Addressıng of Invasıve Alıen Specıes Threats ın Terrestrıal Areas and Inland Waters ın Turkey


(Myocastor coypus)


Family name : Myocastoridae

Species name: Myocastor coypus (Molina, 1782)

Synonym name: Mus coypus Molina, 1782

Common name: Nutria, Coypu

English name: Nutria, Coypu

Group: Rodentia

Year of introduction: 1900

Year of first report: 1973

National distribution area:

It has distribution in Edirne and neighbouring parts in the west and Kars and Iğdır in the east in Turkey.

Distribution details:

It is distributed on Meriç, Arda and Tunca River System in the west, on Kura River System Aras in the East

Type of introduction:

It is introduced to our country via rivers and streams.

Pathway of introduction:

It has spread all over the world from the original distribution area with fur farms.

Donor area:

South America (Argentina, Bolivia, South Brazil, Chile, Paraguay, Uruguay)


They usually live in shallow and reed areas of streams, rivers and lakes. It is also found in rivers, streams, lakes, ponds and bitter swamps in coastal areas.


Alien invasive


Not very common




Myocastor coypus usually digs tunnels on inclines of 45-90º. The biggest damage caused by Myocastor coypus is the feeding of the wetlands with natural vegetation that holds the soil intact. This causes soil erosion. Apart from populations with high density, the damage caused by Myocastor coypus is minimal. However, they are known to damage drainage systems, grains and natural plants. Tunnels sometimes penetrate or weaken the riverbeds that provide irrigation of the fields. Toxoplasmosis, Papillomatotis, Rabies, Eguine encephalomyeletis, Salmonellosis, Paratyphoid, Leptospirosis, Richattsia, Sarcopondiosis, Coccidiosis can be transmitted to Myocastor coypus.


Myocastor coypus can be considered as a fur animal. As the cholesterol level of meat is very low, it is used as a source of protein in some places. It also constitutes the food of predators


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