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98 results for “Spodoptera frugiperda”
Raw Data for Publication "Desmodium Volatiles in "Push-Pull" Cropping Systems and Protection Against the Fall Armyworm, Spodoptera frugiperda"
<p>This repository contains all raw and processed data related to the publication titled "Desmodium Volatiles in "Push-Pull" Cropping Systems and Protection Against the Fall Armyworm, Spodoptera frugiperda" written by Daria M. Odermatt, Frank Chidawanyika, Daniel M. Mutyambai, Bernhard Schmid, Luiz A. Domeignoz-Horta, Collins O. Onjura, Amanuel Tamiru and Meredith C. Schuman.</p> <p>The data is subdivided in four sections:</p> <ol> <li>Volatile sampling of Desmodium intortum, D. incanum, and maize headspaces</li> <li>Oviposition bioassays comparing moth egg-laying preferences on maize vs. Desmodium (direct and indirect exposure)</li> <li>Choice assays evaluating moth behavior in response to maize alone vs. maize with Desmodium volatiles</li> <li>No-choice assays evaluation moth attraction toward maize alone, maize + D. intortum and maize + D. incanum</li> </ol> <p>More detailed information is available in the README files located within each folder.</p>
Fig. 1 in Mortality and food consumption in Spodoptera frugiperda (Lepidoptera: Noctuidae) larvae treated with spinosad alone or in mixtures with a nucleopolyhedrovirus
Fig. 1. Percentage (mean ± SE) of leaf area consumed per surviving Spodoptera frugiperda 3rd instar feeding either on untreated maize-leaf pieces or on maizeleaf pieces treated with spinosad (mg/L). Mortality was recorded at 72 h afer treatment. Different letters above the error bars indicate statistically significant differences based on the Kruskall-Wallis test (P <0.05).
Fig. 1 in Population variability of Spodoptera frugiperda (Lepidoptera: Noctuidae) in maize (Poales: Poaceae) associated with the use of chemical insecticides
Fig. 1. Spodoptera frugiperda populations in cultivated maize in various parts of Mexico from which larvae were collected to study molecular genetic variation.
Fig. 2 in Population variability of Spodoptera frugiperda (Lepidoptera: Noctuidae) in maize (Poales: Poaceae) associated with the use of chemical insecticides
Fig. 2. Dendrogram of genetic distance among Spodoptera frugiperda populations analyzed using ISSR molecular markers.
Figure 2 in A 6-year field monitoring of fall armyworm, Spodoptera frugiperda, in transgenic Bt maize in Brazil
Figure 2 Average number of fall armyworm larvae, Spodoptera frugiperda, collected in Bt hybrids, non-Bt hybrids and non-Bt hybrids sprayed with methomyl in 2015 and 2016 (period II), in Sete Lagoas and Nova Porteirinha. Average followed by the same upper-case letter between municipalities and same lower-case letter in each municipality do not differ statistically (Scott-Knott test at p ≤ 0.05).
Figure 1 in A 6-year field monitoring of fall armyworm, Spodoptera frugiperda, in transgenic Bt maize in Brazil
Figure 1 Average number of fall armyworm larvae, Spodoptera frugiperda collected in Bt hybrids, non-Bt hybrids and non-Bt hybrids sprayed with methomyl from 2011 to 2014 (period I), in Sete Lagoas and Nova Porteirinha. Average followed by the same upper-case letter between municipalities and same lower-case letter in each municipality do not differ statistically (Scott-Knott test at p ≤ 0.05).
Figure 2 in First report of Spodoptera frugiperda (Lepidoptera: Noctuidae) on Onion (Allium cepa L.) in South Kivu, Eastern DR Congo
Figure 2 Mean (±S.E) incidence of Spodoptera frugiperda in onion as a function of season and cropping system. 24 plots were considered in each cropping system. A and B represents the incidence in 2019 and 2020 respectively.
