HABs taxon details
Pseudo-nitzschia multiseries (Hasle) Hasle, 1995
|Parent|| ||Pseudo-nitzschia H.Peragallo, 1900|
|Orig. name|| ||Nitzschia pungens f. multiseries Hasle, 1965|
Nitzschia pungens f. multiseries Hasle, 1965 (Basionym)|
Pseudo-nitzschia pungens f. multiseries Hasle, 1993
original description Hasle, G. R. (1965). Nitzschia and Fragilariopsis species studied in the light and electron microscopes. II. The group Pseudonitzschia. Skrifter utgitt av Det norske Videnskaps-Akademi i Oslo. Mat.-Naturv. Klasse, Ny serie. vol 18, 45pp. [details]|
status source Hasle, G. R. (1995). Pseudo-nitzschia pungens and P. multiseries (Bacillariophyceae): nomenclatural history, morphology and distribution. i>J. Phycol. 31: 428-435.
note: The taxon is raised to species level [details]
subsequent type designation Hasle, G. R. (1974). Validation of the names of some marine planktonic species of Nitzschia (Bacillariophyceae). Taxon. 23: 425., available online at http://dx.doi.org/10.2307/1218752
note: Here the type of P. multiseries is designated [details]
new combination reference (of Pseudo-nitzschia pungens f. multiseries Hasle, 1993) Hasle G.R. 1993. Nomenclatural notes on marine planktonic diatoms. The family Bacillariaceae. Nova Hedwigia, Beiheft 106: 315-321
note: In this reference the taxon is transferred to the genus Pseudo-nitzschia [details]
type locality Oslofjord [details]|
|Links|| ||Genbank link to ITS rDNA sequence for morphologically verified strain of P. multiseries |
Genbank link to regions D1-D3 of LSU rDNA of morphologically verified strain of P. multiseries
Link to P. multiseries in Barcode of Life
To Encyclopedia of Life
From regional or thematic species database
Classification In phylogenetic analyses, P. multiseries clusters together with P. pungens as sister taxon; firmly within a larger cluster of Pseudo-nitzschia species (e.g. Lundholm et al 2002) [details]
Distribution P. multiseries is globally distributed from subpolar to subtropical waters: In Atlantic waters of Europe, North and South America and in Pacific waters of Northeast Asia and North America i.e. from ca. 65°N-15°N and 30°S -50°S [details]
Harmful effect P. multiseries produces domoic acid, and was the cause of the major harmful event in Canada 1987 caused by Amnesic Shellfish Poisoning (ASP), affecting more than 100 persons of which 3-4 died (Bates et al. 1989).
Since this incident, toxin producing strains of P. multiseries has been reported from globally distributed strains e.g. France (Amzil et al. 2001), Japan (Kotaki et al. 1999) and Canada (Evans et al. 2004).
Domoic acid has been found in amounts up to 21 pg/cell in cultured strains (e.g. Bates et al 1989, Douglas & Bates 1992)
Identification P. multiseries is morphologically similar to P. pungens, but can be differentiated by having 3-4 rows of poroids (P. pungens has 2), a poroid density of 5-7 (P. pungens has 2-5), and partly by a higher density of band striae. (Hasle 1995, Hasle et al. 1996). Distinguishing between the two species usually requires electron microscopy or molecular data.
Morphology Cells lanceolate in valve view, lanceolate-linear in girdle view, sharply pointed ends
Valve width 3.4-4.5µm
Valve face with 10-15 striae and fibulae in 10 µm.
No central nodule (and interspace)
Each stria with 3-4 rows of poroids, each with 5-7 poroids in 1µm
Striated bands, valvocopula with 19-30 striae in 10µm
Reproduction Sexual reproduction of P. multiseries has been described by Davidovich & Bates (1998) [details]
| || |
[Taxonomic tree] [Google] [Google scholar] [Google images]
| || ||Citation: Guiry, Michael D. (2015). Pseudo-nitzschia multiseries (Hasle) Hasle, 1995. In: Guiry, M.D. & Guiry, G.M. (2015). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Accessed through: Moestrup, Ø., Akselmann, R., Fraga, S., Hansen, G., Hoppenrath, M., Iwataki, M., Komárek, J., Larsen, J., Lundholm, N, Zingone, A. (Eds) (2009 onwards). IOC-UNESCO Taxonomic Reference List of Harmful Micro Algae at http://www.marinespecies.org/HAB/aphia.php?p=taxdetails&id=175738 on 2015-11-30|
| || || |