First detection of species of the potentially toxic genus Azadinium (Amphidomataceae, Dinophyceae) in tropical coastal waters of Brazil

Cavalcante, Kaoli Pereira; Susini-Ribeiro, Sylvia Maria Moreira; Tillmann, Urban

doi:10.1007/s40415-017-0435-7

Cited by 9 publications

(5 citation statements)

References 43 publications

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“…Contrary to A. anophagefferens, A. dexeteroporum was detected throughout the year with the highest relative sequence abundances in January, February, and June. Based on the previous studies, the species can also grow in a wide temperature range (0.6 ˚C to 28˚C), depending on the geographic origin of the strain (Percopo et al 2013;Tillmann et al 2015Tillmann et al , 2020Cavalcante et al 2018). Furthermore, based on six years of weekly data analyzed by metabarcoding and HTS-approach, the species was detected throughout the year in the Sea of Okhotsk, from water temperatures of -1.7 ˚C to around 20˚C (Sildever et al 2019).…”

Section: Common/dominant/toxin-producing Species Appearance Patternsmentioning

confidence: 88%

Plankton biodiversity and species co-occurrence based on environmental DNA – a multiple marker study

Sildever¹,

Laas²,

Kolesova³

et al. 2021

MBMG

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Metabarcoding in combination with high-throughput sequencing (HTS) allows simultaneous detection of multiple taxa by targeting single or several taxonomically informative gene regions from environmental DNA samples. In this study, a multiple-marker HTS approach was applied to investigate the plankton diversity and seasonal succession in the Baltic Sea from winter to autumn. Four different markers targeting the 16S, 18S, and 28S ribosomal RNA genes were employed, including a marker for more efficient dinoflagellate detection. Typical seasonal changes were observed in phyto- and bacterioplankton communities. In phytoplankton, the appearance patterns of selected common, dominant, or harmful species followed the patterns also confirmed based on 20 years of phytoplankton monitoring data. In the case of zooplankton, both macro- and microzooplankton species were detected. However, no seasonal patterns were detected in their appearance. In total, 15 and 2 new zoo- and phytoplankton species were detected from the Baltic Sea. HTS approach was especially useful for detecting microzooplankton species as well as for investigating the co-occurrence and potential interactions of different taxa. The results of this study further exemplify the efficiency of metabarcoding for biodiversity monitoring and the advantage of employing multiple markers through the detection of species not identifiable based on a single marker survey and/or by traditional morphology-based methods.

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Section: Common/dominant/toxin-producing Species Appearance Patternsmentioning

confidence: 88%

Plankton biodiversity and species co-occurrence based on environmental DNA – a multiple marker study

Sildever¹,

Laas²,

Kolesova³

et al. 2021

MBMG

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“…; Cavalcante et al . ). In many areas of the world, the presence of Amphidomataceae is accompanied by the detection of AZAs (Taleb et al .…”

Section: Introductionmentioning

confidence: 97%

Electron microscopy of a 1991 spring plankton sample from the Argentinean Shelf reveals the presence of four new species of the Amphidomataceae (Dinophyceae)

Tillmann

2018

Phycological Research

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The dinophycean family Amphidomataceae encompasses the genera Azadinium and Amphidoma, which attract considerable attention because of their production potential for azaspiracids, i.e. lipophilic polyether phycotoxins. Many new species of Amphidomataceae were described in the last decade, but the diversity probably is not fully explored yet. In a continuation of a previous study, Amphidomatacean diversity of the 1991 spring plankton bloom along the Argentinean shelf was investigated. Based on morphology as inferred from scanning electron microscopy, three new species of Amphidoma and one new Azadinium are described. Azadinium asperum sp. nov. differed in size and shape from other Azadinium and had a characteristically rough and slightly granular surface of thecal plates. Amphidoma trioculata sp. nov. and Amphidoma cyclops sp. nov. differed by shape from most other Amphidoma, and can be differentiated from one another by the presence/absence of a antapical pore and by the size of a ventral depression. Amphidoma alata sp. nov. was unique by a conspicuous wing-like sulcal list. Calculations based on the total number of small dinoflagellates and on relative scanning electron microscopy quantification indicated that density of all four species was fairly high (7-40 × 10 3 cells L −1 ), so a large number of cells could be investigated in the sample. A few more single cells in the sample are attributable to Amphidomataceae but do not belong to one of the described species. This indicates that the diversity of the group is still not fully explored.

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“…Interestingly, Az. luciferelloides has a wide distribution, ranging from cool slope Argentinean waters (Tillmann and Akselman 2016; present study) to tropical Brazilian waters (Cavalcante et al 2018). No cultured strain of the species is available yet, so its potential for AZA production is unclear.…”

Section: Azadinium Diversitymentioning

confidence: 87%

“…64-33.75;Akselman and Negri 2012), as well as during recent blooms on the external shelf and slope of El Rincón (temperatures 8-108C; Tillmann et al 2019). By contrast, in Brazilian coastal waters (temperatures 16-228S), Cavalcante et al (2018) found maximum Azadinium spp. (Az.…”

Section: Azadinium Diversitymentioning

confidence: 92%

Field observations of the dinoflagellate genus Azadinium and azaspiracid toxins in the south-west Atlantic Ocean

Fabro

Almandoz

Krock

et al. 2020

Mar. Freshwater Res.

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Some dinoflagellate species of the genera Azadinium and Amphidoma (Amphidomataceae) produce azaspiracids (AZA), a group of toxins responsible for gastrointestinal disorders in humans following the consumption of contaminated shellfish. In this study, we investigated the diversity, distribution and abundance of Azadinium and AZA from field plankton samples collected during four oceanographic expeditions that covered an extended area of the Argentine Sea during different seasons. Scanning electron microscopy analyses indicated the presence of five Azadinium species: Az. dexteroporum, Az. luciferelloides, Az. obesum, Az. asperum and Az. cf. poporum. Azadinium-like cells were frequently found and were even an abundant component of plankton assemblages, showing a wide latitudinal distribution, from ~38 to ~55.5°S, and occurring in a wide temperature and salinity range. High cell densities (up to 154000cellsL–1) occurred in northern slope and external shelf waters during spring. AZA-2 was detected in net samples from the 20- to 200-µm fractions by tandem mass spectrometry–liquid chromatography analysis, suggesting a transfer of AZA through the food web. Our results contribute to the knowledge of the worldwide occurrence of Azadinium species and AZA, and highlight the importance of amphidomatacean species as a potential source of AZA shellfish poisoning in the south-west Atlantic Ocean.

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First detection of species of the potentially toxic genus Azadinium (Amphidomataceae, Dinophyceae) in tropical coastal waters of Brazil

Cited by 9 publications

References 43 publications

Plankton biodiversity and species co-occurrence based on environmental DNA – a multiple marker study

Plankton biodiversity and species co-occurrence based on environmental DNA – a multiple marker study

Electron microscopy of a 1991 spring plankton sample from the Argentinean Shelf reveals the presence of four new species of the Amphidomataceae (Dinophyceae)

Field observations of the dinoflagellate genus Azadinium and azaspiracid toxins in the south-west Atlantic Ocean

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