Contaminants and Killer Whale Health
Our research shows how contaminants accumulate in killer whales, impact their survival, and guide efforts to reduce harmful chemicals in the marine environment
Killer whales are especially vulnerable to chemical pollution because, as apex predators, they accumulate contaminants in their thick blubber over their long lifespans. We monitor toxic substances in the blubber of live whales through biopsy samples and in dead stranded individuals. Our studies have revealed high levels of legacy pollutants such as PCBs, banned decades ago, as well as emerging contaminants like unregulated brominated flame retardants.
These chemicals can affect whale health by disrupting immune and hormone systems, potentially increasing mortality and reducing reproduction. Using advanced tools like RNA-sequencing, we study how contaminants impact gene expression and overall health. By collaborating with environmental agencies and stakeholders, our research supports ongoing monitoring and helps inform policies to ban harmful chemicals, protecting killer whales and the wider marine environment.