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Database Central
Wastewater Organisms Database
Nostocoida limicola I and II
Purpose of Web Page
The purpose of this web page is to present the physical characteristics of a filamentous bacteria that is present in wastewater. Nostocoida limicola I is a bent and highly coiled filament. N. limicola has cells that are oval (0.6-0.8 µm wide) but are found to be closer to each other and the cell septa are almost indiscernible. The length of the filament can range from 100 to 200 µm and the majority of the time the trichome is found within the floc. N. limicola has no sheath and attached growth is rare. It stains Gram positive and Neisser positive.
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This photograph of Nostocoida limicola I was taken at a magnification of 400x. Notice the highly coiled filaments intertwined within the floc. |
This is a photomicrograph of Nostocoida limicola I at a magnification of 1000x. Again, notice the highly coiled nature of Nostocoida limicola I. If the photo is magnified 2.5x you can see the spherical cells. |
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This is Nostocoida limicola II at a magnification of 1000x. Notice the pearl necklace appearance. This is a very distinguishable feature of Nostocoida limicola II. Notice the spherical shaped cells. |
This lone Nostocoida limicola II filament sticking out of the floc has some strikingly discernible cells. Also, the few dead cells found on the trichome are a signal of stress. This is one of the signs of chlorination. |
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Date Page Last Revised: 19 January 2000
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