"The researchers applied two PCR tests to each sample. The first determined whether it was indeed shark meat. If positive, a second test identified the specific species."
"Almost 47.42% of the corvina samples collected in Ecuadorian markets turned out to be shark meat, reaffirming suspicions of ongoing mislabeling."
A genetic analysis revealed that 47.42% of corvina samples from Ecuadorian markets contained shark meat. Researchers revisited a decade-old study that found 26.67% of fish samples were mislabeled as shark meat. The recent study involved DNA extraction from fish fillets sold as corvina, using PCR tests to confirm the presence of shark meat and identify species. The findings indicate a significant increase in mislabeling, particularly in Andean cities where fish consumption is less frequent, complicating species identification for consumers.
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