Figure 1 in First report of Spodoptera frugiperda (Lepidoptera: Noctuidae) on Onion (Allium cepa L.) in South Kivu, Eastern DR Congo
Figure 1 Spodoptera frugiperda larvae occurring in the onion crop at the experimental site. A: lesions induced on onion leaf epidermis; B: sixth instar larvae found inside onion leaves; C: severity of damage and faecal pellets in whorl of the onion plant; D: fifth instar larva found on the onion plant.
Figure 4 in First report of Spodoptera frugiperda (Lepidoptera: Noctuidae) on Onion (Allium cepa L.) in South Kivu, Eastern DR Congo
Figure 4 Rates of attack severity of Spodoptera frugiperda according the kind of onion crops. A and B: severity in 2019 and in 2020 respectively. 0: no visible leaf damage; 1: small lesions on leaf epidermis; 2: Small elongated (rectangular shaped) lesions (5) of up to 1.3 cm in length on leaf epidermis; 3: Several small to mid-sized 1.3 to 2.5 cm in length elongated lesions (5-10) on several leaves; 4: Several large elongated lesions (˃10), greater than 2.5 cm in length present on several leaves; 5: leaves almost completely destroyed.
Figura 2 in Quimigación y bio-irrigación con pivote central para el control de Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) en maíz en el Caribe seco colombiano
Figura 2. Número promedio de larvas vivas de S. frugiperda por metro lineal a lo largo de 43 dÍas de desarrollo del cultivo de maÍz, según los tratamientos evaluados. / Average number of live S. frugiperda larvae per linear meter over 43 days of development of the corn crop, according to the treatments evaluated.
Figura 3 in Quimigación y bio-irrigación con pivote central para el control de Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) en maíz en el Caribe seco colombiano
Figura 3. Rendimiento de forraje fresco y seco de maÍz (t/ha) entre los diferentes tratamientos evaluados, para el control de S. frugiperda. No se evidenciaron diferencias significativas entre tratamientos usando la prueba de comparación múltiple de Tukey (α = 0,05). / Yield of fresh and dry maize forage (t/ha) between the different treatments evaluated, for the control of S. frugiperda. No significant differences were found between treatments using Tukey's multiple comparison test (α = 0.05).
Figura 1 in Quimigación y bio-irrigación con pivote central para el control de Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) en maíz en el Caribe seco colombiano
Figura 1. Nivel de daño visual causado por S. frugiperda en maÍz según la escala de Davis. 1a-1c. Daño foliar leve. 1d-1f. Daño foliar moderado. 1g-1h. Daño foliar severo. 1i. Planta destruida. Adaptado de: MRI - IRAC (2019). / Level of visual damage caused by S. frugiperda in corn according to the Davis scale. 1a-1c. Slight foliar damage. 1d-1f. Moderate leaf damage. 1g-1h. Severe leaf damage. 1i. Destroyed plant. Adapted from: MRI - IRAC (2019).
Figure 1 in Resistance of rice genotypes to fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae)
Figure 1 Dendrogram resulting from UPGMA multivariate cluster analysis (Euclidian distance), based on the length of larval, pre-pupal, pupal periods and total cycle (days) and total viability (%) and parameters of nutritional indices (Table 4 and Table 5) on rice genotypes for resistance to Spodoptera frugiperda (Lepidoptera: Noctuidae).Urutaí, GO, Brazil.
Fig 5 in Monitoring Spodoptera frugiperda in Benin: assessing the influence of trap type, pheromone blends, and habitat on pheromone trapping
Fig 5. Phylogenetic tree based on a portion of the COI barcoding segment showing the relationships of selected non-target moth specimens (g54xxx) isolated from fall armyworm pheromone traps relative to selected GenBank sequences. GenBank sequences are indicated by species name followed by accession number. Fall armyworm R-strain and fall armyworm C-strain are consensus sequences for the 2 fall armyworm host strains.
