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National Invasive Species Information Center (NISIC)

The gateway to invasive species information; covering federal, state, local and international sources.

Invasive species are plants, animals, or pathogens that are non-native (or alien) to the ecosystem under consideration, and whose introduction causes or is likely to cause harm. Learn what determines if a species is invasive.

Slideshow of Featured Species

  • Flathead Catfish

    Preys on native species (Fofonoff et al. 2003)

  • White Spotted Jellyfish

    Preys on native species; negatively impacts shrimp industry by clogging nets and damaging fishing equipment (Ocaña-Luna et al. 2010)

  • Asian Citrus Psyllid

    Damages citrus plants by feeding on sap; serves as a vector for citrus greening disease, which causes a decline in citrus production. (Grafton-Cardwell et al. 2006)

  • Old World Bollworm

    Feeds on a large range of plant hosts and could cause serious economic losses to corn and cotton in the U.S. (Tay et al. 2013)

Featured

News

Read the latest invasive species research news from ScienceDaily

What's New

See what's new on NISIC's Web site

Identify

Identify species that may be invasive

Calendar and Events

Find invasive species related conferences and events