Rockefeller University

Program for the Human Environment

The Barcode Blog

A mostly scientific blog about short DNA sequences for species identification and discovery. I encourage your commentary. -- Mark Stoeckle

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CSI for fish: High school students help showcase ease of DNA-based species identification

In Pacific Fishing September 2008 (issue available on newstands, not yet on web) two New York City teenagers, Kate Stoeckle (my daughter!), 19, and classmate Louisa Strauss, 18, apply DNA-based identification to fish sold in their Manhattan neighborhood. The girls purchased 60 items from 14 establishments and sent samples to University of Guelph where graduate student Eugene Wong performed DNA barcode analysis. 14 (25%) of 56 samples with recoverable DNA were mislabeled, in all cases as more expensive or more desirable fish. Mislabeled items were sold at 2 of 4 restaurants and 6 of 10 grocery stores/fish markets. 

The frequency of mislabeling and the ease of high-schoolers obtaining DNA-based species identifications captured public interest. Their study was featured on page 1 in New York Times on August 22, one of the “quotes of the day” on CNN/Time website, a live segment on CBS TV Early Show, an interview on national public radio, and has appeared in over 350 print and news items and blogs from 34 countries in 10 languages so far, with particularly heavy coverage in China, Korea, and Japan, presumably related to dietary importance of fish in general and sushi in particular. 

This response demonstrates how powerful the FishBOL database is already (30,665 barcodes from 5,463 species so far, which represents about 20% of world fish), and hints at enormous uses that DNA barcoding will have as technology gets smaller and cheaper.

This entry was posted on Tuesday, August 26th, 2008 at 9:52 pm and is filed under General. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

2 Responses to “CSI for fish: High school students help showcase ease of DNA-based species identification”

  1. Hugo Mejia-Madrid Says:
    August 27th, 2008 at 10:39 am

    The wish of us all is that these DNA barcode analyses become more widespread especially where there is a lot of endangered species trafficking, i.e., tropical countries.

  2. Mbatudde Says:
    August 27th, 2008 at 11:56 pm

    This is such an interesting result but, i wish these restaurants and groceries are informed such that they know our findings and they do not do this stupid thing again.

Contact: mark.stoeckle@rockefeller.edu

About this site

This web site is an outgrowth of the Taxonomy, DNA, and Barcode of Life meeting held at Banbury Center, Cold Spring Harbor Laboratory, September 9-12, 2003. It is designed and managed by Mark Stoeckle, Perrin Meyer, and Jason Yung at the Program for the Human Environment (PHE) at The Rockefeller University.

About the Program for the Human Environment

The involvement of the Program for the Human Environment in DNA barcoding dates to Jesse Ausubel's attendance in February 2002 at a conference in Nova Scotia organized by the Canadian Center for Marine Biodiversity. At the conference, Paul Hebert presented for the first time his concept of large-scale DNA barcoding for species identification. Impressed by the potential for this technology to address difficult challenges in the Census of Marine Life, Jesse agreed with Paul on encouraging a conference to explore the contribution taxonomy and DNA could make to the Census as well as other large-scale terrestrial efforts. In his capacity as a Program Director of the Sloan Foundation, Jesse turned to the Banbury Conference Center of Cold Spring Harbor Laboratory, whose leader Jan Witkowski prepared a strong proposal to explore both the scientific reliability of barcoding and the processes that might bring it to broad application. Concurrently, PHE researcher Mark Stoeckle began to work with the Hebert lab on analytic studies of barcoding in birds. Our involvement in barcoding now takes 3 forms: assisting the organizational development of the Consortium for the Barcode of Life and the Barcode of Life Initiative; contributing to the scientific development of the field, especially by studies in birds, and contributing to public understanding of the science and technology of barcoding and its applications through improved visualization techniques and preparation of brochures and other broadly accessible means, including this website. While the Sloan Foundation continues to support CBOL through a grant to the Smithsonian Institution, it does not provide financial support for barcoding research itself or support to the PHE for its research in this field.