November 29, 2019 — Each year, the fate of Northern California’s Dungeness crab season is in the hands of a few scientists in a quiet East Bay lab examining a small container of tan goo.
At the California Department of Public Health lab in Richmond, the goo is viscera, or the internal organs of a Dungeness crab, and the scientists study it to determine whether a neurotoxin called domoic acid is present.
While the commercial Dungeness crab season is on hold for an entirely different reason — a lawsuit over whale entanglements that postponed the season until Dec. 15 — three of the last four commercial Dungeness crab seasons were delayed after domoic acid, which is poisonous to humans, was found in local crustaceans. The neurotoxin can become present in crabs when algal blooms caused by rising ocean temperatures linger in local fishing waters during crab season. And with California crab fishermen capable of grossing $95 million a year during an uninterrupted season, domoic acid has resulted in tens of millions of dollars in lost revenue.