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Analysis of strain distribution, migratory potential, and invasion history of fall armyworm populations in northern Sub-Saharan Africa
- Source :
- Scientific Reports, Vol 8, Iss 1, Pp 1-10 (2018), Scientific Reports
- Publication Year :
- 2018
- Publisher :
- Nature Publishing Group, 2018.
-
Abstract
- 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 is a strong expectation of significant damage to African maize crop yield and a high likelihood of further dispersal, putting the rest of the Eastern Hemisphere at risk. Specimens from multiple locations in six countries spanning the northern portion of the infested region were analyzed for genetic markers. The similarity of haplotypes between the African collections was consistent with a common origin, but significant differences in the relative frequency of the haplotypes indicated limitations in migration. The mitochondrial marker frequently used to identify two host strains appears to be compromised, making uncertain previous reports that both strains are present in Africa. This more extensive study confirmed initial indications based on Togo populations that Florida and the Greater Antilles are the likely source of at least a subset of the African infestation and further suggest an entry point in western Africa. The origin of a second subgroup is less clear as it was rarely found in the collections and has a haplotype that has not yet been observed in the Western Hemisphere.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Genetic Markers
Zoology
lcsh:Medicine
Spodoptera
medicine.disease_cause
01 natural sciences
Article
03 medical and health sciences
Infestation
parasitic diseases
medicine
Animals
lcsh:Science
Africa South of the Sahara
Multidisciplinary
biology
Host (biology)
Haplotype
lcsh:R
biology.organism_classification
010602 entomology
030104 developmental biology
Haplotypes
Genetic marker
Florida
Fall armyworm
Biological dispersal
Animal Migration
lcsh:Q
Eastern Hemisphere
PEST analysis
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 8
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....30f058e5b81ba95a66d3b2db761ed1e9