Genetic structure and molecular variability of Spodoptera frugiperda (Lepidoptera: Noctuidae) collected in maize and cotton fields in Brazil

The purpose of this research was to evaluate the genetic similarity and structure of the fall armyworm, Spodoptera frugiperda (J.E. Smith), populations associated with maize and cotton crops in Brazil using amplified fragment length polymorphisms. Mean genetic similarity among populations was 0.45....

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Bibliographic Details
Published in:Bulletin of entomological research 2007-06, Vol.97 (3), p.225-231
Main Authors: Martinelli, S., Clark, P.L., Zucchi, M.I., Silva-Filho, M.C., Foster, J.E., Omoto, C.
Format: Article
Language:English
Subjects:
AFLP markers
amplified fragment length polymorphism
Animal populations
Animals
Biological and medical sciences
Brazil
Butterflies & moths
Cereal crops
Corn
Cotton
Entomology
fall armyworm
Fundamental and applied biological sciences. Psychology
Genetic diversity
genetic markers
Genetic structure
genetic variation
Genetics of eukaryotes. Biological and molecular evolution
Genomics
Gossypium
Gossypium - parasitology
host plants
Invertebrata
Lepidoptera
Noctuidae
Pesticides
Polymorphism, Restriction Fragment Length
Population genetics
Population genetics, reproduction patterns
population structure
resistance management
Rice
Spodoptera - genetics
Spodoptera frugiperda
Zea mays
Zea mays - parasitology
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Summary:The purpose of this research was to evaluate the genetic similarity and structure of the fall armyworm, Spodoptera frugiperda (J.E. Smith), populations associated with maize and cotton crops in Brazil using amplified fragment length polymorphisms. Mean genetic similarity among populations was 0.45. The unweighted pair group method with arithmetic mean analysis dendrograms did not separate populations of S. frugiperda into clusters related to the host plant in which the insects were collected. No genetic variation was observed among maize and cotton populations of S. frugiperda, suggesting that the same populations are injuring both crops in Brazil. This research validates the need for stewardship of crop-protection methods for managing S. frugiperda to reduce the incidence of pesticide resistance, due to the spatial and temporal overlapping of maize and cotton crops in some regions in Brazil.
ISSN:0007-4853
1475-2670
DOI:10.1017/S0007485307004944