Ostreopsis cf. ovata Bloom in Currais, Brazil: Phylogeny, Toxin Profile and Contamination of Mussels and Marine Plastic Litter

Type Article
Date 2019-08
Language English
Author(s) Tibiriçá Carlos Eduardo J. A.1, Leite Isabel P.1, Batista Talita V. V.1, Fernandes Luciano F.2, Chomérat Nicolas3, Herve Fabienne4, Hess PhilippORCID4, Mafra Luiz1, 4
Affiliation(s) 1 : Centro de Estudos do Mar, Universidade Federal do Paraná, Cx. Postal 61, Pontal do Paraná, PR 83255-976, Brazil
2 : Departamento de Botânica, Universidade Federal do Paraná, Cx. Postal 19031, Curitiba, PR 81531-990, Brazil
3 : LER BO, Station de Biologie Marine, IFREMER, Place de la Croix, F-29900 Concarneau, France
4 : Laboratoire Phycotoxines, IFREMER, Rue de l’Ile d’Yeu, 44311 Nantes, France
Source Toxins (2072-6651) (MDPI AG), 2019-08 , Vol. 11 , N. 8 , P. 446 (22p.)
DOI 10.3390/toxins11080446
Note This article belongs to the Special Issue Potentially Toxic Benthic Microorganisms in Freshwater and Marine Ecosystems
Keyword(s) Harmful algal bloom, benthic microalgae, toxic dinoflagellates, ovatoxin, toxin transfer, seafood safety, marine pollution, plastic litter, biofilm formation
Abstract

Ostreopsis cf. ovata is a toxic marine benthic dinoflagellate responsible for harmful blooms affecting ecosystem and human health, mostly in the Mediterranean Sea. In this study we report the occurrence of a summer O. cf. ovata bloom in Currais, a coastal archipelago located on the subtropical Brazilian coast (~25° S). This bloom was very similar to Mediterranean episodes in many aspects: (a) field-sampled and cultivated O. cf. ovata cells aligned phylogenetically (ITS and LSU regions) along with Mediterranean strains; (b) the bloom occurred at increasing temperature and irradiance, and decreasing wind speed; (c) cell densities reached up to 8.0 × 104 cell cm−2 on fiberglass screen and 5.6 × 105 cell g−1 fresh weight on seaweeds; (d) and toxin profiles were composed mostly of ovatoxin-a (58%) and ovatoxin-b (32%), up to 35.5 pg PLTX-eq. cell−1 in total. Mussels were contaminated during the bloom with unsafe toxin levels (up to 131 µg PLTX-eq. kg−1). Ostreopsis cells attached to different plastic litter, indicating an alternate route for toxin transfer to marine fauna via ingestion of biofilm-coated plastic debris

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Tibiriçá Carlos Eduardo J. A., Leite Isabel P., Batista Talita V. V., Fernandes Luciano F., Chomérat Nicolas, Herve Fabienne, Hess Philipp, Mafra Luiz (2019). Ostreopsis cf. ovata Bloom in Currais, Brazil: Phylogeny, Toxin Profile and Contamination of Mussels and Marine Plastic Litter. Toxins, 11(8), 446 (22p.). Publisher's official version : https://doi.org/10.3390/toxins11080446 , Open Access version : https://archimer.ifremer.fr/doc/00509/62037/