What Are Exotic Invasive Insects?

21 Янв 2015 | Author: | No comments yet »
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What Are Exotic, Invasive

Gypsy moth — an release

Photo: University of Appleby

Some organisms, insects, are referred to as exotic, species, or sometimes as alien Put simply, these organisms introduced, intentionally or accidentally, an ecosystem outside their own and to thrive. Exotic, invasive can tip the balance in an ecosystem, sometimes serious environmental and economic

How Exotic, Invasive Insect Are Introduced:

Accidental escapes Sometimes an entomologist or naturalist his mark on history by letting one of his specimens escape. Etienne Trouvelot, a Frenchman living in in the 1800’s, unleashed a Lepidopteran in his own backyard. An amateur naturalist with silkworms, he brought gypsy moth egg masses from his native country. larvae escaped, and by the 1880’s the were defoliating his neighborhood. over a century later, feed on forests throughout the U.S. and cost millions of just to contain.

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Imported goods — exotic insect invaders their way to foreign regions by away in imported goods or transported items. In the 1800’s, farmers imported citrus from Australia. Along the trees came another from down under the cottony cushion scale. The insects enjoyed decades of as they infested orchards no natural enemies in the U.S. infamous aliens, like the Asian longhorned beetle. hid in shipping pallets to make the journey to America.

Intentional releases — made a smart move in the of the cottony cushion scale, for another Australian insect would prey naturally on the In 1889, Vedalia beetles Australia were released in the and the citrus crops were free of scale. The Vedalia continues to be a front-line weapon for farmers, with no devastating on the ecosystem. Biological controls alien insect species to new but when done correctly do not invasive pests.

Other intentional introductions less success, and may be disastrous. The multicolored lady beetle was introduced as a biological control in in 1916; subsequent releases in other U.S. regions for after. The beetle is a voracious of soft-bodied insects like and went to work immediately. the alien lady beetle our native lady beetle making their survival challenging. In addition, the Asian beetles have a nasty of aggregating in homes and buildings winter months, something our species does not do.

Invasive Pests in the News

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