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Beggiatoa filament morphotypes

Diameter:

2.0- 4.0 µm

Diameter:

2.0-4.0 x 6.0 -8.0 µm
Beggiatoa

Shape:

Rectangles

Septa:

Sometimes you can see septa

Sulfur Granules:

N/A

Sheath:

No

Branching:

Description

Typically motile and usually contains either sulfur granules or PHB granules.

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Type 0914/0803 filament morphotype

Diameter:

1.0-1.2 µm

Diameter:

1.0 x 1.0 µm
type 0914_0803 cropped from 1000x phase contrast

Shape:

Square

Septa:

Yes - usually visible

Sulfur Granules:

N/A

Sheath:

Yes

Branching:

Description

Occasionally has square sulfur granules.

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Thiothrix Filament Morphotype

Diameter:

0.8- 2.8 µm

Diameter:

.8-1.4 x1.0-3.0 µm
Thiothrix cropped from 1000x phase contrast

Shape:

Rectangles

Septa:

Yes - visible

Sulfur Granules:

N/A

Sheath:

Yes

Branching:

Description

Regular cell shape, typically extends from flocs. Has the potential for sulfur granules.

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Type 021N Filament Morphotype

Diameter:

1.6-2.5 µm

Diameter:

1.6 X 2.5 µm
type 021N cropped from 1000x phase contrast

Shape:

Barrels, Rectangles, Discoid

Septa:

Yes - visible

Sulfur Granules:

N/A

Sheath:

No

Branching:

Description

Large filament that typically extends from the flocs or bridges flocs together. Irregular cell shape.

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Ryan Hennessy Wastewater Microbiology
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