scholarly journals Effective dominance of resistance of Spodoptera frugiperda to Bt maize and cotton varieties: implications for resistance management

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Renato J. Horikoshi ◽  
Daniel Bernardi ◽  
Oderlei Bernardi ◽  
José B. Malaquias ◽  
Daniela M. Okuma ◽  
...  
Keyword(s):  
Spodoptera Frugiperda ◽  
Resistance Management ◽  
Bt Maize

Predator Preference for Bt-Fed Spodoptera frugiperda (Lepidoptera: Noctuidae) Prey: Implications for Insect Resistance Management in Bt Maize Seed Blends

2017 ◽  
Vol 110 (3) ◽  
pp. 1317-1325
Author(s):  
Z. Svobodová ◽  
E. C. Burkness ◽  
O. Skoková Habuštová ◽  
W. D. Hutchison
Keyword(s):  
Insect Resistance ◽  
Spodoptera Frugiperda ◽  
Resistance Management ◽  
Maize Seed ◽  
Bt Maize ◽  
Insect Resistance Management ◽  
Predator Preference ◽  
Lepidoptera Noctuidae

scholarly journals Susceptibility and Aversion of Spodoptera frugiperda (Lepidoptera: Noctuidae) to Cry1F Bt Maize and Considerations for Insect Resistance Management

2014 ◽  
Vol 107 (1) ◽  
pp. 368-374 ◽  
Author(s):  
Rachel R. Binning ◽  
Joel Coats ◽  
Xiaoxiao Kong ◽  
Richard L. Hellmich
Keyword(s):  
Insect Resistance ◽  
Spodoptera Frugiperda ◽  
Resistance Management ◽  
Bt Maize ◽  
Insect Resistance Management ◽  
Lepidoptera Noctuidae

Status of resistance to Bt maize in Spodoptera frugiperda: Lessons from Puerto Rico

2012 ◽  
Vol 110 (3) ◽  
pp. 294-300 ◽  
Author(s):  
Nicholas P. Storer ◽  
Mary E. Kubiszak ◽  
J. Ed King ◽  
Gary D. Thompson ◽  
Antonio Cesar Santos
Keyword(s):  
Puerto Rico ◽  
Spodoptera Frugiperda ◽  
Bt Maize

scholarly journals Performance and cross-crop resistance of Cry1F-maize selected Spodoptera frugiperda on transgenic Bt cotton: implications for resistance management

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Fei Yang ◽  
David L. Kerns ◽  
Sebe Brown ◽  
Ryan Kurtz ◽  
Tim Dennehy ◽  
...  
Keyword(s):  
Spodoptera Frugiperda ◽  
Resistance Management ◽  
Bt Cotton ◽  
Transgenic Bt Cotton ◽  
Crop Resistance

Fitness costs associated with spinetoram resistance in Spodoptera frugiperda is driven by host plants

2021 ◽  
Author(s):  
Rubens Hideo Kanno ◽  
Aline Guidolin ◽  
Fernando Padovez ◽  
Juliana Rodrigues ◽  
Celso Omoto
Keyword(s):  
Insecticide Resistance ◽  
Spodoptera Frugiperda ◽  
Host Plants ◽  
Agricultural Landscape ◽  
Growth Parameters ◽  
Resistance Management ◽  
Population Increase ◽  
Relative Fitness ◽  
Fitness Costs ◽  
Cotton Plants

