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Natural defence - lady bug/ lady beetle Natural defence - lady bug/ lady beetle

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Biological Pest Control

Biological Pest Control

Biological pest control involves the use of natural predators in order to control pests, rather than relying on chemical compounds such as insecticides. Often times the numbers of natural predators are simply increased, though sometimes a new predatory species is introduced into the area, usually with government supervision.

Some very popular predators include ladybugs, which are voracious predators of aphids, flies, and wasps. Lacewing flies are especially popular because they require large amounts of food during their lifetimes. Introduction of new species is always done carefully, because sometimes new species turn out to be a poor predator and instead become invasive.

A good example of this is the Cane Toad, which when introduced to Australia, proved toxic to its natural predators and also couldn't jump high enough to eat the cane flies it had been brought in to control.

Submitted by SuperGreenMe on Sep 21, 2008