Abstract
Eels are a taxonomic group with great commercial importance due to their huge steaks. They have very high demand, especially the young ones. There are high morphological similarity and different market values between different species. For these reasons arises the need to develop techniques that allow identifying as many species as possible. In this study, a DNA method based on DNA phylogenetic analysis of sequences (forensically informative nucleotide sequencing) has been developed. This method has been used to authenticate 12 eel species, including the most important to commercial level (Anguilla anguilla, A. rostrata, A. japonica, A. australis), by means of the amplification of a 239-base pair (bp) fragment of the mitochondrial Cytochrome b (cyt b) gene. This method is useful to clarify questions related to the correct labeling of commercial products and to verify the traceability in commercial trade and for fisheries control.
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