NOVEL UNARMORED DINOFLAGELLATES FROM THE TOXIGENIC FAMILY KARENIACEAE (GYMNODINIALES) : FIVE NEW SPECIES OF KARLODINIUM AND ONE NEW TAKAYAMA FROM THE AUSTRALIAN SECTOR OF THE SOUTHERN OCEAN(1)

© 2008 Phycological Society of America.

Bibliographische Detailangaben
Veröffentlicht in:Journal of phycology. - 1966. - 44(2008), 1 vom: 25. Feb., Seite 241-57
1. Verfasser: De Salas, Miguel F (VerfasserIn)
Weitere Verfasser: Laza-Martínez, Aitor, Hallegraeff, Gustaaf M
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:Journal of phycology
Schlagworte:Journal Article Kareniaceae Karlodinium LSU rDNA SEM Southern Ocean Takayama morphotaxonomy phylogeny polar
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520 |a Six new species of unarmored dinoflagellates in the family Kareniaceae were isolated from the Australian sector of the Southern Ocean in March 2006: Takayama tuberculata de Salas sp. nov, Karlodinium antarcticum de Salas sp. nov., Karl. ballantinum de Salas sp. nov., Karl. conicum de Salas sp. nov., Karl. corrugatum de Salas sp. nov., and Karl. decipiens de Salas et Laza-Martínez sp. nov. These new taxa were characterized using light and electron microscopy and sequencing of the LSU rDNA and are well supported based either on their morphology or molecular phylogeny. Takayama tuberculata, isolated just north of the polar front (55°-57° S), is genetically close to T. tasmanica, but smaller, with a significantly reduced number of amphiesmal vesicles. Medium-sized Karl. antarcticum, also isolated from near the polar front, is characterized by its long ovoid cell outline and very long apical groove. The small Karl. ballantinum has a very short apical groove. The large Karl. conicum has a distinct conical epicone and spherical posterior nucleus. The small Karl. corrugatum, from just south of the polar front, has distinctive parallel striations on the epicone surface and a distinctively shaped and placed ventral pore. The large and widespread Karl. decipiens, distributed through Southern Ocean waters from the polar front to Tasmanian coastal waters, and coastal Spain, has a helicoidal chloroplast arrangement and a large central nucleus. This study represents the first description of species in the potentially ichthyotoxic family Kareniaceae recorded from the Southern Ocean 
650 4 |a Journal Article 
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650 4 |a Karlodinium 
650 4 |a LSU rDNA 
650 4 |a SEM 
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650 4 |a Takayama 
650 4 |a morphotaxonomy 
650 4 |a phylogeny 
650 4 |a polar 
700 1 |a Laza-Martínez, Aitor  |e verfasserin  |4 aut 
700 1 |a Hallegraeff, Gustaaf M  |e verfasserin  |4 aut 
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