A new record of Azadinium spinosum (Dinoflagellata) from the tropical Mexican Pacific

Hernández‐Becerril, David U.; Barón-Campis, Sofía A.; Escobar-Morales, Sergio

doi:10.4067/s0718-19572012000300016

Cited by 18 publications

(15 citation statements)

References 13 publications

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“…In addition, the toxin profile of the A. poporum isolate from the Gulf of Mexico is identical with the profile of A. poporum from Argentinean shelf waters including the recently discovered AZA-2 phosphate (Tillmann et al, 2016), even though both isolates belong to different ribotypes: C (Argentinean isolate) and D (Gulf of Mexico isolate). In contrast, only AZA-1 was detected in mussels collected from Baja California, Mexico (García-Mendoza et al, 2014), consistent with the fact that A. spinosum is present in the Mexican Pacific (Herná ndez-Becerril et al, 2012). Interestingly, shellfish samples from Morocco (Taleb et al, 2006) and Portugal (Vale et al, 2008) show an AZA-profile with predominant AZA-2, followed by AZA-1, quite different from any shellfish sample from Ireland, Norway, Spain or France (Twiner et al, 2008).…”

Section: Toxin Profilesmentioning

confidence: 75%

“…Most Azadinium species were described from samples collected in European waters, but that does not mean that there is a restricted distribution of these small dinoflagellates. For example, Azadinium spinosum was also reported in the Mexican Pacific (Herná ndez-Becerril et al, 2012), and Azadinium poporum was found in Korea (Potvin et al, 2011), China , New Zealand (Smith et al, 2015) and Argentina (Tillmann et al, 2016). Azadinium diversity might be underestimated because their cells are rather small and molecular detection is not routinely carried out (Toebe et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Morphology, molecular phylogeny and azaspiracid profile of Azadinium poporum (Dinophyceae) from the Gulf of Mexico

et al. 2016

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Section: Toxin Profilesmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Morphology, molecular phylogeny and azaspiracid profile of Azadinium poporum (Dinophyceae) from the Gulf of Mexico

et al. 2016

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“…Geographic distribution of this clade appears to be wide and may increase to new areas as the analysis of the nanoplanktonic size fraction, to which most of these species belong, could progress. To our knowledge, Azadinium has been recorded in the North Sea, in sub-Arctic and central areas of the North Atlantic, in some localities of Atlantic European coasts, the Mediterranean Sea, the austral Southwest Atlantic, and in the eastern (China, Korea and New Zealand) and western (Mexico) Pacific (Akselman & Negri 2012;Hernández-Becerril et al 2012;Nézan et al 2012;Potvin et al 2012;Gu et al 2013;Percopo et al 2013;Tillmann et al 2014c;Kaufmann et al 2015;Smith et al 2016), as well as in the Black Sea and the Indian Ocean (see Tillmann et al 2014c). The most common situation reported so far in various regions was the detection of AZAs in shellfish before (if at all) the record of their causative organisms in the planktonic realm.…”

Section: Introductionmentioning

confidence: 96%

Revisiting the 1991 algal bloom in shelf waters off Argentina: Azadinium luciferelloides sp. nov. (Amphidomataceae, Dinophyceae) as the causative species in a diverse community of other amphidomataceans

