SCIENCE IN THE NEWS DAILY
Fish Forensics Gets an Upgrade
from ScienceNOW Daily News
It's no wonder that fish stocks around the world are plummeting. Up to 25% of the global catch comes from illegal, unreported, and unregulated fishing. Now, science has stepped in to offer a new method to identify contraband fish. A €4 million pan-European project, launched in 2008 and called FishPopTrace, has devised a much-anticipated way to differentiate marine populations of the same species with up to 100% accuracy.
Regulatory agencies like those in the European Union are trying to crack down on the illegal fish trade, but the task is not easy. How does a manager tell the difference between, for example, an illegally harvested Northeast Arctic cod and a perfectly legal Eastern Baltic cod? They belong to the same species but come from very different populations.
The new approach relies on genetic variants called single-nucleotide polymorphisms. SNPs occur when tiny segments of DNA differ between populations. For example, the Northeast Arctic cod may have a C nucleotide in the middle of a gene, whereas the Eastern Baltic cod may instead have a T in the same position.
Connect With Us:
Audio: Using Computing to Advance Toxicology
Chemicals have changed our lives, providing new products and capabilities, but sometimes causing harm to ourselves and the environment... (click the link above to read more).
To view all multimedia content, click "Latest Multimedia."
Receive notification when new content is posted from the entire website, or choose from the customized feeds available.