| comparison of haplotype frequencies differentiate fall armyworm (lepidoptera: noctuidae) corn-strain populations from florida and brazil. | fall armyworm, spodoptera frugiperda (j.e. smith) (lepidoptera: noctuidae), is a major economic pest throughout the western hemisphere. populations can be subdivided into two morphologically identical but genetically distinct strains (corn-strain and rice-strain) that differ in their host plant preferences. these strains can be distinguished by using polymorphisms in the mitochondrial cytochrome oxidase 1 gene. additional sequence analysis of this locus identified two sites that were highly poly ... | 2007 | 17598561 |
| genetic and biological variation among nucleopolyhedrovirus isolates from the fall armyworm, spodoptera frugiperda (lepidoptera: noctuidae). | a pcr-based method was used to identify and distinguish among 40 uncharacterized nucleopolyhedrovirus (npv) isolates from larvae of the moth spodoptera frugiperda that were part of an insect virus collection. phylogenetic analysis was carried out with sequences amplified from two strongly conserved loci (polh and lef-8) from the 40 isolates in the collection and from eight previously studied s. frugiperda npv (sfmnpv) isolates. to further distinguish these isolates, analysis was also carried out ... | 2010 | 20213487 |
| puerto rico fall armyworm has only limited interactions with those from brazil or texas but could have substantial exchanges with florida populations. | fall armyworm, spodoptera frugiperda (j.e. smith) (lepidoptera: noctuidae), is an important agricultural pest that is endemic to puerto rico and the rest of the caribbean islands. relatively little is known about the population movements of fall armyworm in the caribbean and the magnitude of genetic interactions, if any, with populations from north, south, and central america. to address this issue, a novel method involving mitochondrial haplotype ratios currently being used to study the migrati ... | 2010 | 20429449 |