A5079367597- Insect-Plant Interactions and Control
- Insect Resistance and Genetics
- Insect and Pesticide Research
- Insect behavior and control techniques
- Insect and Arachnid Ecology and Behavior
- Entomopathogenic Microorganisms in Pest Control
- Insect Pest Control Strategies
- Hemiptera Insect Studies
- Plant and animal studies
- Entomological Studies and Ecology
- Insect Pheromone Research and Control
- Forest Insect Ecology and Management
- Parasite Biology and Host Interactions
- Lepidoptera: Biology and Taxonomy
- History and Developments in Astronomy
- Coleoptera Taxonomy and Distribution
- Insects and Parasite Interactions
- Orthoptera Research and Taxonomy
- Research on scale insects
- Agricultural pest management studies
- Fossil Insects in Amber
- Diptera species taxonomy and behavior
- Animal Ecology and Behavior Studies
- Forensic Entomology and Diptera Studies
- Mosquito-borne diseases and control
Center for Medical, Agricultural and Veterinary Entomology
2016-2025
United States Department of Agriculture
2014-2025
Agricultural Research Service
2016-2025
Agricultural Research Service - Southeast Area
2021
University of Florida
2017-2019
Virginia Cooperative Extension
2019
Pennsylvania State University
1985-2017
Southern Plains Agricultural Research Center
2017
Origin Energy (Australia)
2012
Energy Biosciences Institute
2009
Evolution of insect resistance to transgenic crops containing Bacillus thuringiensis (Bt) genes is a serious threat the sustainability this technology. However, field related reduced efficacy Bt maize has not been documented in any lepidopteran pest mainland U.S. after 18 years intensive planting. Here we report compelling evidence fall armyworm, Spodoptera frugiperda (J.E. Smith), Cry1F (TC 3507) southeastern region An F2 screen showed surprisingly high (0.293) allele frequency population...
Fall armyworm (Spodoptera frugiperda J.E. Smith) is a noctuid moth pest endemic throughout the Western Hemisphere that has recently become widespread in sub-Saharan Africa. There strong expectation of significant damage to African maize crop yield and high likelihood further dispersal, putting rest Eastern at risk. Specimens from multiple locations six countries spanning northern portion infested region were analyzed for genetic markers. The similarity haplotypes between collections was...
Abstract Spodoptera frugiperda (J. E. Smith) or fall armyworm is an important agricultural pest of a number crops in the western hemisphere. In United States, infestations corn acreages extend from Mexican to Canadian border. Because does not survive prolonged freezing, annually affecting most North America are migrants southern Texas and Florida, where winter temperatures mild host plants available. A haplotype method was developed that can distinguish between these two geographically...
The fall armyworm (Spodoptera frugiperda, J.E. Smith) is a noctuid moth that major and ubiquitous agricultural pest in the Western Hemisphere. Infestations have recently been identified several locations Africa, indicating its establishment Eastern Hemisphere where it poses an immediate significant economic threat. Genetic methods were used to characterize specimens infesting multiple cornfields African nation of Togo tentatively as by morphological criteria. Species identification was...
Abstract Evolution of resistance threatens sustainability transgenic crops producing insecticidal proteins from the bacterium Bacillus thuringiensis (Bt). The fall armyworm ( Spodoptera frugiperda ) is a devastating pest corn in Western Hemisphere initially controlled by Bt Cry1Fa protein (event TC1507). However field-evolved to TC1507 was observed Puerto Rico 2007 and has subsequently been reported number locations North South America. Early studies on populations found that phenotype...
The fall armyworm, Spodoptera frugiperda (J. E. Smith)(Lepidoptera: Noctuidae), is an important agricultural pest of the Western Hemisphere noted for its broad host range, long distance flight capabilities, and a propensity to develop resistance pesticides that includes subset those used in genetically modified corn varieties. These characteristics exacerbate threat armyworm poses agriculture, with potential trait arising one geographical location could rapidly disseminate throughout...
The recent discovery of fall armyworm (Spodoptera frugiperda, J.E. Smith) in Africa presents a significant threat to that continent's food security. species exhibits several traits the Western Hemisphere if transferred would significantly complicate control efforts. These include broad host range, long-distance migratory behavior, and resistance multiple pesticides varies by regional population. Therefore, determining which subpopulations are present could have important implications for...
Abstract Multigenerational insect migration commonly expands poleward, but meteorological influences are not clearly understood. We coupled biological and physical processes for the agricultural invasive pest Spodoptera frugiperda (fall armyworm), by modeling its seasonal migration, comparing simulated migrations to observed captures, population genetic markers, at a continental scale. Simulations corroborated spatial distribution mixing of Texas Florida source populations defined...
The fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is an invasive insect pest attacking maize in Ghana and sub-Saharan Africa countries. Biological control will need to be important management strategy, a first step was identify potential natural enemies. Sampling conducted different localities of the 10 regions from May Nov 2017. A total 1,062 larvae were collected 106 farms, presence enemies recorded 18 (17.0%) farms. Among recorded, 7 species parasitoids:...
The invasion of the Western Hemisphere native fall armyworm (Spodoptera frugiperda; J. E. Smith) (Lepidoptera: Noctuidae) into Eastern has been notable for rapidity and geographical breadth new detections. In year following first discovery in western sub-Saharan Africa 2016, infestations have documented most maize growing regions now expanded beyond with populations recently reported India. These observations could indicate a remarkable capacity rapid establishment long-distance...
Abstract Background The fall armyworm ( Spodoptera frugiperda (J.E. Smith)) is a highly polyphagous agricultural pest with long-distance migratory behavior threatening food security worldwide. This has host range of > 80 plant species, but two strains are recognized based on their association corn (C-strain) or rice and smaller grasses (R-strain). population genomics the United States (USA) remains poorly characterized to date despite its threat. Results In this study, structure genetic...
The fall armyworm, Spodoptera frugiperda (J.E. Smith) is native to the Americas and a major pest of corn several other crops economic importance. species has characteristics that make it particular concern as an invasive pest, including broad host range, long-distance migration behavior, propensity for field-evolved pesticide resistance. discovery armyworm in western Africa 2016 was followed by what apparently remarkably rapid spread throughout sub-Saharan 2018, causing damage estimated tens...
Abstract Background Molecular genetic approaches have become vital to understanding the evolutionary processes that act on insect pest populations. From mapping development of resistance monitoring and predicting movement, genomic tools can inform enhance management programs. Here, we used whole genome sequencing population genomics unravel novel patterns structure, linkage, selection across a notorious agricultural pest, fall armyworm. Results Our data strongly support existence two...
The fall armyworm, Spodoptera frugiperda (J. E. Smith) is a significant economic pest in the western hemisphere, causing substantial losses corn, sorghum, forage, and turf grasses. Although armyworm does not survive severe winters, it infests most of central eastern United States Canada because annual migrations from overwintering sites Florida Texas. A detailed description these movements prerequisite for identifying factors that determine timing direction migration developing models can...
Fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is a major economic pest throughout the Western Hemisphere. Studies of populations in southern United States and Caribbean demonstrated existence two morphologically identical but genetically distinct host strains. These races can be distinguished by using polymorphisms mitochondrial cytochrome oxidase I gene that define maternal lineages correlate with strain-specific behaviors Florida populations. Although there...
Abstract Transgenic maize, Zea maize L., expressing the Cry1F protein from Bacillus thuringiensis has been registered for Spodoptera frugiperda (J. E. Smith) control since 2003. Unexpected damage to was reported in 2006 Puerto Rico and resistance S. documented. The inheritance of characterized a resistant strain originating Rico, which displayed >289-fold purified Cry1F. Concentration–response bioassays reciprocal crosses susceptible parental populations indicated that is recessive...
A critical component for sustaining adequate food production is the protection of local agriculture from invasive pest insects. Essential to this goal ability accurately distinguish foreign closely related domestic species, a process that has traditionally required identification using diagnostic morphological "keys" can be both subtle and labor-intensive. This case Lepidopteran group insects represented by Spodoptera, genus Noctuidae "armyworm" moths includes several important agricultural...
The corn- and rice-strains of Spodoptera frugiperda exhibit several genetic behavioral differences appear to be undergoing ecological speciation in sympatry. Previous studies reported conflicting results when investigating male attraction pheromone lures different regions, but this could have been due inter-strain and/or geographic differences. Therefore, we investigated whether rice-strain males differed their response synthetic blends regions North America, the Caribbean South America. All...
Fall armyworm [Spodoptera frugiperda (J. E. Smith)] is a major economic pest throughout the Western Hemisphere of maize, cotton, sorghum, and variety agricultural grasses vegetable crops. Previous studies demonstrated extensive annual migrations occurring as far north Canada from overwintering locations in southern Florida Texas. In contrast, migratory behavior rest hemisphere largely uncharacterized. Understanding migration patterns fall will facilitate efforts to predict spread pesticide...
Larval survival of Cry1F-susceptible (FL), -resistant (PR and Cry1F-RR), -heterozygous (FL x PR Cry1F-RS) populations the fall armyworm, Spodoptera frugiperda (J. E. Smith) to purified Cry1F protein corn leaf tissue 7 Bacillus thuringiensis (Bt) hybrids 5 non-Bt was evaluated in laboratory. The Bt represent traits: Herculex®I, which expresses a single (Cry1F), Genuity® VT Double Pro™, Triple SmartStax™, Agrisure® Viptera® 3111, contain ≥ 2 pyramided genes. original FL were collected from...