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Morphology and taxonomy of toxic species in the Tamarensis group (Dinophyceae): Alexandrium excavatum (Braarud) comb. nov. and Alexandrium ostenfeldii (Paulsen) comb. nov.
Balech, E.; Tangen, K. (1985). Morphology and taxonomy of toxic species in the Tamarensis group (Dinophyceae): Alexandrium excavatum (Braarud) comb. nov. and Alexandrium ostenfeldii (Paulsen) comb. nov. Sarsia 70(4): 333-343. http://dx.doi.org/10.1080/00364827.1985.10419687
In: Sarsia. University of Bergen. Universitetsforlaget: Bergen. ISSN 0036-4827; e-ISSN 1503-1128, meer
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Aquatic communities > Plankton > Phytoplankton
Aquatic organisms > Noxious organisms > Poisonous organisms
Classification > Taxonomy
Ultrastructure
Alexandrium Halim, 1960 [WoRMS]; Dinophyta [WoRMS]; Gonyaulax Diesing, 1866 [WoRMS]
Marien/Kust |
| Auteurs | | Top |
- Balech, E.
- Tangen, K., meer
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| Abstract |
Using light microscopy and scanning electron microscopy the thecal and internal morphology of two taxa within the Gonyaulax tamarensis complex were investigated based on material collected in Oslofjorden, Norway. Combined with Braarud's unpublished information on his type material the observations indicate that the taxa are identical with Gonyaulax tamarensis LEBOUR var. excavata BRAARUD and G. tamarensis var. globosa BRAARUD which were described from Oslofjorden. Based on observations on infraspecific variations it is proposed that the genus concept of Alexandrium HALIM is extended to include species with direct contact between the plates Po and 1' and the new combinations Alexandrium excavatum (Braarud) comb. nov. and Alexandrium ostenfeldii (Paulsen) comb. nov. are proposed. Their plate formula is: Po, 4', 6 lambda-bar , 6C, 9-10S, 5''', 2'''' which includes one or two small accessory sulcal plates. Both species have a characteristic tabulation including a ventral pore. A. excavatum and probably A. ostenfeldii produce paralyzing shellfish toxins. New combinations for the related species Alexandrium peruvianum (BALECH & MENDIOLA) comb. nov. and Alexandrium depressum (GAARDER) comb. nov. are proposed. (DBO) |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
