Ostreopsis cf. ovata Bloom in Currais, Brazil: Phylogeny, Toxin Profile and Contamination of Mussels and Marine Plastic Litter
| Type | Article | ||||||||
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| 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 Nicolas 3, Herve Fabienne4, Hess Philipp4, Mafra Luiz1, 4 |
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| 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 |
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| Source | Toxins (2072-6651) (MDPI AG), 2019-08 , Vol. 11 , N. 8 , P. 446 (22p.) | ||||||||
| DOI | 10.3390/toxins11080446 | ||||||||
| WOS© Times Cited | 33 | ||||||||
| 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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