RT Journal Article
T1 An update on ciguatoxins and CTX-like toxicity in fish from different trophic levels of the selvagens islands (NE Atlantic, Madeira, Portugal)
A1 Reis Costa, Pedro
A1 Estevez Bastos, Pablo
A1 Soliño Alonso, Lucía
A1 Castro Alonso, David Miguel
A1 Rodrigues, Susana Margarida
A1 Timoteo, Viriato
A1 Leao Martins, José Manuel
A1 Santos, Carolina
A1 Gouveia, Neide
A1 Diogène, Jorge
A1 Gago Martínez, Ana Maria Consuelo
K1 3206.11 Toxicidad de Los Alimentos
K1 3105 Peces y Fauna Silvestre
K1 2301.03 Análisis Cromatográfico
AB The Selvagens Islands, which are a marine protected area located at the southernmost point of the Portuguese maritime zone, have been associated with fish harboring ciguatoxins (CTX) and linked to ciguatera fish poisonings. This study reports the results of a field sampling campaign carried out in September 2018 in these remote and rarely surveyed islands. Fifty-six fish specimens from different trophic levels were caught for CTX-like toxicity determination by cell-based assay (CBA) and toxin content analysis by liquid chromatography with tandem mass spectrometry (LC-MS/MS). Notably, high toxicity levels were found in fish with an intermediate position in the food web, such as zebra seabream (Diplodus cervinus) and barred hogfish (Bodianus scrofa), reaching levels up to 0.75 µg CTX1B equivalent kg−1. The LC-MS/MS analysis confirmed that C-CTX1 was the main toxin, but discrepancies between CBA and LC-MS/MS in D. cervinus and top predator species, such as the yellowmouth barracuda (Sphyraena viridis) and amberjacks (Seriola spp.), suggest the presence of fish metabolic products, which need to be further elucidated. This study confirms that fish from coastal food webs of the Selvagens Islands represent a high risk of ciguatera, raising important issues for fisheries and environmental management of the Selvagens Islands.
PB Toxins
SN 20726651
YR 2021
FD 2021-08-20
LK http://hdl.handle.net/11093/2505
UL http://hdl.handle.net/11093/2505
LA eng
NO Toxins, 13(8): 580 (2021)
NO European Food Safety Authority | Ref. GP/EFSA/AFSCO/2015/03
DS Investigo
RD 10-dic-2024