First records of the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), in Senegal

Brévault, Thierry; Ndiaye, Awa; Badiane, Djibril; Bal, Amadou Bocar; Sembène, Mbacké; Silvie, Pierre; Haran, Julien

doi:10.1127/entomologia/2018/0553

Cited by 35 publications

(25 citation statements)

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“…The females lay eggs on abaxial leaf surfaces of host leaves and an individual adult can lay 100 to 200 eggs per egg mass (Kumela et al ., ). Immediately after hatching, neonates start feeding on the leaf which leads to complete skeletonization (Brévault et al ., ). Duration of larval stage (usually six instars) is about 14 days during the summer and may prolong to 30 days during cold weather and the last instar moves onto the ground and pupates (Sparks, ).…”

Section: Introductionmentioning

confidence: 97%

Initial detections and spread of invasive Spodoptera frugiperda in China and comparisons with other noctuid larvae in cornfields using molecular techniques

Jing

Guo

Jiang³

et al. 2019

Insect Science

156

109

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The fall armyworm, Spodoptera frugiperda, is a species native to the Americas and has spread to many countries in Africa and Asia in recent years. Proactive actions for potential invasion of S. frugiperda to China coordinated by government agencies and agricultural extension systems resulted in timely detection in January 2019 in Yunnan province neighboring onto Myanmar. The extensive monitoring in southern provinces of China since February 2019 resulted in dynamic tracking of S. frugiperda spreading to 13 provincial regions in China within 4 months by May 10, 2019, which is crucial for timely management actions in the fields. The first detections of S. frugiperda (corn strain) in China were confirmed using cytochrome oxidase subunit 1 (CO1) and triosephosphate isomerase (Tpi) genes molecular marker method. In addition to S. frugiperda, larvae of three other noctuid species with similar morphological appearance (S. litura, S. exigua and Mythimna separata) can occur simultaneously and cause similar damage in cornfields in southern China. Thus, we can use both morphological and molecular marker methods to compare larval stages of four noctuid species. Further, we discuss the risk of potential spread of invasive S. frugiperda to other regions and impact on corn production in China.

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Section: Introductionmentioning

confidence: 97%

Initial detections and spread of invasive Spodoptera frugiperda in China and comparisons with other noctuid larvae in cornfields using molecular techniques

Jing

Guo

Jiang³

et al. 2019

Insect Science

156

109

View full text Add to dashboard Cite

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“…The analysis of DNA from fecal samples of the Mauritian tomb bat revealed a diet mainly composed of moths (79% of total species detected), as shown by Kingdon (1974) [63], of which two species of the genus Achyra were dominant (81 out of 103 prey taxa). The majority of Lepidopteran pests identified are among the most economically important crop pests in Senegal, including armyworms (Spodoptera spp., see [64][65][66]) and earworms (Helicoverpa armigera, see [67]). As expected, DNA of the main pest of pearl millet, the millet head miner, was detected (8% of positive samples).…”

Section: Diet Composition Of Insectivorous Vertebratesmentioning

confidence: 99%

DNA Metabarcoding as a Tool for Disentangling Food Webs in Agroecosystems

Sow

Haran

Benoit

et al. 2020

Insects

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Better knowledge of food webs and related ecological processes is fundamental to understanding the functional role of biodiversity in ecosystems. This is particularly true for pest regulation by natural enemies in agroecosystems. However, it is generally difficult to decipher the impact of predators, as they often leave no direct evidence of their activity. Metabarcoding via high-throughput sequencing (HTS) offers new opportunities for unraveling trophic linkages between generalist predators and their prey, and ultimately identifying key ecological drivers of natural pest regulation. Here, this approach proved effective in deciphering the diet composition of key predatory arthropods (nine species.; 27 prey taxa), insectivorous birds (one species, 13 prey taxa) and bats (one species; 103 prey taxa) sampled in a millet-based agroecosystem in Senegal. Such information makes it possible to identify the diet breadth and preferences of predators (e.g., mainly moths for bats), to design a qualitative trophic network, and to identify patterns of intraguild predation across arthropod predators, insectivorous vertebrates and parasitoids. Appropriateness and limitations of the proposed molecular-based approach for assessing the diet of crop pest predators and trophic linkages are discussed.

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“…There is a dire need of longterm solutions and remediations to this deleterious invasive pest, which has presently affected more than 80 different crops including grasses and legumes (Food and Agriculture Organization of the United Nations, 2018; Nagoshi et al, 2018;Prasanna et al, 2018;Toepfer et al, 2018). Though fall armyworm has its origin in the tropical regions of the Western hemisphere, it has now become a hostile pest of significant economic importance in African and Asian countries (Brévault et al, 2018;Chen et al, 2019;Kalleshwaraswamy et al, 2019;Nagoshi et al, 2017;Nagoshi et al, 2018;Otim et al, 2018). It was first reported in Nigeria in 2016 (Goergen et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Genetic Variability and Seasonal Influence of Fall Armyworm (Spodoptera Frugiperda (J. E. Smith)) Damage to Early Vegetative Growth of African Maize Accessions in the Humid Tropics of South-Eastern Nigeria

2020

THE JAPS

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Fall armyworm (Spodoptera frugiperda (J. E. Smith)) (FAW) is a petrifying invasive pest of maize (Zea mays L.) in Africa. Ten tropical maize accessions from the International Plant Genetic Resources Institute (IPGRI) collections and a check (Ikom White variety) were studied, under rainfed conditions, in a multi-environment trial (MET) to assess their responses to natural infestation of FAW. The study was conducted in the 2018 first and second maize cropping seasons in Cross River State, Nigeria using a genotype x season interaction (GSI) model. The combined analyses of variance showed non-significant difference (p > 0.05) for genotypes and significant (p ≤ 0.05) genotype x season interactions for seedling emergence, plant height, number of leaves, leaf area and FAW infestation. The most FAW-damaged maize accession in this study was TZm-304 while TZm-1427 was the least FAW-damaged maize accession. Overall, FAW infestation was significantly (p ≤ 0.01) higher in the second maize cropping season (Akpabuyo) than in first maize cropping season (Calabar). This subsequently led to corresponding decreases in early vegetative growth in the second maize cropping season. The IPGRI African maize accessions evaluated in this study were all susceptible to FAW damage at their early vegetative growth stages. However, the infestation dynamics of FAW on maize in Africa is presently being understudied. Thus, there is a dire need for the adoption of a genotype x location x year (GLY) model in subsequent MET studies on FAW across all maize-growing States in Nigeria and selection for maize genotypes in breeding for resistance to FAW should consider early vegetative growth stage and initial establishments in the field as useful aids to selection.

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First records of the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), in Senegal

Cited by 35 publications

References 0 publications

Initial detections and spread of invasive Spodoptera frugiperda in China and comparisons with other noctuid larvae in cornfields using molecular techniques

Initial detections and spread of invasive Spodoptera frugiperda in China and comparisons with other noctuid larvae in cornfields using molecular techniques

DNA Metabarcoding as a Tool for Disentangling Food Webs in Agroecosystems

Genetic Variability and Seasonal Influence of Fall Armyworm (Spodoptera Frugiperda (J. E. Smith)) Damage to Early Vegetative Growth of African Maize Accessions in the Humid Tropics of South-Eastern Nigeria

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