| 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 |