Dreissena bugensis Andrusov, 1897

Quagga mussel

Description 1

Bivalve mollusc found in fresh and brackish water that can reach 40 mm in length and present different morphologies (colours that vary from black to light brown, or feature white and brown bands). Convex ventral side, placing it on this side it usually falls, whereas this does not occur with the zebra mussel (D.polymorpha). The differentiation of the larvae in respect of the zebra mussel is almost impossible from its morphology.

Biology 1

After fertilization, microscopic larvae develop over a few days, acquiring tiny shells. They are transported by the current for 3-4 weeks, feeding on cilia and searching for adequate substrate to settle. The mortality rate can reach 99% in this period. The show a preference for settling on hard substrate rather that gravel, sand or lime.

Habitat 1

Freshwater rivers, lakes and lagoons or with low salinity (less than 3%). Have been found at depths of 0-28 m.

Sources 1

Spanish Catalogue of Exotic Invasive Species, Global Invasive Species Database, U.S. Geological Survey..

Spanish Catalogue of Exotic Invasive Species - Non-arthropod invertebrates 1

http://www.magrama.gob.es/es/biodiversidad/temas/conservacion-de-especies/especies-exoticas-invasoras/ce_eei_invertebrados_na.aspx

Fuentes y Créditos

  1. Adaptado por INVASORES - administrador de un trabajo de (c) cartotragsatec, algunos derechos reservados (CC BY), http://natusfera.gbif.es/guide_taxa/22

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