (FAW) Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) has successfully invaded Africa, where it significantly impacted maize and sorghum production. Management of FAW in Africa predominantly relies on synthetic insecticides, which are expensive, negatively impact the environment beneficial insects. We, therefore, conducted field surveys Uganda 2017 2019 to identify egg larval parasitoids for possible use integrated pest management (IPM) programs. Parasitoids were identified by their mitochondrial DNA cytochrome c oxidase subunit 1 (mtCOI) gene sequences. We 13 parasitoid species belonging three families Hymenoptera: Platygastridae, Braconidae Ichneumonidae, as well one Dipteran family (Tachinidae). Coccygidium spp. Chelonus bifoveolatus most abundant widely distributed parasitoids. Overall, parasitism averaged 9.2% ranged from 3.1% 50% 2017, 0.8% 33% 2019. Parasitism Sturmiopsis parasitica, Diolcogaster sp., Cotesia flavipes crops reported first time. Our results suggest high biological diversity parasitoids, should be exploited IPM Uganda.

Language: Английский

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Complex multiple introductions drive fall armyworm invasions into Asia and Australia

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Jan. 12, 2023

The fall armyworm (FAW) Spodoptera frugiperda is thought to have undergone a rapid 'west-to-east' spread since 2016 when it was first identified in western Africa. Between 2018 and 2020, recorded from South Asia (SA), Southeast (SEA), East (EA), Pacific/Australia (PA). Population genomic analyses enabled the understanding of pathways, population sources, gene flow this notorious agricultural pest species. Using neutral single nucleotide polymorphic (SNP) DNA markers, we detected genome introgression that suggested most populations study were overwhelmingly C- R-strain hybrids (n = 252/262). SNP mitochondrial markers multiple introductions parsimoniously explained by anthropogenic-assisted spread, i.e., associated with international trade live/fresh plants plant products, involved 'bridgehead populations' countries enable successful establishment neighbouring countries. Distinct signatures between Myanmar China do not support 'African origin spread' nor 'Myanmar source China' hypotheses. Significant genetic differentiation different Australian states supported pathways involving distinct SEA populations. Our as biosecurity hotspot FAW melting pot, demonstrated use analysis disentangle preventable human-assisted unpreventable natural spread.

Language: Английский

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