Invasive Mussels Threaten California Water Supply

The invasive golden mussel, first detected in North America, has triggered states of emergency in San Joaquin and Yolo counties. Its presence in the Sacramento-San Joaquin Delta waterways poses a severe threat, potentially causing billions in losses for farmers and jeopardizing California's water supply.

The Invasive Species Corporation is at the forefront of developing a solution with zequanox, a product previously used for other invasive mussels. This biodegradable agent is now being re-evaluated to effectively eliminate the resilient golden mussels.

Research scientist Brady Hirschfeld expressed pride in contributing to the solution, while Pam Marrone highlighted the global significance of tackling such a destructive species. Zequanox works by being ingested by the mussels, leading to their demise without harming fish or native mollusks.

Field testing of zequanox is slated to begin this fall at a local marina in Stockton, the site of the initial invasion. San Joaquin County Supervisor Mario Gardea emphasized that mitigation, rather than complete eradication, is the focus, requiring a coordinated local, state, and federal response.

Future steps involve obtaining approval from the California Environmental Protection Agency for zequanox's use against golden mussels, with potential rollout in local waterways next year, possibly sooner under an emergency use permit.