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The cyst-theca relationship of Bitectatodinium tepikiense (Dinophyceae)

Lewis, Jane and Rochon, Andre and Ellegaard, Marianne and Mudie, Peta and Harding, Ian C. (2001) The cyst-theca relationship of Bitectatodinium tepikiense (Dinophyceae). European Journal of Phycology, 36 (2). pp. 137-146. ISSN 0967-0262

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Official URL: http://dx.doi.org/10.1080/09670260110001735288


Bitectatodinium tepikiense Wilson cysts, first described from Pleistocene sediments and generally associated with sediments in temperate to cold-temperate waters, were germinated to establish cultures. The motile thecate cells derived were referable to Gonyaulax digitale (Pouchet) Kofoid. For the first time detailed morphological information is given for the motile stage of this cyst-theca relationship. Cultures were re-encysted; the cultured cysts showed a range of morphology from spherical cysts to those with an apical boss. The taxonomy of Gonyaulax digitale and cyst-theca relationships within the Spiniferites plexus are discussed but, given the debate surrounding the status of the genera Gonyaulax and Spiniferites, no formal taxonomic reassignments are proposed. These observations confirm that establishing cultures of cyst taxa in problematic dinoflagellate groupings and meticulous high-resolution scanning electron microscopic observation of the specimens have great potential for elucidating cyst-theca relationships and clarifying dinoflagellate taxonomy.

Item Type:Article
Research Community:University of Westminster > Life Sciences, School of
ID Code:6109
Deposited On:24 Feb 2009 15:25
Last Modified:21 Dec 2009 16:54

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