FLUPSY bivalve heart rates 2024-01 to 2024-12

Groups of Mytilus galloprovincialis mussels and Magallana [Crassostrea] gigas oysters obtained from San Diego Bay at the Tuna Harbor site were outfitted with a MAX30101 pulse oximeter, glued to the exterior of the shell near the shell valve margin, in order to record movement of the heart using reflected infrared light. Groups of mussels and oysters were suspended on rope lines from the FLUPSY (floating upwelling system) at a depth of 30 cm (surface group) and 3 meters (bottom group). The surface deployment began on 2024-01-02 and remained active through 2024-12-19. The bottom deployment began on 2024-05-08 and remained active through 2024-10-18. The raw recorded values from the infrared sensor were subsequently converted into an estimate of heart rate in beats per minute.