Toxin-producing microalgae are responsible for numerous harmful algal blooms. Outbreaks of paralytic shellfish poisoning (PSP) pose the greatest threat to the fisheries and public health of Patagonian fjords. Toxicity results of this study. Concholepas are harvested from his Guaitecas Islands in Patagonia, Chile. The aim is to investigate how freezing and removal of the dye affects the detoxification process. 150 samples less than 90 mm in length were collected from this area. Live specimens were transported to a processing facility where they were measured, eviscerated, and halved. One of the parts was hand depigmented and the legs were cut in half. Mouse bioassay (MBA) and high-performance liquid chromatography with fluorescence detection and post-column oxidation (HPLC-FLD PCOX) were used to assess PSP toxicity in edible tissue from each paw. Local species toxicity ranged from 30 to 146 g STX-diHCL equivalents per site (CV = 43.83%) and 5.96 to 216.3 g STX-diHCL equivalents per site (CV = 34.63%) using MBA and HPLC. was. A generalized linear model found a negative correlation between individual body weight and toxicity. GTX2, STX, and neoSTX2 were most prevalent (>95%), as indicated by the toxicological profile. Once the pigment is removed, PSP's toxicity can be reduced by up to 90% and it remains an effective detox method. There was no discernible pattern produced by the freezing process in pigmented muscle. MBA does not attenuate the toxicity of PSP, but PCOX does (p<0.05). The study also describes the implications for management and commercialization of smallscale fisheries.
KeywordsPigment; Chilean Patagonia; Mba; HPLC-FLD PCOX
Published Date: 2023-01-31; Received Date: 2023-01-02
