Low susceptibility of Spodoptera cosmioides, Spodoptera eridania and Spodoptera frugiperda (Lepidoptera: Noctuidae) to genetically-modified soybean expressing Cry1Ac protein

AbstractGenetically modified crops with insect resistance genes fromBacillus thuringiensisBerliner (Bt-plants) are increasingly being cultivated worldwide. Therefore, it is critical to improve our knowledge of their direct or indirect impact not only on target pests but also on non-target arthropods. Hence, this study evaluates comparative leaf consumption and performance ofSpodoptera eridania(Cramer), a species that is tolerant of the Cry1Ac protein, fed withBtsoybean, MON 87701×MON 89788 or its non-Btisoline. We also assessed the comparative performance of the egg parasitoidTelenomus remusNixon on eggs ofS. eridaniaproduced from individuals that fed on these two soybean isolines as larvae. Results showed thatBtsoybean reduced by 2 days larval development and increased by 3 days adult male longevity. Therefore, we conclude that the effect ofBtsoybean MON 87701×MON 89788 onS. eridaniadevelopment and reproduction is small, and favorable to pest development. These differences are less likely to directly result from the toxin presence but indirectly from unintended changes in plant characteristics caused by the insertion of the transgene. Our results should be viewed as an alert thatS. eridaniapopulations may increase inBtsoybeans, but on the other hand, no adverse effects of this technology were observed for the egg parasitoidT. remuswhich can help to preventS. eridaniaoutbreaks on these crops.

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Survival and development of Spodoptera eridania , Spodoptera cosmioides and Spodoptera albula (Lepidoptera: Noctuidae) on genetically‐modified soybean expressing Cry1Ac and Cry1F proteins

Pest Management Science ◽

10.1002/ps.5955 ◽

2020 ◽

Vol 76 (12) ◽

pp. 4029-4035 ◽

Cited By ~ 2

Author(s):

Eduardo P Machado ◽

Gerson L dos S Rodrigues Junior ◽

Junior C Somavilla ◽

Fábio M Führ ◽

Stefan L Zago ◽

...

Keyword(s):

Genetically Modified ◽

Genetically Modified Soybean ◽

Spodoptera Eridania ◽

Survival And Development ◽

Lepidoptera Noctuidae

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Selection and characterization of the Bacillus thuringiensis strains toxic to Spodoptera eridania (Cramer), Spodoptera cosmioides (Walker) and Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae)

Biological Control ◽

10.1016/j.biocontrol.2009.03.014 ◽

2009 ◽

Vol 50 (2) ◽

pp. 157-163 ◽

Cited By ~ 32

Author(s):

Karen Bianchi dos Santos ◽

Pedro Neves ◽

Ana Maria Meneguim ◽

Rachel Bianchi dos Santos ◽

Walter Jorge dos Santos ◽

...

Keyword(s):

Bacillus Thuringiensis ◽

Spodoptera Frugiperda ◽

Spodoptera Eridania ◽

Lepidoptera Noctuidae

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Populations of Spodoptera frugiperda (Lepidoptera: Noctuidae) cause significant damage to genetically modified corn crops

Revista Facultad Nacional de Agronomía Medellín ◽

10.15446/rfnam.v72n3.75730 ◽

2019 ◽

Vol 72 (3) ◽

pp. 8953-8962 ◽

Cited By ~ 1

Author(s):

Camilo Ignacio Jaramillo Barrios ◽

Eduardo Barragán Quijano ◽

Buenaventura Monje Andrade

Keyword(s):

Spodoptera Frugiperda ◽

Mixed Models ◽

Genetically Modified ◽

Fall Armyworm ◽

Larval Population ◽

Management Actions ◽

Pest Monitoring ◽

Hybrid Plants ◽

Significant Damage ◽

Lepidoptera Noctuidae

The fall armyworm (Spodoptera frugiperda (J.E. Smith)) is an important harmful pest for corn crops in Colombia. Knowing its population’s fluctuation regarding genetically modified plants allows the implementation of monitoring plans and time-effective management actions. The objective of this study was to establish the population’s fluctuation of S. frugiperda during 2014-2016 in the hybrids 30F35R and 30F35HR (genetically modified with the Cry1F endotoxin) in El Espinal, Tolima, Colombia. Accumulations in five growing cycles were carried out until 20, 40, 60, 80, and 104 days with the number of larvae per linear meter after emergence per year and per hybrid. Results were compared statistically using linear mixed models. On the other hand, two dummy variables that reckon the presence of larvae and damage were calculated. With the indicators of presence (one) and absence (zero), a longitudinal logistic prediction model was constructed. Larger accumulation of larvae was registered in the hybrid 30F35R (6.79±0.20); however, the genetically modified genotype 30F35HR also registered the presence of larvae (4.24±0.20), inferring that the endotoxin did not exercise total control over the populations. The vegetative stage showed a higher larval population. However, when this stage is not managed, the crop can show damage up to 52% and 72% in hybrid plants with and without Cry1F, respectively. This behavior suggests that if refuge areas and strategies such as pest monitoring are not established, these insects could generate higher resistances to the plants with the endotoxin Cry1F.

