Abstract
In situ phytoplankton sampling over 24h was carried out in July 1985 during part of a monitoring program established by the Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) to survey the blooming of toxic dinoflagellates off the French coast. Analysis of the data suggested a vertical migration of Dinophysis sp. (acuminata?) populations through the sea-water column. These diurnal displacements should be taken into account in the course of monitoring surveys of diarrhetic shellfish poisoning (DSP). Culture assays which were performed in parallel remained unsuccessful. However, Dinophysis sp. survived in an enriched sea-water medium for 4 to 5 wk under low light intensity (8 to 10 W m-2) and constant temperature (16° to 18 °C). Cell ultrastructure, in pariticular the organization of chloroplasts, is described. All the combined results tend to confirm the photosynthetic capacity of this species.
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Communicated by J. M. Pérès, Marseille
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Clement, M.D., Clement, J.C., Moreau, A. et al. New ecological and ultrastructural data on the dinoflagellate Dinophysis sp. from the French coast. Mar. Biol. 97, 37–44 (1988). https://doi.org/10.1007/BF00391243
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DOI: https://doi.org/10.1007/BF00391243