Domoic acid (DA) is a harmful marine biotoxin produced by algae that accumulates in shellfish and other marine species, especially during harmful algal blooms (HAB). In their study, Sophie and co-authors used stable isotope analysis and DA measurements to investigate how DA is transferred through marine food webs in Monterey Bay. They found that anchovies are better sentinel species for coastal-pelagic regions than mussels, which did not contain any detectable levels of day. Their study demonstrates the efficacy of combining multiple biogeochemical tracers to improve HAB monitoring efforts and identify the main routes of DA transfer across habitats and trophic levels.
Read the open access paper here: Bernstein et al. 2021