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Barcoding bugs: DNA-based identification of the true bugs (Insecta: Hemiptera: Heteroptera)
Doo-Sang Park1, Robert Foottit, Eric Maw
1Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.
Plos One
|April 29, 2011
Summary
DNA barcoding using the COI gene effectively identifies Heteroptera species, with over 77% showing distinct genetic markers. This method aids pest management and reveals cryptic species.
Area of Science:
- Entomology
- Molecular Biology
- Genomics
Background:
- DNA barcoding analyzes mitochondrial cytochrome c oxidase I (COI) gene variation for species identification.
- This study assessed DNA barcoding efficacy for discriminating Heteroptera (true bugs).
Purpose of the Study:
- To evaluate the effectiveness of DNA barcoding for species identification within the insect order Heteroptera.
- To analyze sequence variation in the COI gene for 344 Heteroptera species.
Main Methods:
- Examined 344 species from 178 genera of Heteroptera.
- Analyzed sequence variation in the 5' region of the mitochondrial COI gene.
Main Results:
- 90% of taxa showed <2% intra-specific divergence in COI sequences.
- 77% of congeneric species pairs exhibited >3% interspecific divergence.
- Identified potential cryptic species due to deep intra-specific divergence and instances of barcode identity between genera.
Conclusions:
- DNA barcoding is a valuable tool for Heteroptera identification.
- Applications include pest management, regulatory compliance, and environmental monitoring.
- This technique will facilitate the discovery of new species and those requiring further taxonomic research.
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