Occurrence and trophodynamics of marine lipophilic phycotoxins in a subtropical marine food web

Jing LI, Yuefei RUAN, Yim Ling MAK, Xiaohua ZHANG, Chung Wah James LAM, Kenneth M. Y. LEUNG, Paul K. S. LAM

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12 Citations (Scopus)

Abstract

Marine lipophilic phycotoxins (MLPs) are produced by toxigenic microalgae and cause foodborne illnesses. However, there is little information on the trophic transfer potential of MLPs in marine food webs. In this study, various food web components including 17 species of mollusks, crustaceans, and fishes were collected for an analysis of 17 representative MLPs, including azaspiracids (AZAs), brevetoxins (BTXs), gymnodimine (GYM), spirolides (SPXs), okadaic acid (OA), dinophysistoxins (DTXs), pectenotoxins (PTXs), yessotoxins (YTXs), and ciguatoxins (CTXs). Among the 17 target MLPs, 12, namely, AZAs1-3, BTX3, GYM, SPX1, OA, DTXs1-2, PTX2, YTX, and the YTX derivative homoYTX, were detected, and the total MLP concentrations ranged from 0.316 to 20.3 ng g-1wet weight (ww). The mean total MLP concentrations generally decreased as follows: mollusks (8.54 ng g-1, ww) > crustaceans (1.38 ng g-1, ww) > fishes (0.914 ng g-1, ww). OA, DTXs, and YTXs were the predominant MLPs accumulated in the studied biota. Trophic dilution of the total MLPs was observed with a trophic magnification factor of 0.109. The studied MLPs might not pose health risks to residents who consume contaminated seafood; however, their potential risks to the ecosystem can be a cause for concern. Copyright © 2021 American Chemical Society.

Original languageEnglish
Pages (from-to)8829-8838
JournalEnvironmental Science & Technology
Volume55
Issue number13
Early online dateJun 2021
DOIs
Publication statusPublished - Jul 2021

Citation

Li, J., Ruan, Y., Mak, Y. L., Zhang, X., Lam, J. C. W., Leung, K. M. Y., & Lam, P. K. S. (2021). Occurrence and trophodynamics of marine lipophilic phycotoxins in a subtropical marine food web. Environmental Science & Technology, 55(13), 8829-8838. https://doi.org/10.1021/acs.est.1c01812

Keywords

  • Marine lipophilic phycotoxin
  • Homoyessotoxin
  • Food web transfer
  • Trophic dilution
  • South China Sea

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