Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
Specimen Records: 545
Specimens with Sequences: 527
Specimens with Barcodes: 524
Species: 11
Species With Barcodes: 11
Public Records: 504
Public Species: 11
Public BINs: 10
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Barcode data

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Wikipedia

Dreissenidae

The Dreissenidae are a family of small freshwater mussels, aquatic bivalve mollusks. They attach themselves to stones or to any other hard surface using a byssus. The shells of these bivalves are shaped somewhat like those of true mussels, and they also attach themselves to a hard substrate using a byssus, however this group is not at all closely related to true mussels, being more closely related to the venus clams (Veneridae).

Genera[edit]

Genera within the family Dreissenidae include:

Shell morphology[edit]

The shells of species of mussels in this family range from 20–40 mm in their maximum dimension, and about half as wide across. The shell outline is bent, with one margin usually somewhat incurved, and the other strongly curved outwardly. The shell is opaque and robust; in coloration it is yellowish, brownish or greyish, often with light-and-dark stripes.

Biology and ecology[edit]

These mussels breathe via complex gills. They live in clean, well oxygenated, lowland rivers, canals and reservoirs, attaching to stones and other hard surfaces; they will also tolerate slightly brackish water.

Geographical range of distribution[edit]

In Britain there is only one species from this family, Dreissena polymorpha, the zebra mussel, which is a troublesome invasive species. In the USA, both D. polymorpha and D. bugensis are problematic introduced species.

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