Marketplace shrimp mislabeling in North Carolina

PLoS One. 2020 Mar 12;15(3):e0229512. doi: 10.1371/journal.pone.0229512. eCollection 2020.

Abstract

Seafood mislabeling occurs in a wide range of seafood products worldwide, resulting in public distrust, economic fraud, and health risks for consumers. We quantified the extent of shrimp mislabeling in coastal and inland North Carolina. We used standard DNA barcoding procedures to determine the species identity of 106 shrimp sold as "local" by 60 vendors across North Carolina. Thirty-four percent of the purchased shrimp was mislabeled, and surprisingly the percentage did not differ significantly between coastal and inland counties. One third of product incorrectly marketed as "local" was in fact whiteleg shrimp: an imported and globally farmed species native to the eastern Pacific, not found in North Carolina waters. In addition to the negative ecosystem consequences of shrimp farming (e.g., the loss of mangrove forests and the coastal buffering they provide), North Carolina fishers-as with local fishers elsewhere-are negatively impacted when vendors label farmed, frozen, and imported shrimp as local, fresh, and wild-caught.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Animals
  • Aquaculture / ethics*
  • Aquaculture / methods*
  • Conservation of Natural Resources / methods
  • DNA Barcoding, Taxonomic / methods
  • Ecosystem
  • North Carolina
  • Penaeidae / classification
  • Penaeidae / genetics*
  • Seafood / analysis
  • Seafood / economics
  • Shellfish / analysis
  • Shellfish / classification

Grants and funding

This study was supported by the Department of Biology at The University of North Carolina at Chapel Hill and funded by the QEP (Quality Enhancement Plan) CURE (Course-based Undergraduate Research Experience) initiative. The project was also partially funded by the National Science Foundation (OCE #1737071 to JB).