California Department of Fish and Wildlife (CDFW) Director Charlton H. Bonham has delayed the opening of the commercial Dungeness crab fishery from Bodega Head, Sonoma County north to the Sonoma/Mendocino county line. The commercial Dungeness crab fishery south of this area will open as scheduled on Thursday, Nov. 15.
State health agencies determined that Dungeness crab in state waters from Bodega Head, Sonoma County north to the Sonoma/Mendocino county line have elevated levels of domoic acid and recommended a delay of the commercial fishery in this area.
The commercial delay includes ocean waters from the southern boundary of Bodega Head State Marine Reserve, Sonoma County (38° 18’ N. latitude) north to the Sonoma/Mendocino county line (38° 46.125’ N. latitude). Commercial take and/or possession of Dungeness crab is prohibited in these waters. North of the Sonoma/Mendocino county line, the Dungeness crab commercial season is not scheduled to open until Dec. 1. That opener is also subject to delay pending test results both for domoic acid as well as crab quality.
The area south of the southern boundary of the Bodega Head State Marine Reserve, Sonoma County to the California/Mexico border will open at 12:01 a.m. on Thursday, Nov. 15, 2018, to be preceded by an 18-hour gear setting period that would begin no earlier than 6:01 a.m. on Wednesday, Nov. 14.
This delay shall remain in effect until the Director of the Office of Environmental Health Hazard Assessment (OEHHA), in consultation with the State Public Health Officer at the California Department of Public Health (CDPH), determines that domoic acid no longer poses a significant risk to public health and recommends opening the fishery in this region. CDFW will continue to coordinate with CDPH and OEHHA to test domoic acid levels in Dungeness crab to determine when the Dungeness crab commercial fishery in this area can safely be opened.
Once a positive determination is made to open the fishery, CDFW may provide the fleet a minimum of 72-hour advance notice announcing when trap gear can be set.
Additional information on the commercial Dungeness fishery can be found here.
The recreational fishery for Dungeness crab opened in most areas of the state on Nov. 3 under a health warning issued by CDPH for Dungeness crab caught in Sonoma County. The recreational fishery remains closed in state waters from Patrick’s Point in Humboldt County north due to elevated levels of domoic acid.
Domoic acid is a potent neurotoxin produced by a naturally occurring marine alga, whose levels can be increased under certain ocean conditions, and can accumulate in shellfish, other invertebrates and sometimes fish. It causes illness and sometimes death in a variety of birds and marine mammals that consume affected organisms. At low levels, domoic acid exposure can cause nausea, diarrhea and dizziness in humans. At higher levels, it can cause persistent short-term memory loss, seizures and death.