scholarly journals Susceptibility of Field Populations of the Fall Armyworm (Lepidoptera: Noctuidae) from Florida and Puerto Rico to Purified Cry1f Protein and Corn Leaf Tissue Containing Single and Pyramided Bt Genes

2013 ◽  
Vol 96 (3) ◽  
pp. 701-713 ◽  
Author(s):  
Ying Niu ◽  
Robert L. Meagher ◽  
Fei Yang ◽  
Fangneng Huang
Keyword(s):  
Puerto Rico ◽  
Leaf Tissue ◽  
Fall Armyworm ◽  
Bt Genes ◽  
Lepidoptera Noctuidae

Field-Evolved Resistance of the Fall Armyworm (Lepidoptera: Noctuidae) to Synthetic Insecticides in Puerto Rico and Mexico

2018 ◽  
Vol 112 (2) ◽  
pp. 792-802 ◽  
Author(s):  
Rebeca Gutiérrez-Moreno ◽  
David Mota-Sanchez ◽  
Carlos A Blanco ◽  
Mark E Whalon ◽  
Henry Terán-Santofimio ◽  
...  
Keyword(s):  
Puerto Rico ◽  
Fall Armyworm ◽  
Lepidoptera Noctuidae

Efficacy of Cry1Ac:Cry1F Proteins in Cotton Leaf Tissue Against Fall Armyworm, Beet Armyworm, and Soybean Looper (Lepidoptera: Noctuidae)

2009 ◽  
Vol 102 (4) ◽  
pp. 1497-1505 ◽  
Author(s):  
K. V. Tindall ◽  
M. Willrich Siebert ◽  
B. R. Leonard ◽  
J. All ◽  
F. J. Haile
Keyword(s):  
Leaf Tissue ◽  
Fall Armyworm ◽  
Beet Armyworm ◽  
Cotton Leaf ◽  
Soybean Looper ◽  
Lepidoptera Noctuidae

scholarly journals Observations on the Relationships between Endophytic Metarhizium robertsii, Spodoptera frugiperda (Lepidoptera: Noctuidae), and Maize

Pathogens ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 713
Author(s):  
Brianna Flonc ◽  
Mary Barbercheck ◽  
Imtiaz Ahmad
Keyword(s):  
Spodoptera Frugiperda ◽  
Growth Promotion ◽  
Leaf Tissue ◽  
Fall Armyworm ◽  
Metarhizium Robertsii ◽  
Endophytic Colonization ◽  
Maize Seeds ◽  
Pest Suppression ◽  
Root Tissues ◽  
Lepidoptera Noctuidae

Fungi in the genus Metarhizium are entomopathogens that can establish endophytically inside plants and benefit them through growth promotion and pest suppression. Lab- and greenhouse-based experiments were conducted to examine the effects of endophytic M. robertsii colonization in maize (Zea mays) on fall armyworm (FAW) (Spodoptera frugiperda). Maize seeds were inoculated with M. robertsii conidia, plants were evaluated for endophytic colonization, and then relative growth rate (RGR) and feeding behavior of larval FAW fed leaves from inoculated and uninoculated maize were measured. Endophytic M. robertsii was recovered from 60.5% of inoculated maize. In feeding bioassays, the RGR of larval FAW fed leaves of inoculated maize was no different than the RGR of larvae fed leaves from uninoculated maize. The RGR of larval FAW was positively correlated with the proportion of endophytic colonization of maize leaf and root tissues; however, in feeding assays, FAW larvae demonstrated no preference for consuming leaf tissue from inoculated or uninoculated maize. The proportion of leaf tissue consumed was unrelated to the proportion of M. robertsii-colonization of leaf or root tissue from source plants. We discuss possible reasons why FAW were not affected by endophytic M. robertsii in the context of assay methodology, FAW physiology, and induced maize defenses.

scholarly journals Impact of an Exotic Invasive Pest, Spodoptera frugiperda (Lepidoptera: Noctuidae), on Resident Communities of Pest and Natural Enemies in Maize Fields in Kenya

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1074
Author(s):  
Bonoukpoè Mawuko Sokame ◽  
Boaz Musyoka ◽  
Julius Obonyo ◽  
François Rebaudo ◽  
Elfatih M. Abdel-Rahman ◽  
...  
Keyword(s):  
Natural Enemies ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm ◽  
Invasive Pest ◽  
Growth Stages ◽  
Insect Communities ◽  
Exotic Invasive Species ◽  
Before And After ◽  
Exotic Invasive ◽  
Lepidoptera Noctuidae

The interactions among insect communities influence the composition of pest complexes that attack crops and, in parallel, their natural enemies, which regulate their abundance. The lepidopteran stemborers have been the major maize pests in Kenya. Their population has been regulated by natural enemies, mostly parasitoids, some of which have been used for biological control. It is not known how a new exotic invasive species, such as the fall armyworm (FAW), Spodoptera frugiperda (Lepidoptera, Noctuidae), may affect the abundance and parasitism of the resident stemborers. For this reason, pest and parasitism surveys have been conducted, before and after the FAW invaded Kenya, in maize fields in 40 localities across 6 agroecological zones (AEZs) during the maize-growing season, as well as at 3 different plant growth stages (pre-tasseling, reproductive, and senescence stages) in 2 elevations at mid-altitude, where all maize stemborer species used to occur together. Results indicated that the introduction of the FAW significantly correlated with the reduction of the abundance of the resident communities of maize stemborers and parasitoids in maize fields; moreover, the decrease of stemborer density after the arrival of FAW occurred mostly at both reproductive and senescent maize stages. It also suggests a possible displacement of stemborers by FAW elsewhere; for example, to other cereals. However, since this study was conducted only three years after the introduction of the FAW, further studies will need to be conducted to confirm such displacements.

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