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 April 24, 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 April 24, 2014).

Share This



More Plants & Animals News

Thursday, April 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deadly Fungus Killing Bats, Spreading in US

Deadly Fungus Killing Bats, Spreading in US

AP (Apr. 24, 2014) A disease that has killed more than six million cave-dwelling bats in the United States is on the move and wildlife biologists are worried. White Nose Syndrome, discovered in New York in 2006, has now spread to 25 states. (April 24) Video provided by AP
Powered by NewsLook.com
Monkeys Are Better At Math Than We Thought, Study Shows

Monkeys Are Better At Math Than We Thought, Study Shows

Newsy (Apr. 23, 2014) A Harvard University study suggests monkeys can use symbols to perform basic math calculations. Video provided by Newsy
Powered by NewsLook.com
Raw: Leopard Bites Man in India

Raw: Leopard Bites Man in India

AP (Apr. 22, 2014) A leopard caused panic in the city of Chandrapur on Monday when it sprung from the roof of a house and charged at rescue workers. (April 22) Video provided by AP
Powered by NewsLook.com
Iowa College Finds Beauty in Bulldogs

Iowa College Finds Beauty in Bulldogs

AP (Apr. 22, 2014) Drake University hosts 35th annual Beautiful Bulldog Contest. (April 21) 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