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Shell Morphology
d Dreissena blanci

Photo: Lubomir Andreev

Triangular shape
Dorsal Surface
Rounded, with winglike extension
Lateral Surface
Distinct angle (carina) ascending at the beginning and extending almost along the whole shell length, located ventrolaterally
Ventral Surface
The posterior ventral surface is relatively flat
Ventral Margin
Straight or slightly curved
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Byssal Byssal groove almost in the middle of the ventral side

D. blanci,  Amvrakia Lake, Greece

The sample was obtained from Dr Christian Albrecht, Justus-Liebig-University Giessen.

The two valves are bilaterally symmetrical
Colour pattern
Not distinct stripes
Maximum shell length, mm

Dreissena polymorpha

Dreissena presbensis
Dreissena blanci

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This website is developed with support from the Bulgarian Science Fund, Ministry of Education, Youth and Science,
within the Project "Assessment and Management of Dreissena spp. Invasions in the Bulgarian Water Bodies",
Contract Number: DO-02-283/2008.

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