Phycotoxins in sharks and rays

The Indian River Lagoon (IRL) possesses a variety of marine megafauna that can serve as important wildlife indicators for public health issues as their ecology involves shared exposure routes with humans. However, these animals have not been assessed for their uptake of biotoxins produced by recurring harmful algal blooms (HABs). We are quantifying environmental toxin exposure via a field-based bio-monitoring program of indicator species (sharks, rays, and sea turtles) and their prey during bloom and non-bloom periods in the IRL. Additionally, we are evaluating trophic transfer mechanisms of HAB toxins through analyses of stable isotopic signatures from top predator and herbivore tissues. Concurrent analysis of physiological parameters will allow us to make inferences about the effects of HABs on animal health.

Collaborators: Mr. Adam Schaefer Dr. Annie Page-Karijan, Dr. Justin Perrault

Funding: Harbor Branch Oceanographic Institute Foundation

See more on this project https://www.fau.edu/hboi/flcchh