California Department of Fish and Game
NEWS RELEASE 01:105 November 29, 2001
FOR IMMEDIATE RELEASE
Contact: Susan Ellis (916) 653-8983
Bill Paznokas (858) 467-4218
DFG Alerts Aquarium Owners of Dangerous Threat to California Sea Life
The Department of Fish and Game (DFG) wants to alert saltwater aquarium owners that a part of their hobby may present a significant danger to California's marine ecosystems if they ignore a new law that bans the popular algae Caulerpa taxifolia. The variety, one of nine species targeted under a new law, is found in pet supply shops that cater to saltwater aquaria hobbyists.
Legislation in September made it illegal to sell, possess, import, transport, transfer, give away or release alive in the state any of nine species of Caulerpa. Under the law, introduced by State Assemblyman Tom Harman of Huntington Beach, DFG has the authority to confiscate and destroy the marine algae.
Biologists blame Caulerpa for devastating marine ecosystems in the Mediterranean Sea and off the coast of Australia. They said the algae species transformed vast areas of the Mediterranean into watery wastelands.
The other varieties have the potential to spread indiscriminately in the California marine environment, or have appearance similar to Caulerpa taxifolia. They are cupressoides, mexicana, sertulariodes, floridana, ashmeadii, racemosa, verticillata, and scapelliformis.
DFG's Invasive Species Coordinator Susan Ellis said Caulerpa has been found in Agua Hedionda lagoon in San Diego County, and Huntington Harbour in Orange County. State, federal, and local authorities have already committed close to $3 million on eradication of these populations. As with any invasive species, DFG biologists said that complete eradication is expensive and often elusive. A coalition of federal, state, and local agencies, as well as private parties, formed the Southern California Caulerpa Action Team with the purpose of controlling the algae.
"Once the alga is introduced, it multiplies rapidly and blankets the entire bottom, smothering native organisms," Ellis said. "The problems probably occurred when people disposed of the contents of their aquaria by dumping them into these saltwater lagoons. Even a small fragment of the plant can become established and become a new infestation."
Ellis said the DFG hopes to launch a letter campaign directed at marine aquarium wholesalers and pet store retailers about the ban. Caulerpa is often shipped from Indonesia attached to live coral. Still, the public outreach will likely miss some hobbyists as there are more than 180 retailers just in the San Francisco Bay area. That number grows substantially in the Los Angeles and San Diego regions, she said.
Fish and Game wardens have already confiscated a shipment at one retail outlet and investigated one large shipment of the Caulerpa to a wholesale distributor. Violators face a civil penalty of up to $10,000 for each violation.