The golden mussel’s appearance in the Sacramento-San Joaquin Delta is its first confirmed detection in North America — and it has the potential to clog major water supply pumps.
Brazilian researcher Marcela Uliano da Silva shows samples of the golden mussel at the Carlos Chagas Filho Biophysics Institute in Rio de Janeiro, Brazil, in 2015. The golden mussel, which commonly grows to no more than an inch in length, is a hardy breeder, reproducing nine months a year by releasing clouds of microscopic larvae that float with the current to new territories.
Its appearance in the Sacramento-San Joaquin Delta is the mussel’s first confirmed detection in North America, according to a news release from the California Department of Fish and Wildlife. “If we’re lucky, and we stage a real eradication effort in the area where it’s presently found, it might not be too costly and would be worth it,” he said.
The department, she said, is also taking heightened measures to protect the State Water Project — the system of pumps, pipes, and canals that exports water south from the Delta. This enhanced vigilance to mitigate “mussel biofouling,” she said, requires more frequent inspections, as well as cleaning and flushing. The mussels, she said, are likely to build up in screens, strainers, and trashracks.— fixes itself to underwater surfaces, forming thick “reefs” built of millions of the animals.
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