Cherax destructor Clark, 1936

Common yabby
Cherax_destructor_01 Cherax_destructor_02

Description 1

River crab with a smooth carapace and a pair of post-orbital ridges. They can reach up to 15-20 cm long with a weight of up to 320 grams. The claws, which have smooth edges, are large, they end in a point and have a reddish tone at their base. Their colouring varies depending on the turbidity of the water, but they tend to be blue-grey-green or brownish.

Biology 1

A omnivore with opportunistic eating habits, with plant matter predominating over everything else. When this is lacking, they can eat anything, including members of its own species. They dig tunnels to depths of between 50 cm to 2 m, causing great alterations to the terrain when the density of the population is high.

Habitat 1

A fresh water species that inhabits any type of aquatic ecosystem (rivers, streams, lakes, reservoirs, ponds, temporary ponds with an abundance of vegetation). They prefer muddy substrates and slightly turbulent waters. They are quite resistant to environmental conditions, coping with large periods of drought, high saline and ranges of temperatures, low levels of oxygen and polluted waters.

Sources 1

Spanish Catalogue of Exotic Invasive Species and Document sheets of the Exotic Invasive Species Act 630/2013.

Spanish Catalogue of Exotic Invasive Species - Crustaceans 1

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

Fuentes y Créditos

  1. Adaptado por INVASORES - administrador de un trabajo de (c) cartotragsatec, algunos derechos reservados (CC BY-SA), http://natusfera.gbif.es/guide_taxa/2000

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