Quagga Mussel Incident Susan Ellis California Department of Fish and Game September 13, 2007
Natural History Freshwater species Native to Ukraine and Russia A form of zebra mussels (Genus Dreissena ) Came to U.S. in late 1980’s (ballast water?) Very prolific: 1 million eggs/year Larvae free-swimming Adults can live at least a week out of water
California Concerns Spread readily – Vessels/Trailers/Water Environmental damage. Economic impacts. Eradication from Colorado River system unlikely.
What’s At Risk?
Dreissenid Mussel Range 1988
Range in 1998
Range February, 2007 Zebra mussel Quagga mussel Zebra mussel on boat trailers
Quagga Mussel in California Colorado River Lake Havasu Grass Bay, south of the Havasu Landing Resort Parker Dam South of Parker Dam Colorado River Aqueduct – 242 miles of the system Lake Skinner, Riverside County Lake Mathews, Riverside County San Vicente Reservoir, San Diego County Dixon Lake, San Diego County Lower Otay Reservoir, San Diego County
Quagga Mussel in the West
Incident Overview Invasive aquatic species Discovered in Lake Mead on January 6, 2007 Formed an Incident Command, developed coordinated response and appropriated state resources Found at Lake Mohave, Lake Havasu, MWD diversion intake structure
California Response Unified response using incident command system Agencies involved: Fish & Game, Water Resources, Food & Agriculture, Boating & Waterways, US Fish & Wildlife Service, Metropolitan Water District, City of San Diego Coordination with multi-state quagga mussel team for Lake Mead incident Governor appropriated deficiency >$2m for FY and >$5.4m in FY Legislation pending – AB1683 Wolk
Incident Command Structure
California Actions – Surveys Dive Surveys - Lower Colorado River and inland waters in southern California. Surface Surveys - all high priority waterbodies in the state.
California Actions – Inspections 24/7 inspections at CDFA Border Protection Stations (BPS) at Yermo, Needles, Vidal Jct. and Truckee
CDFA Border Protection Stations As of August 26, 2007: 59,241 boats checked 6,412 boats needing cleaning 50 confirmed Dreissenid mussel
CDFA / BPS – Watercraft Inspections by Week
CDFA / BPS – Watercraft Inspection by Day
CDFA / BPS – Watercraft in Need of Draining and/or Cleaning
California Actions – Outreach Public information and education Hotline 1 (866) Webpage quaggamussel/ quaggamussel/ Boater information
Ongoing Efforts Scientific Advisory Panel Outreach and training Multi-agency coordination Continued inspection, interdiction On-going sampling
Contact Information Hotline 1 (866) Webpage DFG Contact Susan Ellis, Invasive Species Coordinator (916)