On-the-Ground Update

Harmful Algal Blooms Caused the Mortality of 913.5 MT of Salmon in the Seno de Reloncaví, Chile

Food Safety & Quality
Carlos Palma
Published Nov 28, 2023
The National Fisheries and Aquaculture Service (Sernapesca) in the Los Lagos region, Chile, has reported a new mass mortality event in the Seno de Reloncaví, specifically in the Group of Salmonid Concessions (ACS) No. 2.

Until W47, the area had only activated its action plans for Harmful Algal Blooms (HAB) due to high concentrations of the microalgae Thalassiosira pseudonana. In ACS N°2, there are 28 active cultivation centers with a total biomass of 49,727 metric tons (mt). Among these, 11 centers activated their action plans for HAB, and two activated action plans for Mass Mortality.

The reported mortality of salmon on Monday, November 27, amounted to 913.5 mt. Ongoing surveillance is being maintained in this area and surrounding ACS, as daily reports from the centers indicate the continued presence of micro-algae and irregular behavior of the fish.
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