Differential okadaic acid accumulation and detoxification by oysters and mussels during natural and simulated Dinophysis blooms

Mafra, Luiz L.; Ribas, Tatiany; Alves, Thiago; Proença, Luís Antônio de Oliveira; Schramm, Mathias Alberto; Uchida, Hajime; Suzuki, Toshiyuki

doi:10.1007/s12562-015-0882-7

Cited by 30 publications

(22 citation statements)

References 44 publications

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“…However, the majority of these studies is concentrated in the southern and southeastern coastal regions (e.g. Rosa and Buselato 1981;Kremer and Rosa 1983;Schmitt and Proença 2000;Islabão 2008;Mello et al 2010;Tavares et al 2009;Alves et al 2010;Haraguchi and Odebrecht 2010;Haraguchi 2010;Pedroso 2010;Islabão and Odebrecht 2011;Mafra et al 2014Mafra et al , 2015. On the northeast Brazilian coast, most of the studies were made in the state of Pernambuco and focused on the ecology of the phytoplankton community (e.g.…”

Section: Introductionmentioning

confidence: 99%

Dinoflagellates in tropical estuarine waters from the Maraú River, Camamu Bay, northeastern Brazil

Nunes¹,

Susini-Ribeiro²,

Cavalcante³

2019

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Dinoflagellates display great diversity in tropical regions and play an important role in the complex microbial food webs of marine and brackish environments. The goal of this study is to identify planktonic dinoflagellates and their distribution in the estuary of the Maraú River, Camamu Bay, state of Bahia, in a region with increasing use of shellfish farming. Samples were carried out monthly from August 2006 to July 2007 at four stations along the estuary. Plankton was sampled with a 20 μm mesh net. We identified 20 dinoflagellate species. The greatest species richness was observed in the genera Protoperidinium (five spp.), Tripos (four spp.), and Prorocentrum (three spp.). Based on literature, six species were classified as potentially harmful: Akashiwo sanguinea, Dinophysis caudata, Gonyaulax spinifera, Prorocentrum micans, Scrippsiella cf. acuminata, and Tripos furca. Protoperidinium venustum was recorded for the first time in coastal waters of Bahia.

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Section: Introductionmentioning

confidence: 99%

Dinoflagellates in tropical estuarine waters from the Maraú River, Camamu Bay, northeastern Brazil

Nunes¹,

Susini-Ribeiro²,

Cavalcante³

2019

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“…Only a few studies on the direct effects of DST and PTX on bivalve feeding exist [16][17][18]. The majority of studies on bivalves and DST and PTX are focused on depuration processes [6,17,[19][20][21][22][23][24] or physiological effects [25,26]. The physiological effects on bivalves of other harmful algal toxins have received far more attention [27][28][29][30][31][32][33][34][35][36].…”

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Effects of the DSP-toxic dinoflagellate Dinophysis acuta on clearance and respiration rate of the blue mussel, Mytilus edulis