Insecticide resistance is usually associated with fitness costs. The magnitude of fitness costs is affected by environmental and ecological factors. Here, we explored how host plants could affect fitness costs associated with insecticide resistance. Initially, spinetoram-resistant (RR) and susceptible (SS) strains of Spodoptera frugiperda were selected using F2 screen from a population collected in Sao Desiderio, Bahia State, Brazil in 2018. Besides de RR and SS strains, fitness costs were also assessed for a heterozygous strain (RS). Life-history traits were evaluated to estimate population growth parameters of neonate larvae of each strain fed on corn, soybean and cotton plants. Compared to the SS strain, the relative fitness of the RR strain, based on intrinsic rate of population increase, was 1.06, 0.84 and 0.67 on plants of corn, soybean and cotton respectively. The relative fitness of the RS strain was similar to the SS strain regardless the host plant, suggesting a recessive fitness cost. No differences were found between the strains fed on corn plants. The larval development time was greater for RR strain fed on soybean and cotton plants compared to RS and SS strain. Low survival rate and fecundity of the RR strain were found when larvae fed on plants of soybean and cotton. The results of this study demonstrated that fitness costs of spinetoram resistance in S. frugiperda depend strongly on the host plants that S. frugiperda larvae fed on. Such information can be used to design resistance management strategies considering the host plants of the agricultural landscape. Keywords: fall armyworm; spinosyns; insect resistance management; relative fitness.

scholarly journals Performance of Bt‐susceptible and ‐heterozygous dual‐gene resistant genotypes of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in seed blends of non‐Bt and pyramided Bt maize

2020 ◽  
Author(s):  
Marcelo Dimase ◽  
Sebe Brown ◽  
Graham P. Head ◽  
Paula A. Price ◽  
Wade Walker ◽  
...  
Keyword(s):  
Spodoptera Frugiperda ◽  
Bt Maize ◽  
Lepidoptera Noctuidae ◽  
Resistant Genotypes

scholarly journals Effect of Bt Maize and Soil Insecticides on Yield, Injury, and Rootworm Survival: Implications for Resistance Management

2013 ◽  
Vol 106 (5) ◽  
pp. 1941-1951 ◽  
Author(s):  
Jennifer L. Petzold-Maxwell ◽  
Lance J. Meinke ◽  
Michael E. Gray ◽  
Ronald E. Estes ◽  
Aaron J. Gassmann
Keyword(s):  
Resistance Management ◽  
Bt Maize ◽  
Soil Insecticides

scholarly journals Resistance to dual-gene Bt maize in Spodoptera frugiperda: selection, inheritance and cross-resistance to other transgenic events

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Oscar F. Santos-Amaya ◽  
João V. C. Rodrigues ◽  
Thadeu C. Souza ◽  
Clébson S. Tavares ◽  
Silverio O. Campos ◽  
...  
Keyword(s):  
Spodoptera Frugiperda ◽  
Cross Resistance ◽  
Bt Maize

scholarly journals Water in maize whorl enhances the control of Spodoptera frugiperda with insecticides

2020 ◽  
Vol 50 ◽  
Author(s):  
Adriano Bialozor ◽  
Clérison Régis Perini ◽  
Jonas André Arnemann ◽  
Henrique Pozebon ◽  
Adriano Arrué Melo ◽  
...  
Keyword(s):  
Grain Yield ◽  
Spodoptera Frugiperda ◽  
Insect Pests ◽  
Fall Armyworm ◽  
Early Growth ◽  
Growth Stages ◽  
Bt Maize ◽  
Maize Hybrids ◽  
Cropping Seasons ◽  
And Control

ABSTRACT The fall armyworm Spodoptera frugiperda is among the main insect-pests on maize crops, due to its damaging potential and control issues related to the larval habit of concealing itself within the plant whorl. This study aimed to evaluate the effect of water in the maize whorl, combined with insecticides and spray sets, on the damage caused by S. frugiperda and the grain yield. The experiments were carried out under field conditions, at two cropping seasons, both with Bt-maize hybrids, in a 2 × 2 × 5 + 1 factorial scheme, testing the presence or absence of water inside the plant whorl, two insecticides and five spray sets (combinations of spray volumes, nozzle types, pressures and spraying speed), plus a control without water and insecticide. The presence of water inside the whorl reduced the damage caused by S. frugiperda during the early growth stages, especially in the plants sprayed with the insecticide chlorantraniliprole. The spray sets with 200 L ha1/20.3 psi or 250 L ha1/33.4 psi provided the highest reductions in the percentage of damaged plants and damage scores, regardless of the insecticide. Therefore, the spraying of insecticides, when there is water from irrigation, dew or rainfall inside the maize whorl, improves the control of S. frugiperda in maize crops, especially in Bt-maize.

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