Fungus-Spreading Beetle and Other Invasive Species

Some of them are out of control, others more manageable.

ByCalvin Lawrence Jr.
July 25, 2014, 4:20 PM
PHOTO: A redbay ambrosia beetle (Xyleborus glabratus) is seen in this photo.
A redbay ambrosia beetle (Xyleborus glabratus) is seen in this photo.
Jiri Hulcr/Flickr

— -- intro: The tiny redbay ambrosia beetle is causing giant problems for the Everglades, spreading a fungus that has killed trees across Florida's wetlands.

The beetle is from southeast Asia and likely arrived in a shipment of wood packing material, according to The Associated Press

Whatever the preferred method of transport, there are other equally prolific and economy-damaging species that put U.S. native habitats at risk, including a predatory fish that breathes air and "walks" on land, the Africanized honey bees that have been known to attack people and large animals, and the Asian carp that have been under increased federal monitoring in Chicago.

Here are six others of note:

quicklist: 1category: 7 Invasive Speciestitle: The Northern Snakehead Fish url: text: First spotted in the Chesapeake Bay in Maryland a decade ago, the Asian northern snakehead fish breathes air and "walks" on land. Native to Africa and Asia, and known to supplement its primary diet of other fish with the occasional small mammal, this species is so fearsome that Maryland requires anglers who catch them to kill them immediately. Competitive snakehead fishing has the same goal. Virginia fisherman must not only kill them but report the catch to authorities, to help officials track their every move. They're OK for grilling, though.

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quicklist: 2category: 7 Invasive Speciestitle: Kudzu url: text: The so-called Vine That Ate the South will smother anything in its path unless kept in check, killing or damaging other plants. The legendary plant has menaced the southeastern United States for decades. It's native to China and Japan.

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quicklist: 3category: 7 Invasive Speciestitle: Asian Carpurl: text: Some of these veracious eaters are so big and agile that they they've been known to injure people when boats startle the fish and send them jumping up to 10 feet in the air. Their predatory ways are of particular concern in the Great Lakes region.

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quicklist: 4category: 7 Invasive Speciestitle: Tallow Treeurl: text: Ben Franklin has gotten a reprieve, thanks to researchers at Rice University in Houston. Turns out the multi-talented founding father didn't import the particular tallow trees now classified as an evasive species, running wild through thousands of acres along the U.S. coastal prairie from Florida to East Texas.

"The genetic evidence ... clearly points to it being descended from eastern China, probably in the area around Shanghai," Rice biologist Evan Siemann said of the species that has thrived at the expense of other foliage.

DNA evidence has exonerated Franklin, who apparently imported a less unwieldy batch of the trees from London in the late 17th century. But the invasive variety grows and spreads faster than its Chinese relatives, despite investing "far less energy in producing chemicals that ward off insects," according to the Rice University researchers.

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quicklist: 5category: 7 Invasive Speciestitle: Africanized Honey Beesurl: text: The so-called killer bees are more aggressive than other kinds and any one who hears a loud buzzing sound coming from a hive should get away ASAP, Ken Pellman, a spokesman for the Department of Agriculture and Weights and Measures, told the of Santa Clarita Valley, Calif.

"And don't try to jump into water," he said. "That only works in cartoons." Some of the bees escaped Brazil in the 1950s when a scientist was cross-breeding them with more docile European bees, he told the Signal.

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quicklist: 6category: 7 Invasive Speciestitle: Zebra Musselsurl: text: Native to Asia's Caspian Sea area, Zebra mussels are so abundant in the Great Lakes region that the pipe-clogging pests disrupt municipal water and power plants. Wisconsin Electric Power Co., for instance, spends $1 million year controlling them at Lake Michigan plants, according the state's department of natural resources. They also attach themselves to hard surfaces such as boat hulls and motors, leaving behind hefty bills to repair damages.

And biologists believe they are the source of the botulism that has resulted in the deaths of thousands of Lake Michigan birds since the late 1990s.

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