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HABs taxon details
original description
Lundholm, N., Moestrup, Ø., Hasle G.R. & Hoef-Emden, K. 2003. A study of the <i>Pseudonitzschia pseudodelicatissima</i>/<i<cuspidata</i> complex (Bacillariophyceae): what is <i>P. pseudodelicatissima</i>? J. Phycol. 39: 797-813. [details]
original description
Lundholm, N., Moestrup, Ø., Hasle, G.R. & Hoef-Emden, K. (2003). A study of the Pseudo-Nitzschia pseudodelicatissima complex (Bacillariophyceae): What is P. pseudodelicatissima?. <em>Journal of Phycology.</em> 39: 797-813., available online at https://doi.org/10.1046/j.1529-8817.2003.02031.x
page(s): p. 801; fig. 2:A-G [details] Available for editors 
context source (Introduced species)
Katsanevakis, S.; Bogucarskis, K.; Gatto, F.; Vandekerkhove, J.; Deriu, I.; Cardoso A.S. (2012). Building the European Alien Species Information Network (EASIN): a novel approach for the exploration of distributed alien species data. <em>BioInvasions Records.</em> 1: 235-245., available online at http://easin.jrc.ec.europa.eu [details] Available for editors
basis of record
Fourtanier, E. & Kociolek, J. P. (compilers). (2011). Catalogue of Diatom Names. California Academy of Sciences, On-line Version. Updated 2011-09-19., available online at http://researcharchive.calacademy.org/research/diatoms/names/index.asp [details]
additional source
Moestrup, Ø., Akselman, R., Cronberg, G., Elbraechter, M., Fraga, S., Halim, Y., Hansen, G., Hoppenrath, M., Larsen, J., Lundholm, N., Nguyen, L. N., Zingone, A. (Eds) (2009 onwards). IOC-UNESCO Taxonomic Reference List of Harmful Micro Algae., available online at http://www.marinespecies.org/HAB [details]
additional source
Lutaenko, K.A.; Furota, T.; Nakayama; S.; Shin, K.; Xu, J. (2013). Atlas of Marine Invasive Species in the NOWPAP Region. Beijing: NOWPAP DINRAC (Northwest Pacific Action Plan, Data and Information Network Regional Center). 189 pp. [details] 
additional source
Martin J.L., Haya K., Burridge L.E. & Wildish D.J. 1990. <i>Nitzschia pseudodelicatissima</i> – a source of domoic acid in the Bay of Fundy, eastern Canada.. Mar. Ecol. Progr. Ser. 67: 177-182. [details]
additional source
Lundholm N., Skov J., Pocklington R.G. & Moestrup Ø. 1997. Studies on the marine planktonic diatom <i>Pseudo-nitzschia</i> II. Autecology of <i>P. pseudodelicatissima</i> (Hasle) Hasle, based on isolates from Danish coastal waters. Phycologia 36: 381-388. [details]
From regional or thematic species database
Distribution Probably cosmopolitan. It has been recorded from both cold water and warm water areas and from both hemispheres. [details]
Harmful effect Strains from e.g. Canada, Chile, Denmark and Tunisia has been found to produce domoic acid. The amounts of DA vary from undetectable up to 0.221 pg cell-1. [details]
Morphology P. calliantha belong to the morphological P. pseudodelicatissima-complex, comprising species with narrow valves (ca. 1.5-2.5µm), a central nodule and uniseriate striae.
P. calliantha is mainly characterised by
* narrow valve width: 1.3-1.8µm
* poroids with several sectors (4-10) [details]
Taxonomy P. calliantha has previously been included in P. pseudodelicatissima sensu lato. At least some of the material described as toxic in previous references (as P. pseudodelicatissima) belong to P. calliantha. [details]
From editor or global species database
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Present 