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Fig 1: Noctiluca scintillans Schematic drawing of the ventral side of the cell
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Pronoctiluca (= Pelagorhynchus marinus Pavillard, 1917). Cells are 35-45 microns, nose flexible but cannot be retracted, that it has a thick flexible theca, inclusions of various sizes, and a large anterior nucleus, encysts but does so without loosing flagella. Sournia argues this is Pronoctiluca, a common dinoflagellate.
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Round inflated vegetative cells that can be more than 1 mm in diameter. Cells are unarmoured and bear one flagellum and a tentacle. No distinct anterior and posterior parts are discernible. This species can form extensive blooms which can lead to fish kills.
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Grove, O, Galicia, Spain
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Grove, O, Galicia, Spain
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Fig 1: Noctiluca scintillans Line drawing of gametes showing the position of the nucleus
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Fig 4: Lugol's preserved cell of Noctiluca scintillans
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Balea Maritima, Galicia, Espaa
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Fig 5: Lugol's preserved cell of Noctiluca scintillans showing the tentacle (Te)
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Noctiluca, zeevonk; Noctiluca, zeevonk.
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Plate 30. Noctiluca scintillans. Figs. 1-3. LM. Fig. 1. Cells large, balloon-shaped, nearly spherical, and colorless. A single flagellum housed in the ventral groove (arrow). Fig. 2. Cytoplasmic strands extend from nucleus (near the groove) to cell perifery. Engulfed cell (arrowheads). Fig. 3. Asexually dividing cell. Fig. 4. Line drawing. Deep and wide ventral groove (VG) houses the tooth (TO), an extension of the cell wall. Striated tentacle (TE).
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