Skip to main content
Premium Trial:

Request an Annual Quote

Fishy Fish

That fish on your dinner plate may not have been caught legally. To determine the difference between legally and illegally harvested fish, researchers have turned to gene markers, reports ScienceNow. Similar DNA fingerprinting efforts have been used to uncover mislabeled fish — Atlantic cod masquerading as red snapper. This new identification method, called FishPopTrace, relies on SNPs that vary among populations of Europe's four most over-harvested fish — cod, hake, herring, and sole. As researchers led by Gary Carvalho from Bangor University in the UK report in Nature Communications, their population-genomic-based approach could correctly identify 93 percent to 100 percent of fish. "Our results demonstrate how application of gene-associated markers will likely revolutionize origin assignment and become highly valuable tools for fighting illegal fishing and mislabeling worldwide," Carvalho and his colleagues write.

The Scan

Missed Early Cases

A retrospective analysis of blood samples suggests early SARS-CoV-2 infections may have been missed in the US, the New York Times reports.

Limited Journal Editor Diversity

A survey finds low diversity among scientific and medical journal editors, according to The Scientist.

How Much of a Threat?

Science writes that need for a provision aimed at shoring up genomic data security within a new US bill is being questioned.

PNAS Papers on Historic Helicobacter Spread, Brain Development, C. difficile RNAs

In PNAS this week: Helicobacter genetic diversity gives insight into human migrations, gene expression patterns of brain development, and more.