Tillmann

Akselman

2016

Phycological Research

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SUMMARY Species of the marine dinophycean genera Azadinium and Amphidoma (Amphidomataceae) mostly attract attention because of their production potential of the lipophilic polyether phycotoxin azaspiracid (AZA). The genus Azadinium probably has a very wide geographical distribution. Blooms of Azadinium from the continental shelf off Argentina have been observed back in the early 1990, but were just recently published, and the causative species, identified at that time as Azadinium cf. spinosum, could not unequivocally be determined. Here we retrospectively analyzed old archived samples of one of the South Atlantic Azadinium bloom from 1991 with electron microscopy. It turned out that the dominant nanoplanktonic dinophycean species in fact represent a new species which we describe here based on the morphology. Azadinium luciferelloides sp. nov. is a small (approximately 9–14 μm cell length) thecate dinoflagellate with the dominant plate pattern of the genus (Po, X, 4′, 3a, 6″, 6C, 5S, 6″′, 2″″), and with a small antapical spine. Azadinium luciferelloides differed from all other described species of Azadinium by the position of the ventral pore, which was located on the right ventral side in a notch of an otherwise symmetric pore plate. In addition, we recorded and documented the presence of other similar sized species of the Amphidomataceae in the samples. Our finding of Az. spinosum, Az. dalianense, Az. dexteroporum, and Amphidoma languida are the first record for the South Atlantic and thus describe an important range extension of these species. The diversity and importance of the Amphidomataceae for South Atlantic spring bloom plankton is now known and taxonomically documented, but cultures and/or analysis of AZA in field samples of the area are needed to clarify the AZA production potential of the local species and populations in order to finally evaluate the risk potential of AZA for AZA shellfish contamination in the Southwestern Atlantic region.

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“…Most species of Azadinium have been initially described from the North Sea but today, multiple records from various parts of the world are available (Akselman & Negri, 2012;Hernández-Becerril et al, 2012;Potvin et al, 2012;Gu et al, 2013;Luo et al, 2013;Percopo et al, 2013). However, knowledge about Amphidomataceae, and the presence of AZAs, in the (sub-)Arctic is still scarce (Poulin et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

First records of Amphidoma languida and Azadinium dexteroporum (Amphidomataceae, Dinophyceae) from the Irminger Sea off Iceland

Tillmann

Gottschling

Nézan

et al. 2015

Mar. Biodivers. Rec.

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Species of dinophycean Amphidomataceae are producers of phycotoxins classified as azaspiracids. We provide the first records of two of their constituent species, Amphidoma languida and Azadinium dexteroporum, for the Irminger Sea off Iceland. Morphological examination and molecular characterization, including uncorrected mean pairwise distances between sequences of the Internal Transcribed Spacer (ITS), doubtlessly assigned the sub-Arctic strain 2A11 to the reference of Amphidoma languida. Strain 2A11 produced AZA-38 and AZA-39, corresponding to the toxin profile described for the type material. The sub-Arctic isolate 1D12 differed significantly in terms of ITS genetic distance (p ¼ 0.04) from a Mediterranean Azadinium dexteroporum strain, but our morphological analysis did not reveal any major or stable diagnostic traits between the reference strain of Azadinium dexteroporum and the new strain described here. In contrast to the Mediterranean strain of Azadinium dexteroporum, the sub-Arctic strain 1D12 did not produce any known azaspiracids. The new records of Amphidoma languida and Azadinium dexteroporum from the Irminger Sea imply an important range extension of the species, formerly known from the northern and eastern Atlantic (Amphidoma languida) and from the Mediterranean area (Azadinium dexteroporum) only. Together with three new species of Azadinium recently described from the same expedition, the results clearly show that the biodiversity of the Amphidomataceae in the sub-Arctic is remarkably large.

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A new record of Azadinium spinosum (Dinoflagellata) from the tropical Mexican Pacific

Cited by 18 publications

References 13 publications

Morphology, molecular phylogeny and azaspiracid profile of Azadinium poporum (Dinophyceae) from the Gulf of Mexico

Morphology, molecular phylogeny and azaspiracid profile of Azadinium poporum (Dinophyceae) from the Gulf of Mexico

Revisiting the 1991 algal bloom in shelf waters off Argentina: Azadinium luciferelloides sp. nov. (Amphidomataceae, Dinophyceae) as the causative species in a diverse community of other amphidomataceans

First records of Amphidoma languida and Azadinium dexteroporum (Amphidomataceae, Dinophyceae) from the Irminger Sea off Iceland

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