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Karenia umbella sp. nov. (Gymnodiniales, Dinophyceae), a new potentially icthyotoxic dinoflagellate species from Tasmania, Australia

Citation

de Salas, MF and Bolch, CJS and Hallegraeff, GM, Karenia umbella sp. nov. (Gymnodiniales, Dinophyceae), a new potentially icthyotoxic dinoflagellate species from Tasmania, Australia, Phycologia, 43, (2) pp. 166-175. ISSN 0031-8884 (2004) [Refereed Article]

DOI: doi:10.2216/i0031-8884-43-2-166.1

Abstract

A new, potentially ichthyotoxic gymnodinioid dinoflagellate, Karenia umbella de Salas, Bolch & Hallegraeff, is described from Tasmanian coastal waters, Australia. It is characterized by light and electron microscopy of field samples and laboratory cultures, as well as large-subunit ribosomal DNA sequences and high-performance liquid chromatography pigment analyses of two cultured strains. The new Karenia species has a straight apical groove and contains fucoxanthin derivative carotenoid pigments, typical of the genus. Karenia umbella differs from its closest relative K. longicanalis in its larger size, longer epicone with a finger-like sulcal intrusion, asymmetrically shaped hypocone, irregularly shaped chloroplasts, and presence of six or eight radial furrows on the epicone surface. It differs from K. digitata in its significantly larger size and the shape of the epicone and hypocone. Genetically, this species is distinct from the dorsoventrally flattened Karenia species K. mikimotoi, K. brevis, and K. brevisulcata.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Phycology (incl. Marine Grasses)
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Fisheries - Aquaculture not elsewhere classified
Author:de Salas, MF (Dr Miguel de Salas)
Author:Bolch, CJS (Dr Christopher Bolch)
Author:Hallegraeff, GM (Professor Gustaaf Hallegraeff)
ID Code:32460
Year Published:2004
Web of Science® Times Cited:29
Deposited By:Plant Science
Deposited On:2004-08-01
Last Modified:2007-08-08
Downloads:0

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