Mislabeling of Two Commercial North American Hake Species Suggests Underreported Exploitation of Offshore Hake

Transactions of the American Fisheries Society - Tập 138 Số 4 - Trang 790-796 - 2009
Eva García‐Vázquez1, José Luis Hórreo1,2, Daniel Campo1, Gonzalo Machado‐Schiaffino1, Iliana Bista3, Alexandros Triantafyllidis3, Francis Juanes2
1Department of Functional Biology, University of Oviedo, 33006, Oviedo, Spain
2Department of Natural Resources Conservation University of Massachusetts Amherst Massachusetts 01003 USA
3Department of Genetics, Development, and Molecular Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

Tóm tắt

Abstract

Mislabeling of North American merlucciid hakes in stock surveys and commercial market samples was detected by employing nuclear 5S ribosomal DNA (rDNA) and mitochondrial cytochrome b variation as molecular markers. Results showed that offshore hake Merluccius albidus is sold in European markets but is labeled as the morphologically similar silver hake M. bilinearis, which is the target species of the fishery. This suggests that offshore hake may be inadvertently included within silver hake landings, as the two species overlap in the southern area of silver hake distribution (approximately 41°‐35°N latitude near North American coasts). An inexpensive and technically easy technique based on polymerase chain reaction (PCR) amplification of a fragment of 5S rDNA and visualization of PCR products in agarose gels is recommended for routine species assignation in landings for purposes of exploitation estimates and for authentication of commercial hake species.

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Thông tin xuất bản

Transactions of the American Fisheries Society

Tập 138 Số 4

790-796

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