Fig 3 in Monitoring Spodoptera frugiperda in Benin: assessing the influence of trap type, pheromone blends, and habitat on pheromone trapping
Fig 3. Field screening of home-made trap design (Jar2 and Jar4) in comparison to Unitrap model using pheromone lures (all combined) over 2 maize cropping systems (maize monoculture and maize-cowpea intercrops) during the second planting season. The traps were installed on 30 Sep 2019 during the second maize growing season, and the moth collection period covered Oct to Dec. The data denotes average numbers per trap type for overall 3-d intervals moth collections with standard errors.
Fig 2 in Monitoring Spodoptera frugiperda in Benin: assessing the influence of trap type, pheromone blends, and habitat on pheromone trapping
Fig 2. Preliminary field test of pheromone traps using the 2-component fall armyworm pheromone PSU lure during the first maize growing season: comparison between home-made Jar2 trap and Unitrap model (A) (average number per trap type for overall weekly moth collections; error bars represent standard error and different lowercase letters denote statistical difference), and fluctuation in moth trap catch of the Unitrap-2-component lure combination (B) (moth collections were done every 3 d).
Fig 4 in Monitoring Spodoptera frugiperda in Benin: assessing the influence of trap type, pheromone blends, and habitat on pheromone trapping
Fig 4. Moth trap catch of 3 pheromone lures over 2 cropping systems (maize monoculture and maize-cowpea intercrops) using Unitraps. The traps were installed on 30 Sep 2019 during the second maize growing season and allowed to collect moths Oct to Dec 2019. The 4-component lure type (4C) contained Z9-14:Ac (78.3%), (Z)-11-hexadecenyl acetate (Z11-16:Ac) (3.6%), Z7-12:Ac (11.2%), and (Z)-9-dodecenyl acetate (Z9-12:Ac) (7.0%); whereas the 3-component lure type (3C) was composed of Z9-14:Ac (66.1%), Z11-16:Ac (4.7%), and Z7-12:Ac (29.3%); and the 2-component lure type (2C) of Z9-14:Ac (90.5%) and Z7-12:Ac (9.5%). The data represents average numbers for overall 3-d intervals moth collections.
Fig 1 in Monitoring Spodoptera frugiperda in Benin: assessing the influence of trap type, pheromone blends, and habitat on pheromone trapping
Fig 1. Traps used in study: commercially available Unitrap (A); home-made Jar2 trap constructed from 2 L plastic jar (B). The Jar2 trap was designed by G.T. TepaYotto and J.K. Winsou.
Fig. 3 in Toxicicity and histological changes caused by insecticides in Spodoptera frugiperda (Lepidoptera: Noctuidae) eggs
Fig. 3. Spodoptera frugiperda eggs treated with methomyl novaluron at 72, 96, 120, and 144 h. (A, B) Embryo showing differentiated regions at 72 and 96 h (circle). (C) Embryo at 120 h showing cuticle (ct), midgut (td), and muscle (m) formation. (D) Embryo at 144 h showing muscle (m) and cuticle (ct) formation.
Fig. 2 in Toxicicity and histological changes caused by insecticides in Spodoptera frugiperda (Lepidoptera: Noctuidae) eggs
Fig. 2. Spodoptera frugiperda eggs from the control group at 72 and 96 h (A, B). Eggs treated with α-cypermethrin at 72 and 96 h (C, D). (A) Eggs from the control group at 72 h showing vitellum (v), cuticle (arrow), chorion (circle), and muscle (m) formation. (B) Eggs at 96 h showing embryo with developed striated muscle (m) cuticle (arrow), complete digestive (td) and central nervous systems (supraesophageal ganglion) (sn). (C) Differentiated embryo (circle) at 72 h. (D) Differentiated embryo at 96 h occupying the internal space of the egg, showing normal midgut (td) cells, cuticle (arrow) and advanced stage of muscle development (m).
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