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Multiplex Polymerase Chain Reaction Method for Differentiating Western and Northern Corn Rootworm Larvae (Coleoptera: Chrysomelidae)

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Western corn rootworm, Diabrotica virgifera virgifera LeConte, and northern corn rootworm, D. barberi Smith and Lawrence, are sympatric species and serious pests of corn cultivation in North America. Comparison of nucleotide sequence of mitochondrial cytochrome oxidase I and II was used to design polymerase chain reaction (PCR) primers that discriminate immature stages of the two species based on differences in amplicon size. Multiplex PCR can be used to give a positive test for each species in a single amplification reaction. This provides a method to identify field caught larvae and facilitates investigations of larval interaction and competition between the species.

Keywords: Diabrotica; corn rootworm; mitochondrial DNA; species diagnostics

Document Type: Research Article

DOI: http://dx.doi.org/10.1603/0022-0493-96.3.669

Publication date: June 1, 2003

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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