Invasive species and competition

Nonnative invasive species and native species outside of their natural range contribute to the decline and elimination of native species by carrying disease, altering and degrading habitat, and competing with or preying on native species.

The viability of remaining Higgins eye mussel populations in Minnesota is jeopardized by the infestation of nonnative zebra mussels (Dreissena polymorpha) in the Mississippi River and its tributaries. Zebra mussels can attach themselves in large numbers to the shells of native mussels, eventually causing death by suffocation.

Higgins Eye (Lampsilis higginsi)

Invasive species and competition

Ten reasons why species become rare

Habitat loss and degradation Invasive species and competition Pollution Habitat specificity Persecution and exploitation

Peripheral populations Vunerable characteristics Relict populations Disease Global climate change

back to rare species guide