The golden mussel’s appearance in the Delta is its first confirmed detection in North America — and could 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.
“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.”No one can be certain how the mussels got to California, but sources suspect they arrived the same way they are believed to have traveled to South America — in the bowels of commercial ships, where ballast water used to stabilize vessels at sea is often drained in the port of arrival.
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