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OCCURRENCE OF TETRODOTOXIN AND PARALYTIC SHELLFISH TOXINS IN Phallusia nigra (TUNICATA, ASCIDIACEA) FROM THE BRAZILIAN COAST J. Venom. Anim. Toxins
FREITAS,J. C.; OGATA,T.; VEIT,C.H.; KODAMA,M..
We have already shown the presence of guanidine neurotoxins in calcareous red algae and mussels collected in the São Sebastião channel (State of São Paulo, Brazil). It is known that these neurotoxins comprise more than 25 analogues such as tetrodotoxin (TTX) and derivatives plus the paralytic shellfish toxins (PST) found in a variety of marine, freshwater and amphibious species. Filter feeding animals generally possess large amounts of these neurotoxins. The tunicates are sessil marine animals with a high rate of sea water filtration. The tunics and siphons of 50 specimens of Phallusia nigra were dissected and the visceral organs were immersed in methanol containing acetic acid 0.02 N pH 5.0. The extract was prepared by homogenization, filtration and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phallusia nigra; Tunicate; Paralytic shellfish toxins; Tetrodotoxin.
Ano: 1996 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301996000100004
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