et al. 2020

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Diarrheic Shellfish Poisoning toxins (DST) are a severe health risk to shellfish consumers and can be a major problem for the shellfish industry. Bivalve molluscs can accumulate DST via ingestion of toxic dinoflagellates like Dinophysis spp., which are the most prominent producers of DST. The effects of DST-containing dinoflagellate Dinophysis acuta on bivalve clearance and respiration rate were investigated in the blue mussel (Mytilus edulis) exposed to different algal densities in a controlled laboratory study. Results showed that M. edulis exposed to D. acuta displayed a reduced clearance rate compared to M. edulis exposed to equivalent bio-volumes of the non-toxic cryptophyte Rhodomonas salina. Furthermore, M. edulis ceased to feed on D. acuta after 1 to 4 h, depending on D. acuta densities. The quickest response was observed at the highest densities of D. acuta. The estimated total amount of DST accumulated in the M. edulis exceeded the regulatory limit for human consumption and furthermore, intoxication of the M. edulis seemed to occur faster at high cell toxicity rather than at high cell density. However, respiration rates were, similar, irrespective of whether M. edulis were fed single diets of R. salina, D. acuta or a mixed diet of both algal species. In conclusion, the DST-containing D. acuta had a severe negative effect on the clearance of M. edulis, which can affect the conditions of the M. edulis negatively. Hence, DST may cause low quality M. edulis, due to reduced feeding when exposed to DST-containing D. acuta. OPEN ACCESSCitation: Nielsen P, Krock B, Hansen PJ, Vismann B (2020) Effects of the DSP-toxic dinoflagellate Dinophysis acuta on clearance and respiration rate of the blue mussel, Mytilus edulis. PLoS ONE 15 (3): e0230176. https://doi.org/10.and project no. 10-078561 (https://ufm.dk/en/researchand-innovation/councils-and-commissions/formercouncils-and-commissions/the-danish-council-forstrategic-research?set_language=en&cl=en) to PN, PJH and BV. The funder had no role in study result in long-time closure of shellfish production areas, which can lead to severe economic consequences for the shellfish industry [2].Known DST-producers include several planktonic dinoflagellate species of the genus Dinophysis and a few epibenthic Prorocentrum species [1,3]. Pelagic Dinophysis spp. have been associated with DSP events in most cases. Okadaic acid (OA) together with its variants dinophysistoxins (DTX) and pectenotoxins (PTX) have all been identified in species of Dinophysis, and to accumulate in filter-feeding bivalves e.g. reviews by [4][5][6]. Mussels accumulate DST and PTX primarily in the digestive gland [7] and a number of studies have shown that DST undergo molecular transformations when ingested by bivalves. OA and DTX are esterified to a range of different fatty acid ester derivatives [6,[8][9][10]. PTX are also esterified but can be further transformed to PTX seco acids and seco acid esters [6,10,11]. The molecular transformation into fatty acid esters and seco acids has been suggested to be...

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“…, octopus(Mafra et al 2015b) and fishes(Mafra et al 2014) as potential vectors. With these factors in mind, and the likelihood of aquaculture diversification in these waters, Dinophysis blooms may become an increasingly important issue for Australia, and understanding their bloom dynamics and prediction may become an imperative.…”

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Modelling bloom formation of the toxic dinoflagellates Dinophysis acuminata and Dinophysis caudata in a highly modified estuary, south eastern Australia

Ajani

Larsson

Rubio³

et al. 2016

Estuarine, Coastal and Shelf Science

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Differential okadaic acid accumulation and detoxification by oysters and mussels during natural and simulated Dinophysis blooms

Cited by 30 publications

References 44 publications

Dinoflagellates in tropical estuarine waters from the Maraú River, Camamu Bay, northeastern Brazil

Dinoflagellates in tropical estuarine waters from the Maraú River, Camamu Bay, northeastern Brazil

Effects of the DSP-toxic dinoflagellate Dinophysis acuta on clearance and respiration rate of the blue mussel, Mytilus edulis

Modelling bloom formation of the toxic dinoflagellates Dinophysis acuminata and Dinophysis caudata in a highly modified estuary, south eastern Australia

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Differential okadaic acid accumulation and detoxification by oysters and mussels during natural and simulated Dinophysis blooms

Cited by 30 publications

References 44 publications

Dinoflagellates in tropical estuarine waters from the Mara&uacute; River, Camamu Bay, northeastern Brazil

Dinoflagellates in tropical estuarine waters from the Mara&uacute; River, Camamu Bay, northeastern Brazil

Effects of the DSP-toxic dinoflagellate Dinophysis acuta on clearance and respiration rate of the blue mussel, Mytilus edulis

Modelling bloom formation of the toxic dinoflagellates Dinophysis acuminata and Dinophysis caudata in a highly modified estuary, south eastern Australia

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Dinoflagellates in tropical estuarine waters from the Maraú River, Camamu Bay, northeastern Brazil

Dinoflagellates in tropical estuarine waters from the Maraú River, Camamu Bay, northeastern Brazil