Nitzschia sp.

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Nitzschia sp. I
05:10
Captured from Atlantic Ocean 4/4/07 sample. Several specimen are followed. Recorded at 100x magnification on Microscope, with additional magnification of 4-∞ using digital camera.

Nitzschia sp. II
03:36
Nitschia sp. filmed from sample taken from Atlantic Ocean on April 4, 2007, interacting with some other microorganisms; thalassion sp. and pleurosigma sp.

Images at Phytoplankton Sample, 4/07/2007

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Alonella - Zooplankton

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The Genus Alonella is a group of very small waterfleas. Fine features of the carapace and postabdomen are used to distinguish among species - necessitating use of a high-powered light microscope at a minimum.
Source: Genus Alonella

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I am not certain yet which species this waterflea would be classified among, but I'm positive it's Zooplankton and fairly certain it falls within the genus Alonella.
This photo was created by fine-focusing at two separate depths and merging the photos. Nice seeing its wee little legs (antennae?) in detail.

More Photos and Video of Alonella

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Freshwater Micro-Organism

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Larger image (Magnified above at 40x)

Another freshwater critter of curiosity I caught dancing around among the algae. Though its green like algae, it moves about on its own. A noticeable feature, was the bright reddish spot...

Sharon wrote: I noticed on your page you have a very similar phytoplankton to the one I found.

But it is not the same species. I want to identify the species. Mine has a red dot on it, which looks like an eye, but I do not believe it is in an eye.

Please can you help me to identify this species?

Thank you, Sharon Mooney

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It's almost certainly a euglenoid.

IF it was flexible in motion (e.g., the cell body itself flexible, not just the flagella), it is almost certainly a member of the genus Euglena.

The red spot is in fact an 'eyespot' - it's a very primitive eye that allows the euglena to detect light -- a big advantage for a mobile photosynthesizer.

Dr. Rochelle Sturtevant
Extension Educator
NOAA
Great Lakes Sea Grant Network
Great Lakes Environmental Research Lab

Heres the same magnified by combination of microscope and camera





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Photos and Video of Euglena, Page One
Photos of Euglena, Page Two
Euglena Images, Page Three

Euglena Images, Page Four

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