Dreissena polymorpha (Pallas, 1771)

Zebra mussel
Dreissena_polymorpha_01 Dreissena_polymorpha_02

Description 1

Bivalve mollusc of 3 cm in length, similar in shape to marine mussels but with a zigzag yellowish and dark brown stripped pattern, from which it gets its common name. It builds dense colonies of thousands of individuals per square metre on hard substrates.

Biology 1

Two reproduction cycles per year, in spring and autumn. They are unisexual (there are some cases of hermaphroditism). The females reproduce when they are two years old and fertilisation occurs externally. Some days after the fertilisation, larvae are born, and they grow and are spread very quickly, giving rise to mussel-beds. They can tolerate changes in salinity and temperature and can survive for several days out of water. Resistant to chlorine. They feed on plankton and suspended organic matter.

Habitat 1

They live in a wide variety of superficial aquatic environments characterised by standing water or low flow waters: estuaries, lakes, ponds, reservoirs, rivers, marshes and other water bodies, both in built-up areas and natural areas.

Sources 1

Spanish Catalogue of Exotic Invasive Species, Project invasIBER

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/188

Más Información

NatuSfera Mapa