Featured Research

from universities, journals, and other organizations

Genetic markers show something fishy with certified Chilean sea bass sales

Date:
August 23, 2011
Source:
Clemson University
Summary:
A population biologist has found that not all certified Chilean sea bass are what they are claimed to be. Some fish sold in stores are not from the fishing grounds certified as sustainable, and some are not Chilean sea bass at all.

Clemson University population biologist Peter Marko and his colleagues have found that not all certified Chilean sea bass are what they are claimed to be. Some fish sold in stores are not from the fishing grounds certified as sustainable, and some are not Chilean sea bass at all.

The research by Marko, Holly Nance and Kimberly Guynn is reported in the Aug. 23 edition of Current Biology. The findings raise questions about the integrity of the "chain of custody" for retail fish certified to be from sustainable fisheries. Somewhere along the fish supply chain, which starts with the Marine Stewardship Council certifying that a location is a sustainable fishery and ends in a market with fish on ice eco-labeled as sustainably harvested seafood, a significant number of impostors are introduced.

Analyzing the mitochondrial DNA from fish purchased at retail outlets in eight states, the researchers found that eight percent of 36 fish sampled were "actually other species," according to Marko, and that 15 percent of 33 fish sampled had mitochondrial DNA variants that are not known from the South Georgia/Shag Rocks population, which is the only certified Chilean sea bass fishery. The location is in the South Ocean between Antarctica and the southern tip of South America.

"Our data point to a problem with the supply chain," said Marko. "Fish are being sold that are improperly labeled. Where and how the uncertified fish reach market was not the focus of our research but are issues that deserve attention."

Marko has been a fish sleuth before. In 2004, he and his students at the University of North Carolina at Chapel Hill used genetic analyses to identify red snapper, finding out that a significant number of the fish sold in markets were not what were advertised.


Story Source:

The above story is based on materials provided by Clemson University. Note: Materials may be edited for content and length.


Journal Reference:

  1. Peter B. Marko, Holly A. Nance, Kimberly D. Guynn. Genetic detection of mislabeled fish from a certified sustainable fishery. Current Biology, 23 August 2011; 21(16) pp. R621 - R622 DOI: 10.1016/j.cub.2011.07.006

Cite This Page:

Clemson University. "Genetic markers show something fishy with certified Chilean sea bass sales." ScienceDaily. ScienceDaily, 23 August 2011. <www.sciencedaily.com/releases/2011/08/110822131811.htm>.
Clemson University. (2011, August 23). Genetic markers show something fishy with certified Chilean sea bass sales. ScienceDaily. Retrieved September 22, 2014 from www.sciencedaily.com/releases/2011/08/110822131811.htm
Clemson University. "Genetic markers show something fishy with certified Chilean sea bass sales." ScienceDaily. www.sciencedaily.com/releases/2011/08/110822131811.htm (accessed September 22, 2014).

Share This



More Plants & Animals News

Monday, September 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: San Diego Zoo Welcomes Cheetah Cubs

Raw: San Diego Zoo Welcomes Cheetah Cubs

AP (Sep. 20, 2014) The San Diego Zoo has welcomed two Cheetah cubs to its Safari Park. The nearly three-week-old female cubs are being hand fed and are receiving around the clock care. (Sept. 20) Video provided by AP
Powered by NewsLook.com
Chocolate Museum Opens in Brussels

Chocolate Museum Opens in Brussels

AFP (Sep. 19, 2014) Considered a "national heritage" in Belgium, chocolate now has a new museum in Brussels. In a former chocolate factory, visitors to the permanent exhibition spaces, workshops and tastings can discover derivatives of the cocoa bean. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com
Could Grief Affect The Immune Systems Of Senior Citizens?

Could Grief Affect The Immune Systems Of Senior Citizens?

Newsy (Sep. 19, 2014) The study found elderly people are much more likely to become susceptible to infection than younger adults going though a similar situation. Video provided by Newsy
Powered by NewsLook.com
Jury Delivers Verdict in Salmonella Trial

Jury Delivers Verdict in Salmonella Trial

AP (Sep. 19, 2014) A federal jury has convicted three people in connection with an outbreak of salmonella poisoning five years ago that sickened hundreds of people and was linked to a number of deaths. (Sept. 19) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins