1. Cyanobacterial neurotoxin β-N-methylamino-L-alanine (BMAA) in shark fins.
- Author
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Mondo K, Hammerschlag N, Basile M, Pablo J, Banack SA, and Mash DC
- Subjects
- Animals, Atlantic Ocean, Cyanobacteria Toxins, Endangered Species, Florida, Food Contamination, Harmful Algal Bloom, Organ Specificity, Seafood analysis, Seasons, Species Specificity, Amino Acids, Diamino analysis, Animal Fins chemistry, Aquatic Organisms metabolism, Bacterial Toxins metabolism, Cyanobacteria metabolism, Neurotoxins metabolism, Sharks growth & development
- Abstract
Sharks are among the most threatened groups of marine species. Populations are declining globally to support the growing demand for shark fin soup. Sharks are known to bioaccumulate toxins that may pose health risks to consumers of shark products. The feeding habits of sharks are varied, including fish, mammals, crustaceans and plankton. The cyanobacterial neurotoxin β-N-methylamino-L-alanine (BMAA) has been detected in species of free-living marine cyanobacteria and may bioaccumulate in the marine food web. In this study, we sampled fin clips from seven different species of sharks in South Florida to survey the occurrence of BMAA using HPLC-FD and Triple Quadrupole LC/MS/MS methods. BMAA was detected in the fins of all species examined with concentrations ranging from 144 to 1836 ng/mg wet weight. Since BMAA has been linked to neurodegenerative diseases, these results may have important relevance to human health. We suggest that consumption of shark fins may increase the risk for human exposure to the cyanobacterial neurotoxin BMAA.
- Published
- 2012
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