Killer shrimp, creatures that indiscriminately slay other animals without eating them, may soon join the list of invasive species living in the Great Lakes, a new study finds.
From cane toads to kudzu, invasive species (sometimes called alien species) are those that aren't native to an ecosystem and that cause harm to native species, local economies or humans. Invasive species can be terrestrial species, like the pythons invading Florida's Everglades, marine, like the lionfish invading Caribbean waters, or pathogens. Invasive species can cause harm by out-competing native species, or preying on them. They can sometimes increase fire risks or contribute to erosion. Some invasive species have been introduced accidentally and others, like kudzu, were introduced on purpose and then spread more widely than originally intended. Invasive species are found in every type of habitat and are typically difficult to eradicate. Read more about invasive species around the globe and efforts to stop their spread.
Once down to only 15 animals, giant tortoises on Espãnola, a tiny Galápagos island, now number about 1,000, making the reptile one of conservation's greatest success stories.
An amazing video from the Florida Keys shows a curious domestic cat nearly become a midnight snack for an American alligator.
An invasive species of camel cricket from Asia is now far more common in American basements than the native variety, a citizen science project found.
When other predatory fish quit stalking their prey to look for easier targets, lionfish just keep on killing.
A genetic modification that creates male-only populations could give us a new weapon against invasive fish such as carp that plague our waterways.
A type of freshwater algae, known as "rock snot," that infiltrates river bottoms and clumps on rocks is not an invasive species introduced into waterways by humans, a new study finds.
Didymo, also known as "rock snot," is a type of freshwater algae that clumps on rocks and invades river bottoms.
Alien species become invasive when their introduction to an ecosystem ends up causing ecological disruption in their new home.
Introduced species pose one of the greatest threats to Australia’s fauna and flora, but expensive efforts to control them aren’t working.
Most snakes have poor navigational capabilities, but the Burmese python can navigate home after being transported more than 20 miles away, using an internal map and compass.
Invasive, plankton-slurping Asian carp are creeping up the Mississippi River. Ready-to-hatch eggs of the fish were discovered as far north as Lynxville, Wisc.
Crazy Ants, named for their erratic movements, are taking over fire ant populations in the U.S. South.