The First Observation of Domoic Acid in Plankton Net Samples from the Sea of Marmara, Turkey

Dursun, Fuat; Yurdun, Türkan; Ünlü, Selma

doi:10.1007/s00128-015-1704-4

Cited by 12 publications

(9 citation statements)

References 20 publications

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“…High amount of particulate matter (i.e., high turbidity) linked to water mixing and river inputs can limit light availability and consequently inhibit photosynthesis and growth. This light attenuation can result in the limitation of both the spatial and temporal distribution of Pseudonitzschia as demonstrated in estuarine and coastal systems (Dursun et al, 2016;. These studies are consistent with the P. seriata complex distribution pattern in the Southern Bight of the North Sea (SBNS), the species being abundant when turbidity was low (e.g.…”

Section: Environmental Factors Drivesupporting

confidence: 78%

Pseudo-nitzschia sp. diversity and seasonality in the southern North Sea, domoic acid levels and associated phytoplankton communities

Delegrange

Lefebvre

Gohin

et al. 2018

Estuarine, Coastal and Shelf Science

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The diversity, toxicity and seasonality of Pseudo-nitzschia sp. were investigated from February to November 2012 in the southern Bight of the North Sea (SBNS) along the French coast. The identification of Pseudo-nitzschia species in this area was addressed for the first time in this study. Our results revealed a low species richness (3 distinct species) in association with moderate (102 pg mL −1) to high (263 pg mL −1) domoic acid (DA) levels in autumn and spring, respectively. Pseudo-nitzschia succession corresponded to the dominance of P. delicatissima in April-May (86% of total diatoms) as a co-occurring species of the Phaeocystis globosa bloom. Following the Phaeocystis bloom (May-September), P. pungens dominated markedly over P. fraudulenta and P. delicatissima and was the only species present in autumn, although at low abundance (<1000 cell L −1). The results of this study support the idea that Pseudo-nitzschia seasonality in the SBNS relies principally on temperature and nutrient availability (DIN and silicates), which, in turn, depend on locally fluctuating environmental conditions (rainfalls and winds). This study highlights the potential for the SBNS to be a potential risk area in regard to the possible impacts of DA on marine resources and the DA transfer through marine food webs. This is of particular concern since DA concentration in seawater was not systematically correlated to potentially toxic Pseudo-nitzschia abundance. Highlights ► Low Pseudo-nitzschia sp. diversity (three species) in the southern North Sea. ► Domoic acid levels reached 263 pg mL −1 in May 2012, 83% as dissolved DA. ► Strong species seasonality driven by temperature and nutrient availability (DIN and silicates). ► Autumnal DA concentrations could be attributed to P. pungens. ► DA concentration was not systematically correlated to Pseudo-nitzschia spp. abundance.

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Section: Environmental Factors Drivesupporting

confidence: 78%

Pseudo-nitzschia sp. diversity and seasonality in the southern North Sea, domoic acid levels and associated phytoplankton communities

Delegrange

Lefebvre

Gohin

et al. 2018

Estuarine, Coastal and Shelf Science

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“…The diatom Nitzschia pungens f. multiseries (currently Pseudo-nitzschia multiseries ) was later identified as the producing organism in the area [ 6 ]. Since then, this toxin has been recorded in many locations around the world including Europe [ 7 , 8 , 9 , 10 , 11 ], North America [ 12 , 13 , 14 , 15 , 16 , 17 ], South America [ 18 ], Oceania [ 19 ], Asia [ 20 , 21 , 22 , 23 , 24 , 25 , 26 ] and Africa [ 27 , 28 , 29 ]. DA, beside its effect on humans, also has severe effects on other marine mammals, such as sea lions [ 30 , 31 , 32 , 33 ], sea otters [ 34 ], different cetaceans [ 35 , 36 ] and birds [ 37 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Distribution of Domoic Acid in the Digestive Gland of the King Scallop Pecten maximus

Blanco

Mauríz

Álvarez

2020

Toxins

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The king scallop Pecten maximus retains the amnesic shellfish poisoning toxin, domoic acid (DA), for a long time. Most of the toxin is accumulated in the digestive gland, but this organ contains several cell types whose contribution to the accumulation of the toxin is unknown. Determining the time-course of the depuration by analyzing whole organs is difficult because the inter-individual variability is high. A sampling method, using biopsies of the digestive gland, has been developed. This method allows for repetitive sampling of the same scallop, but the representativeness of the samples obtained in this way needs to be validated. In this work, we found that the distribution of DA in the digestive gland of the scallops is mostly homogeneous. Only the area closest to the gonad, and especially its outer portion, had a lower concentration than the other ones, probably due to a transfer of the toxin to the intestinal loop. Samples obtained by biopsies can therefore be considered to be representative. Most of the toxin was accumulated in large cells (mostly digestive cells), which could be due to differences during the toxin absorption or to the preferential depuration of the toxin from the small cells (mostly secretory).

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“…A sample volume between 25 and 180 mL was filtered through a Whatman GF/C (0.45 μm, 47 mm Ø) glass fiber filter then kept at -20°C until extraction and HPLC analysis (Bates et al, 1991). As physical indicators, temperature and salinity measurements were recorded using a SBE 911 plus CTD system and a multi-parameter probe (YSI Professional Pro Plus) to trace changes in physical conditions, which could act as a trigger for domoic acid production (Dursun et al, 2016). All environmental data were used as the average of 0-20 m depths.…”

Section: Field Samplingmentioning

confidence: 99%

“…Until now, DA production has been reported in Golden Horn Estuary, Turkey (Dursun et al, 2017(Dursun et al, , 2018Tas et al, 2016). Only one study has revealed the relationship between DA and environmental factors and it focused on the smaller parts of the Sea of Marmara (Dursun et al, 2016). On the other hand, environmental factors that promote the production of DA are very complex and can be unique to regions (bays, gulfs, coastal zones or open seas) and seasons (Trainer et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

An assesment of domoic acid levels as a function of salinity-temperature variations in the Sea of Marmara

Dursun¹

2021

EgeJFAS

Self Cite

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This study presents the domoic acid (DA), responsible from Amnesic Shellfish Poisoning (ASP), levels of plankton net samples in the Sea of Marmara during April, July and October 2019. Plankton net samples were collected from 13 stations, which were located close to the Istanbul metropolitan area, and along the east and southwest parts of the Sea of Marmara. DA measurements were done by high-performance liquid chromatography (HPLC), using the diode-array detection (detection limit (LOD): 0.108 µg mL−1). Twenty-two out of the 26 plankton net samples (84.6%) were found to contain DA during the study period and the concentrations varied between 0.22 and 3.45 µg mL−1. Possible relationships between physical parameters (salinity-temperature) and DA concentrations were investigated. DA production was mainly controlled by salinity (r:0.47, p<0.05; n:26) along the study period. These data may be used to consider the probability of finding similar conditions in different parts of the Sea of Marmara in order to determine the potential risks of DA to local mussel aquaculture and fisheries.

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The First Observation of Domoic Acid in Plankton Net Samples from the Sea of Marmara, Turkey

Cited by 12 publications

References 20 publications

Pseudo-nitzschia sp. diversity and seasonality in the southern North Sea, domoic acid levels and associated phytoplankton communities

Pseudo-nitzschia sp. diversity and seasonality in the southern North Sea, domoic acid levels and associated phytoplankton communities

Distribution of Domoic Acid in the Digestive Gland of the King Scallop Pecten maximus

An assesment of domoic acid levels as a function of salinity-temperature variations in the Sea of Marmara

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