Status and control measures of fall armyworm (<i>Spodoptera frugiperda</i>) infestations in maize fields in Ethiopia: A review

Assefa, Fenta; Ayalew, Dereje

doi:10.1080/23311932.2019.1641902

Cited by 84 publications

(103 citation statements)

References 60 publications

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“…Indeed a meteorological data-based simulation study (i.e., wind currents, monsoon wind patterns) concluded the Yunnan FAW populations originated from Myanmar, consistent with FAW being officially reported earlier in Myanmar (December 2018 48,49 ) than in China (January 2019 35 ). Other work has examined the impact and implications for global plant health and agricultural biosecurity (e.g., 28,50 ), integrated pest management (IPM) and bioeconomics 51–53 , and insecticide resistance 37,45,54 .…”

Section: Introductionmentioning

confidence: 99%

Global FAW population genomic signature supports complex introduction events across the Old World

Tay

Rane

Padovan

et al. 2020

Preprint

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Accurate genomic knowledge can elucidate the global spread patterns of invasive pests. The highprofile invasive agricultural pest Spodoptera frugiperda (fall armyworm; FAW) is a case in point. Native to the Americas, the FAW was first reported in West Africa in 2016 and has rapidly spread to over 64 countries across the Old World, resulting in significant economic losses. The chronological order of reported detections has led to the hypothesis that the FAW moved eastwards across Africa and then Asia, however genomic evidence remains lacking to test this hypothesis and to identify the potential origin of invasive populations. Using a whole genome sequencing approach, we explored the population genomic signatures of FAW populations from the Americas and the Old World. Analyses of complete mitochondrial DNA genomes identified 12 maternal lineages across the invasive range, while genomic signatures from 870 high-quality nuclear genome-wide single nucleotide polymorphic (SNP) DNA markers identified five distinct New World populations that broadly reflected their native geographical ranges and absence of host-plant preference status. Unique FAW populations in the Old World were also identified that suggested multiple introductions underpinned their rapid global spread. We identified in Asian FAW individuals, genomes lacking evidence of admixture; while analysis of identified complex substructure revealed significant directional geneflow from Asia into East Africa, in contrast to a simple east-towest spread. Our study highlights the need for population genomics approaches in analysing complex pest invasions, and the importance of international partnership to address global biosecurity challenges presented by emerging high priority insect pests. Correspondence

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Section: Introductionmentioning

confidence: 99%

Global FAW population genomic signature supports complex introduction events across the Old World

Tay

Rane

Padovan

et al. 2020

Preprint

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“…These have also been observed to control FAW in some farmers’ fields in Africa (FAO, 2018c). Assefa and Ayalew (2019) reported that FAW was susceptible, in the Americas, to 16 species of entomopathogens, mainly viruses and bacteria. They highlighted that the occurrence and distribution of bio‐control agents, including entomopathogens, was dependent on their habit and determined by geographical location, agricultural practices, and insecticide use.…”

Section: Fall Armyworm Control Strategies: Past and Presentmentioning

confidence: 99%

Fall‐armyworm invasion, control practices and resistance breeding in Sub‐Saharan Africa

Matova

Kamutando

Magorokosho³

et al. 2020

Crop Science

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Fall armyworm [Spodoptera frugiperda (J.E. Smith); FAW] invasion has exacerbated maize (Zea mays L.) crop yield losses in sub‐Saharan Africa (SSA), already threatened by other stresses, especially those that are climate‐change induced. The FAW is difficult to control, manage, or eradicate, because it is polyphagous and trans‐boundary, multiplies fast, has a short life cycle and migrates easily, and lacks the diapause growth phase. In this study, FAW and its impact in Africa was reviewed, as well as past and present control strategies for this pest. Pesticides, cultural practices, natural enemies, host‐plant resistance, integrated pest management (IPM), and plant breeding approaches were examined as possible control strategies. It was concluded that an IPM control strategy, guided by cultural approaches already being used by farmers, and what can be adopted from the Americas, coupled with an insect‐resistance management strategy, is the best option to manage this pest in Africa. These strategies will be strengthened by breeding for multi‐trait host‐plant resistance through stacking of genes for different modes of control of the pest.

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“…This distribution showed that the extent of FAW infestation in the area is very high, an observation that was also made by Fugar (2019). Assefa and Ayalew (2019) explained that FAW is a major threat to maize production because of its rapid breeding and migration capabilities. It is important to note that the infection discussed in this study does not account for the specific area of the plant that is infested.…”

Section: Faw Infestation and Level Of Infestationmentioning

confidence: 99%

“…Contrary to this study, Tambo et al (2019) and Kansiime et al (2019) respectively had estimated that only about 49% and 60% of farmers in their studies had used pesticides in the control of FAW. Assefa and Ayalew (2019) expressed that although the control of FAW is achievable through the use of chemicals, there are challenges to cost, environmental contamination and the possibility of the resurgence of the worm. Assefa and Ayalew (2019) further stressed that the timing in the application of chemicals is crucial to achieve the objective of controlling FAW.…”

Section: Faw Mitigation Strategies Adopted By Farmersmentioning

confidence: 99%

Prevalence, effects and management of fall army worm in the Nkoranza South Municipality, Bono East region of Ghana

Bariw

Kudadze

Adzawla

2020

Cogent Food & Agriculture

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Status and control measures of fall armyworm (Spodoptera frugiperda) infestations in maize fields in Ethiopia: A review

Cited by 84 publications

References 60 publications

Global FAW population genomic signature supports complex introduction events across the Old World

Global FAW population genomic signature supports complex introduction events across the Old World

Fall‐armyworm invasion, control practices and resistance breeding in Sub‐Saharan Africa

Prevalence, effects and management of fall army worm in the Nkoranza South Municipality, Bono East region of Ghana

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