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State genetic labs confirm golden mussel in Bay‑Delta; agencies ramp up eDNA surveillance
Summary
Department of Water Resources and partner labs confirmed Limnoperna fortunei (golden mussel) in the San Francisco Estuary in October 2024 and reported coordinated eDNA/qPCR surveillance and a planned SENTRI early‑warning program combining targeted qPCR and metabarcoding.
Sarah Stinson (Department of Water Resources genetic monitoring lab) described rapid interagency confirmation and scalable genetic monitoring following detection of the invasive golden mussel (Limnoperna fortunei) in October 2024.
Stinson said field crews first noticed an unidentified mussel at a Port of Stockton check station on Oct. 17; visual identifications and tissue Sanger sequencing were quickly corroborated by UC Davis and CDFA labs. DWR initiated qPCR testing (Pia et al. assay) and has…
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