
Two studies appear to confirm DNA barcoding as a powerful taxonomic tool. Paul Hebert and colleagues at the University of Guelph, Ontario, analyzed the single gene for cytochrome c oxidase I to distinguish 260 known North American bird species. The so-called DNA barcodes identified four new cryptic species as well.1
The group also used the technique to demonstrate that the neotropical skipper butterfly,
But he warns about reliance on the technique: "Some of the barcoding apologists have done a disservice to systematics and especially taxonomy by overselling the strengths of the approach." While Hebert admits a single gene doesn't tell the whole story, he says a multigenic approach would...
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