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- W2076571829 abstract "The uptake of paralytic shellfish poisoning (PSP) toxins and spirolides by the paddle crab (Ovalipes catharus) was investigated in two laboratory feeding trials using Greenshell™ mussels (Perna canaliculus), which had been fed toxic strains of either Alexandrium catenella or A. ostenfeldii, as a vector. Toxin uptake by crabs occurred in both feeding trials and was limited to the visceral tissue; no toxins were detected in the body meat or the gills. The first trial utilized a strain of A. catenella that had high total PSP toxin content, 442.3 ± 91.6 fmol/cell, that was dominated by low toxicity N-sulfocarbamoyl toxins resulting in a low cellular toxicity, 5.5 ± 1.6 pg STXequiv./cell. In this trial, toxin accumulation in the crabs was highly variable and ranged from 3.8 to 221.5 μg STXequiv./100 g, with 3/4 of the crabs exceeding the regulatory limit of 80 μg STXequiv./100 g. Eight days after feeding on toxic mussels the crabs still retained high levels of toxin suggesting that depuration rates in this species may be slow. In the second feeding trial, the A. ostenfeldii strain fed to mussels produced low levels of both PSP toxins (52.0 ± 19.5 fmol/cell; 1.4 ± 0.3 pg STXequiv./cell) and spirolides (1.8 pg/cell) and, as a result, the concentration transferred to crabs via the mussels was very low-PSP toxins ranged from 2.5 to 6.8 μg STXequiv./100 g and spirolides from 6 to 7 μg/kg. The results of our study demonstrate that paddle crabs are capable of acquiring both PSP toxins and spirolides and suggest that this may occur in the wild during a toxic shellfish event. It also highlights the need to remove the viscera before consumption." @default.
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- W2076571829 date "2009-01-01" @default.
- W2076571829 modified "2023-10-14" @default.
- W2076571829 title "Uptake of paralytic shellfish poisoning and spirolide toxins by paddle crabs (Ovalipes catharus) via a bivalve vector" @default.
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- W2076571829 doi "https://doi.org/10.1016/j.hal.2008.08.002" @default.
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