Data/hora: 02/06/2024 15:44:16

Provedor de dados: | 5
País: | France
Título: | Ostreopsis cf. ovata Bloom in Currais, Brazil: Phylogeny, Toxin Profile and Contamination of Mussels and Marine Plastic Litter
Autores: | Tibiriçá, Carlos Eduardo J. A.; Leite, Isabel P.; Batista, Talita V. V.; Fernandes, Luciano F.; Chomérat, Nicolas; Herve, Fabienne; Hess, Philipp; Mafra, Luiz.
Data: | 2019-08
Ano: | 2019
Palavras-chave: | Harmful algal bloom; Benthic microalgae; Toxic dinoflagellates; Ovatoxin; Toxin transfer; Seafood safety; Marine pollution; Plastic litter; Biofilm formation.
Resumo: | 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
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00509/62037/66177.pdf

DOI:10.3390/toxins11080446

https://archimer.ifremer.fr/doc/00509/62037/

Editor: | MDPI AG
Formato: | application/pdf
Fonte: | Toxins (2072-6651) (MDPI AG), 2019-08 , Vol. 11 , N. 8 , P. 446 (22p.)

Fonte:

info:eu-repo/semantics/openAccess

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