Visual and Gustatory Responses of<i>Spodoptera frugiperda</i>(Lepidoptera: Noctuidae) Larvae to Artificial Food Dyes

Villegas-Mendoza, Jesús M.; Rosas-García, Ninfa M.

doi:10.1653/024.096.0350

Cited by 5 publications

(2 citation statements)

References 18 publications

(20 reference statements)

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“…The collected larvae were transferred to the Tropical Agriculture Laboratory (rearing room) for the rearing of the stock colony under the laboratory climatic conditions. The larvae were individually placed in 6 cm Petri dishes and fed with an artificial diet [11] until pupation. Emerged adults were then paired inside acrylic cages (21H × 20W × 30L cm) with a nylon mesh cover for proper ventilation to the moths.…”

Section: Fall Armyworm Colonymentioning

confidence: 99%

Life Table Study of Fall Armyworm (Spodoptera frugiperda) (Lepidoptera: Noctuidae) on Three Host Plants under Laboratory Conditions

Chen

Itza

Kafle

et al. 2023

Insects

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After being discovered in Taiwan for the first time in June 2019, the polyphagous invasive fall armyworm (FAW), Spodoptera frugiperda (Lepidoptera: Noctuidae), has since spread throughout the entire nation. In Taiwan, this insect has a significant impact on the quality and output of wheat, corn, sorghum, and millet. It may further infest more crops in Taiwan due to its diverse range of hosts and alternate hosts. Maize and other staple crops have already been the subject of several study. The biology of FAW has not yet been studied in relation to the alternative hosts, particularly those commonly found in Taiwanese farmlands. Therefore, this study proposed to investigate the effects of napier grass (Pennisetum purpureum), natal grass (Melinis repens), and sunn hemp (Crotalaria juncea) on the development, reproduction, survivorship, and population growth of FAW under laboratory conditions. According to the results, the developmental duration was considerably the shortest when FAW was reared on sunn hemp while the longest on natal grass. Furthermore, female adults reared on napier grass had a longer adult pre-oviposition period, total pre-oviposition period, oviposition period, longevity, highest fecundity, and highest net reproductive rate (Ro: 465.12). Among the tested three alternative host plants evaluated, sunn hemp had the highest intrinsic rate of increase (r: 0.1993), finite rate of increase (λ: 1.2206), and shortest mean generation time (T: 29.98). Therefore, this study suggests that all hosts plants can contribute to the development and outbreak of this pest in the absence of its primary host; however, sunn hemp was a relatively more suitable host plant for this insect. The possibilities for the FAW’s growth and development vary depending on the host plant. Thereby, all potential host plants in the area should be extensively examined while developing an IPM program against FAW.

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Section: Fall Armyworm Colonymentioning

confidence: 99%

Life Table Study of Fall Armyworm (Spodoptera frugiperda) (Lepidoptera: Noctuidae) on Three Host Plants under Laboratory Conditions

Chen

Itza

Kafle

et al. 2023

Insects

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“…Manduca sexta and Spodoptera frugiperda insect colonies were reared on artificial diets ( Bell and Joachim, 1976 ; Villegas-Mendoza and Rosas-García, 2013 ), under controlled conditions of relative humidity (70–80%), temperature (25 ± 2°C) and photoperiod (10 h/14 h, light/dark). Bioassays were performed with neonate larvae using six different doses of the spore/crystal mixture that were poured on the surface of the diet.…”

Section: Methodsmentioning

confidence: 99%

Whole Genome Sequencing Analysis of Bacillus thuringiensis GR007 Reveals Multiple Pesticidal Protein Genes

et al. 2021

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Bacillus thuringiensis (Bt) are soil ubiquitous bacteria. They produce a great variability of insecticidal proteins, where certain of these toxins are used worldwide for pest control. Through their adaptation to diverse ecosystems, certain Bt strains have acquired genetic mobile elements by horizontal transfer, harboring genes that encode for different virulent factors and pesticidal proteins (PP). Genomic characterization of Bt strains provides a valuable source of PP with potential biotechnological applications for pest control. In this work, we have sequenced the complete genome of the bacterium Bt GR007 strain that is toxic to Spodoptera frugiperda and Manduca sexta larvae. Four replicons (one circular chromosome and three megaplasmids) were identified. The two largest megaplasmids (pGR340 and pGR157) contain multiple genes that codify for pesticidal proteins: 10 cry genes (cry1Ab, cry1Bb, cry1Da, cry1Fb, cry1Hb, cry1Id, cry1Ja, cry1Ka, cry1Nb, and cry2Ad), two vip genes (vip3Af and vip3Ag), two binary toxin genes (vpa2Ac and vpb1Ca), five genes that codify for insecticidal toxin components (Tc’s), and a truncated cry1Bd-like gene. In addition, genes that codify for several virulent factors were also found in this strain. Proteomic analysis of the parasporal crystals of GR007 revealed that they are composed of eight Cry proteins. Further cloning of these genes for their individual expression in Bt acrystalliferous strain, by means of their own intrinsic promoter showed expression of seven Cry proteins. These proteins display differential toxicity against M. sexta and S. frugiperda larvae, where Cry1Bb showed to be the most active protein against S. frugiperda larvae and Cry1Ka the most active protein against M. sexta larvae.

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Polyphenol contents in amaranth cultivars and their relationship with insect feeding deterrence

Niveyro,

Salvo,

Laursen

et al. 2023

Arthropod-Plant Interactions

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Visual and Gustatory Responses ofSpodoptera frugiperda(Lepidoptera: Noctuidae) Larvae to Artificial Food Dyes

Cited by 5 publications

References 18 publications

Life Table Study of Fall Armyworm (Spodoptera frugiperda) (Lepidoptera: Noctuidae) on Three Host Plants under Laboratory Conditions

Life Table Study of Fall Armyworm (Spodoptera frugiperda) (Lepidoptera: Noctuidae) on Three Host Plants under Laboratory Conditions

Whole Genome Sequencing Analysis of Bacillus thuringiensis GR007 Reveals Multiple Pesticidal Protein Genes

Polyphenol contents in amaranth cultivars and their relationship with insect feeding deterrence

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