Saxitoxins and okadaic acid group: accumulation and distribution in invertebrate marine vectors from Southern Chile

Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
Carlos GarciaHéctor R Contreras

Abstract

Harmful algae blooms (HABs) are the main source of marine toxins in the aquatic environment surrounding the austral fjords in Chile. Huichas Island (Aysén) has an history of HABs spanning more than 30 years, but there is limited investigation of the bioaccumulation of marine toxins in the bivalves and gastropods from the Region of Aysén. In this study, bivalves (Mytilus chilenses, Choromytilus chorus, Aulacomya ater, Gari solida, Tagelus dombeii and Venus antiqua) and carnivorous gastropods (Argobuccinum ranelliformes and Concholepas concholepas) were collected from 28 sites. Researchers analysed the accumulation of STX-group toxins using a LC with a derivatisation post column (LC-PCOX), while lipophilic toxins (OA-group, azapiracids, pectenotoxins and yessotoxins) were analysed using LC-MS/MS with electrospray ionisation (+/-) in visceral (hepatopancreas) and non-visceral tissues (mantle, adductor muscle, gills and foot). Levels of STX-group and OA-group toxins varied among individuals from the same site. Among all tissue samples, the highest concentrations of STX-group toxins were noted in the hepatopancreas in V. antiqua (95 ± 0.1 μg STX-eq 100 g(-1)), T. dombeii (148 ± 1.4 μg STX-eq 100 g(-1)) and G. solida (3232 ± 5.2 μg S...Continue Reading

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Citations

Nov 1, 2016·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Carlos GarcíaHéctor R Contreras
Feb 1, 2018·Marine Drugs·Jimmy AlarcanValérie Fessard
Feb 7, 2019·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Héctor R Contreras, Carlos García
May 18, 2019·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Daisy MasiasCarlos García
Jun 10, 2020·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Javiera Oyaneder-TerrazasCarlos García
Feb 20, 2021·Journal of Invertebrate Pathology·Andrew D TurnerBenjamin H Maskrey
Dec 7, 2018·Developmental and Comparative Immunology·José A Fernández RobledoMichael J Metzger

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