WoRMS taxon details
Alexandrium australiense Sh.Murray, 2014
833063 (urn:lsid:marinespecies.org:taxname:833063)
accepted
Species
marine
John, U.; Litaker, R. W.; Montresor, M.; Murray, S.; Brosnahan, M. L.; Anderson, D. M. (2014). Formal revision of the <i>Alexandrium tamarense</i> species complex (Dinophyceae) taxonomy: The introduction of five species with emphasis on molecular-based (rDNA) cassification. <em>Protist.</em> 165(6): 779-804., available online at https://doi.org/10.1016/j.protis.2014.10.001 [details]
Note Bell Bay, Tasmania (Australia)
From regional or thematic species database
Type locality Bell Bay, Tasmania (Australia) [details]
Description Cells are as long as wide or slightly longer then wide; 35 ± 3.15 μm (min 30 μm, max 40 μm, n = 20) wide and 35 ± 2.93...
Description Ellipsoidal resting cysts, with a granular dark brown content and surrounded by a mucous layer.
Description Cells are as long as wide or slightly longer then wide; 35 ± 3.15 μm (min 30 μm, max 40 μm, n = 20) wide and 35 ± 2.93 μm (min 30 μm, max 40 μm,n = 20) long. Cell contains many golden brown elongated chloroplasts and a horseshoe-shaped nucleus located in the equatorial part of the cell. The epicone is helmet-shaped and the hypocone roughly trapezoidal. The cingulum is descending about one cingular height. The sulcus broadens in its antapical portion and is delimited on both sides by moderately developed sulcal lists. The cell surface is smooth and ornamented with many scattered small pores. The plate formula is: Po, 4', 6'', 5C, 8-10S, 5''', 2''''. Po is ornamented by several small pores and presents a comma-shaped foramen. A connecting pore is generally not present on Po. Plate 1' is irregularly rhomboidal, with longer apical right and antapical left sides; in its apical portion, it contacts Po and in its antapical portion it contacts plate sa. The ventral pore along the margin between Plate 1' and 4' is generally present. Plate 6'' is as wide as high or slightly wider than high. Plate 2'''' is transversely extended. Plate sp is pentagonal, and its length:width ratio is ∼ 1; a connecting pore may or may not be present on sp. Cells are almost always single, rarely found in chains of two cells in cultures. [details]
Description Ellipsoidal resting cysts, with a granular dark brown content and surrounded by a mucous layer.
Description Ellipsoidal resting cysts, with a granular dark brown content and surrounded by a mucous layer. [details]
Guiry, M.D. & Guiry, G.M. (2024). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Alexandrium australiense Sh.Murray, 2014. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=833063 on 2024-04-24
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original description
John, U.; Litaker, R. W.; Montresor, M.; Murray, S.; Brosnahan, M. L.; Anderson, D. M. (2014). Formal revision of the <i>Alexandrium tamarense</i> species complex (Dinophyceae) taxonomy: The introduction of five species with emphasis on molecular-based (rDNA) cassification. <em>Protist.</em> 165(6): 779-804., available online at https://doi.org/10.1016/j.protis.2014.10.001 [details]
basis of record Guiry, M.D. & Guiry, G.M. (2023). AlgaeBase. <em>World-wide electronic publication, National University of Ireland, Galway.</em> searched on YYYY-MM-DD., available online at http://www.algaebase.org [details]
toxicology source Murray, S., Wiese, M., Neilan, B.A., Orr, R.J.S., Salas, M., Brett, S., Hallegraeff, G. (2012). A reinvestigation of saxitoxin production and sxtA in the 'non-toxic' <i>Alexandrium tamarense</i> Group V clade. <em>Harmful Algae.</em> 18: 96-104., available online at http://www.sciencedirect.com/science/article/pii/S1568988312000935 [details]
basis of record Guiry, M.D. & Guiry, G.M. (2023). AlgaeBase. <em>World-wide electronic publication, National University of Ireland, Galway.</em> searched on YYYY-MM-DD., available online at http://www.algaebase.org [details]
toxicology source Murray, S., Wiese, M., Neilan, B.A., Orr, R.J.S., Salas, M., Brett, S., Hallegraeff, G. (2012). A reinvestigation of saxitoxin production and sxtA in the 'non-toxic' <i>Alexandrium tamarense</i> Group V clade. <em>Harmful Algae.</em> 18: 96-104., available online at http://www.sciencedirect.com/science/article/pii/S1568988312000935 [details]
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
From regional or thematic species database
Description Cells are as long as wide or slightly longer then wide; 35 ± 3.15 μm (min 30 μm, max 40 μm, n = 20) wide and 35 ± 2.93 μm (min 30 μm, max 40 μm,n = 20) long. Cell contains many golden brown elongated chloroplasts and a horseshoe-shaped nucleus located in the equatorial part of the cell. The epicone is helmet-shaped and the hypocone roughly trapezoidal. The cingulum is descending about one cingular height. The sulcus broadens in its antapical portion and is delimited on both sides by moderately developed sulcal lists. The cell surface is smooth and ornamented with many scattered small pores. The plate formula is: Po, 4', 6'', 5C, 8-10S, 5''', 2''''. Po is ornamented by several small pores and presents a comma-shaped foramen. A connecting pore is generally not present on Po. Plate 1' is irregularly rhomboidal, with longer apical right and antapical left sides; in its apical portion, it contacts Po and in its antapical portion it contacts plate sa. The ventral pore along the margin between Plate 1' and 4' is generally present. Plate 6'' is as wide as high or slightly wider than high. Plate 2'''' is transversely extended. Plate sp is pentagonal, and its length:width ratio is ∼ 1; a connecting pore may or may not be present on sp. Cells are almost always single, rarely found in chains of two cells in cultures. [details]Description Ellipsoidal resting cysts, with a granular dark brown content and surrounded by a mucous layer. [details]
Harmful effect According to John et al. (2014), one strain, ATNWB01, was toxic with a toxin profile that included GTX5, STX,C1,2 and deSTX analysed using high performance liquid chromatography coupled with fluorescence detection (HPLC-FD, Murray et al. 2012); the sxtA4 domain was present. [details]
Identification This species, belonging to the Alexandrium tamarense species complex, can only be unambiguously identified using genetic techniques. [details]
Type locality Bell Bay, Tasmania (Australia) [details]
Verified sequences Strain ATBB01 (John et al. 2014):
LSU rDNA KF908810
ITS/5.8S rDNA KF908817
SSU rDNA KF908802
[details]
