Harmful algal blooms work by disrupting food webs, Dr Caron said. Creatures such as shellfish, anchovies and sardines consume the toxins before then being eaten by larger marine mammals. "They eat a meal of those highly toxic fish and then they become toxified themselves, and if they get enough of that material, it of course can kill them, which is happening now," he said.
Blue-green algae to be investigated as possible cause of mystery neurological disease
A bacteria blamed in previous years for killing dogs that consumed it will be investigated as a potential cause of a mystery neurological brain disease observed in New Brunswick that has killed six people, says a researcher involved in the work. Researchers studying the disease plan on looking at cyanobacteria — also known as blue-green algae — and another toxin present in the region to see if there's a link between them and the disease, said Dr. Neil Cashman, a professor in the University of British Columbia's faculty of medicine, who's helping investigate the illness.