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Fig 1: Dinophysis sacculus Schematic diagram (ventral view)from Stein 1883.
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Sinophysis (sine-o-fi/fu-sis) ebriolum (Herdman) Balech 1956. The image on the left shows a cell in right lateral view. The cell is laterally compressed. The epicone is much smaller than the hypocone. The image on the right shows a cell in a mid-focal plane. The cells contain no plastids. The cells are thecate and have cingular lists.
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Durinskia (dew-rink-see-a) baltica (Levander 1894) Carty and Cox 1986. The images show cells in ventral view. The red stigma is visible in the sulcal area. The plastids are yellow-brown and multiple. The cingulum is in the middle of the cell.
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Pfiesteria (fist-ear-ee-a) small colourless dinoflagellate equatorial girdle in which one flagellum lies, another trailing. Probably misleading reports in the literature suggest that this organism has very polymorphic life cycles - held to be misleading because the case is based on non-pure cultures and supporting evidence includes images of taxa which clearly are related to other kinds of organisms. In certain areas within the US, this organism is held to be a major environmental threat because it is said to cause fish kills, but the less hysterical perspective is that the organism, with limited variation in form, may attack damaged tissue and eat it - hence the association with unhappy fish. Because of the issues of putative toxicity, correct identification needs expert input, which can be obtained from other sites such as
IOC Harmful Algal Bloom Program. Differential interference microscopy.
data on this strain.
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Togula britannica (Herdman) Flo Jorgensen, Murray et Daugbjerg 2004
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Sinophysis microcephalus observed in marine muds and sandy sediments in the vicinity of Broome, Western Australia in September 2003. This image was taken using phase contrast optics. This work was supported by the Australian Biological Resources Study.
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[taxonomy:genus=Gymnodinium]
Date:
23 Aug 2011
Location:
Small lake in Kent Ridge Park. Water margin with vegetation, brown sediment with organic detritus. Tadpoles resting nearby.
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
Scale:
20830 pixels/mm = 20.8 pixels/µm
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Ceratium fusus.
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Exuviaella lima.
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Faust, M. A. 358-1990, SEM: 67.91 x 50.94 µm; Stub No. 104; NMNH microscope PHILIPS XL30 ESEM W. The Lair, Twin Cays, Belize Jan. 29, 1991
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binucleate zygote stained with DAPI
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species Vancampote
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Faust, M. A. s.n., SEM: 61.98 x 46.5 µm; Stub No. 294; NMNH microscope PHILIPS XL30 ESEM LaB6. Gulf Stream, off Point Lookout, NC 9.11.02
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Faust, M. A. 3087-2009, SEM: 61984.49 x 46584.62 nm; Stub No. 403; NMNH microscope PHILIPS XL30 ESEM LaB6. Collected in the Gulf Stream Florida, off Indian River lagoon
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division cyst, large nucleus and green bodies
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white planozygote with red body emerges
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Mason, P. L. VIMS D315A, US National Herbarium Catalog Number 4157
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Faust, M. A. 2657-2004, SEM: 11866.5 x 8902.1 nm; Stub No. 321; NMNH microscope PHILIPS XL30 ESEM LaB6. Isolate from Twin Cays, Belize by Steve Kibler; Sample Pro-Lair
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Faust, M. A. 2995-2007, SEM: 103.3 x 77.64 µm; Stub No. 389; NMNH microscope PHILIPS XL30 ESEM LaB6. Plankton sample net tow (20 um).Boston Bay, Collected May 15, 2007
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Faust, M. A. 2654-2003, SEM: 106.86 x 80.17 µm; Stub No. 305; NMNH microscope PHILIPS XL30 ESEM W. Gulf Stream, off Indian River, Florida antapical view
