Liza ramada Juveniles after Exposure to the Toxic Dinoflagellate Vulcanodinium rugosum: Effects on Fish Viability, Tissue Contamination and Microalgae Survival after Gut Passage

Type Article
Date 2022-06
Language English
Author(s) Bouquet Aurelien1, Perdrau Marie Anaïs1, Laabir Mohamed2, Foucault Elodie1, Chomérat NicolasORCID3, Rolland Jean-Luc1, Abadie EricORCID1, 4
Affiliation(s) 1 : MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, 87 Avenue Jean Monnet, 34200 Sète, France
2 : MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, 34095 Montpellier, France
3 : IFREMER, Station de Biologie Marine, Place de la Croix, 29900 Concarneau, France
4 : IFREMER, Biodivenv, 79 Route de Pointe Fort, 97231 Martinique, France
Source Toxins (2072-6651) (MDPI AG), 2022-06 , Vol. 14 , N. 6 , P. 401 (17p.)
DOI 10.3390/toxins14060401
Note This article belongs to the Special Issue Effects of Harmful Algal Blooms on Aquatic Organisms
Keyword(s) Vulcanodinium rugosum, Liza ramada, contamination, pinnatoxins, portimines, food chain, fish, dissemination
Abstract

Pinnatoxins (PnTX) and Portimines (Prtn), two toxins produced by the benthic dinoflagellate Vulcanodinium rugosum, are known to be lethal to mice after intraperitoneal or oral administration. They are also known to accumulate in shellfish such as mussels and clams, but their effect on fish and the upper food chain remains unknown. In this work, juveniles of the fish Liza ramada (Mullet) were exposed to a strain of V. rugosum producing PnTX G and Prtn A. The fishes’ viability and contamination were recorded at times interval. Results showed that L. ramada juveniles were able to feed on V. rugosum and that their tissues could be contaminated by PnTX G and Prtn A without impact on fish viability. Furthermore, the microalgae temporary cysts survived and germinated after fish gut passage. This study showed the potential of L. ramada to transfer PnTX and Prtn toxins to the upper food chain and to disseminate V. rugosum in environment.

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Bouquet Aurelien, Perdrau Marie Anaïs, Laabir Mohamed, Foucault Elodie, Chomérat Nicolas, Rolland Jean-Luc, Abadie Eric (2022). Liza ramada Juveniles after Exposure to the Toxic Dinoflagellate Vulcanodinium rugosum: Effects on Fish Viability, Tissue Contamination and Microalgae Survival after Gut Passage. Toxins, 14(6), 401 (17p.). Publisher's official version : https://doi.org/10.3390/toxins14060401 , Open Access version : https://archimer.ifremer.fr/doc/00776/88807/