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Colonization of rice and Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) larvae by genetically modified endophytic Methylobacterium mesophilicum

Neotropical Entomology ◽

10.1590/s1519-566x2010000200026 ◽

2010 ◽

Vol 39 (2) ◽

pp. 308-310 ◽

Cited By ~ 5

Author(s):

Fátima T Rampelotti-Ferreira ◽

Anderson Ferreira ◽

José D Vendramim ◽

Paulo T Lacava ◽

João L Azevedo ◽

...

Keyword(s):

Spodoptera Frugiperda ◽

Genetically Modified ◽

Methylobacterium Mesophilicum ◽

Lepidoptera Noctuidae

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Larval development of Spodoptera eridania and Spodoptera frugiperda fed on fresh ear of field corn expressing the Bt proteins (Cry1F and Cry1F + Cry1A.105 + Cry2Ab2)

Ciência Rural ◽

10.1590/0103-8478cr20151461 ◽

2016 ◽

Vol 46 (11) ◽

pp. 1898-1901 ◽

Cited By ~ 2

Author(s):

Orcial Ceolin Bortolotto ◽

Adeney de Freitas Bueno ◽

Ana Paula de Queiroz ◽

Gabriela Vieira Silva

Keyword(s):

Larval Development ◽

Food Consumption ◽

Spodoptera Frugiperda ◽

Larval Survival ◽

Larval Period ◽

Spodoptera Eridania ◽

Corn Cobs ◽

Field Corn ◽

Lepidoptera Noctuidae ◽

Corn Grains

ABSTRACT: The objective of this study was to evaluate extent of larval period, larval survival (%), food consumption, and pupal biomass of Spodoptera eridania and Spodoptera frugiperda (Lepidoptera: Noctuidae ) fed on fresh ears of field corn expressing Bt proteins (Cry1F and Cry1F+Cry1A.105+Cry2Ab2). Larvae of Spodoptera spp. survived less than two days when they consumed Bt corncobs and showed 100% mortality. Spodoptera eridania reared on non-Bt corn cobs showed higher larval development (21.6 days) than S. frugiperda (18.4 days) and lower viability (56.4% and 80.2% for S. eridania and S. frugiperda , respectively). A higher amount of corn grains was consumed by S. eridania (5.4g) than by S. frugiperda (3.9g). In summary, this study demonstrated that the toxins Cry1F and Cry1F + Cry1A.105 + Cry2Ab2 expressed in fresh corn cobs contributed to protect ears of corn against S. frugiperda and the non-target pest S. eridania . However, itis important to monitor non-Bt cornfields because of the potential of both species to cause damage to ear sof corn.

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Inert powders alone or in combination with neem oil for controlling Spodoptera eridania and Spodoptera frugiperda (Lepidoptera: Noctuidae) larvae

Semina Ciências Agrárias ◽

10.5433/1679-0359.2016v37n4p1801 ◽

2016 ◽

Vol 37 (4) ◽

pp. 1801 ◽

Cited By ~ 3

Author(s):

Kelly Christiane Constanski Silva ◽

Janaina Zorzetti ◽

Patricia Helena Santoro ◽

Adriano Thibes Hoshino ◽

Pedro Manuel Oliveira Janeiro Neves

Keyword(s):

Sex Ratio ◽

Spodoptera Frugiperda ◽

Diatomaceous Earth ◽

Aqueous Suspension ◽

Larval Period ◽

Laboratory Studies ◽

Neem Oil ◽

High Concentration ◽

Spodoptera Eridania ◽

Lepidoptera Noctuidae

Laboratory studies was carry out to evaluated the potential of inert powders: bentonite, kaolin and diatomaceous earth (DE) applied as dust and aqueous suspension alone and associated with neem oil to the control Spodoptera eridania and Spodoptera frugiperda second instar larvae. In dust applications, 100% mortality of S. eridania, at the concentrations of 1.5 and 2.0 grams of bentonite, and 93.3% of S. frugiperda, at the concentration of 2.0 g were observed. DE at the height concentration (2.0 g) caused 76.2% mortality of S. eridania and 46.6% of S. frugiperda. Kaolin, in all concentrations, was the only treatment that did not differed from the control for S. eridania but was different, in the high concentration, for S. frugiperda. When the plants were treated, larvae of S. eridania fed in the treatment DE, had an increase of two days in larval period. For the sex ratio, the percentage of males was greater in the treatments with kaolin, for both species. When powders was applied suspended in water separately or combined with neem oil, the best results were observed in combined of the bentonite (10%) + neem, with 100% mortality for both species, and kaolin (10%) + neem with 78.5% and 95.6% mortality for S. frugiperda and S. eridania, respectively. These treatments were classified as non-additive synergistic.

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