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A review of Pseudo-nitzschia, with special reference to the Skagerrak, North Atlantic, and adjacent waters
Hasle, G.R.; Lange, C.B.; Syvertsen, E.E. (1996). A review of Pseudo-nitzschia, with special reference to the Skagerrak, North Atlantic, and adjacent waters. Helgol. Meeresunters. 50(2): 131-175. https://dx.doi.org/10.1007/BF02367149
In: Helgoländer Meeresuntersuchungen. Biologische Anstalt Helgoland: Hamburg. ISSN 0174-3597
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ANE, Skagerrak
Aquatic communities > Plankton > Zooplankton
Pseudo-nitzschia H. Peragallo in H. Peragallo & M. Peragallo, 1900 [WoRMS]
Skagerrak [Marine Regions]
Marien/Kust |
| Auteurs | | Top |
- Hasle, G.R.
- Lange, C.B.
- Syvertsen, E.E.
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| Abstract |
The Pseudo-nitzschia flora of the Skagerrak, North Atlantic, and adjacent waters, comprising P. pungens, P. multiseries, P. seriata, P. fraudulenta, P. heimii, P. delicatissima, and P. pseudodelicatissima, has been examined. Except for P. australis, all Pseudo-nitzschia species shown to produce the toxin domoic acid are present in the area although an outbreak of amnesic shellfish poisoning has never been reported. For comparison of morphological and taxonomic characters, Pseudo-nitzschia seriata f. obtusa, P. australis, P. subfraudulenta, P. subpacifica, P. lineola, P. inflatula, and P. cuspidata have been included in this investigation. Fine details of band structure and poroid occlusions, previously ignored or unresolved, have proven to add to the morphological distinction between P. pungens and P. multiseries, P. seriata and P. fraudulenta, P. seriata and P. australis, and P. delicatissima and P. pseudodelicatissima. Additional information on the structure of the proximal mantle compared to that of the valve face has revealed similarities in most of the species but differences between P. pungens and P. multiseries, The species' seasonal and long-term distributional patterns during the sampling period (October 1978 through September 1993) in the Skagerrak area are outlined. The greatest abundances of P. seriata, a cold-water species most likely restricted to the northern hemisphere, occurred in the spring, and those of the presumably cosmopolitan diatoms P. pungens, P. multiseries and P. pseudodelicatissima, in the autumn, Whereas P. multiseries seems to have decreased in abundance in the 1990s, P. pseudodelicatissima has apparently increased. |
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