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Natural Predators as Biological Controls

Scientific and Technical concepts

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There are Three Approaches to Biological Control :
 
Classical Biological Control:
~ this means introducing a new organism that wasn't originally part of the habitat
~ The new organism is a natural enemie to the unwanted pests
~The problem with this is that the organism introduced may not have any predators in the new home, therefor it may keep increasing its population rapidly
 
Augmentation:
~ increasing the population of a natural enemy which is a natural enemie to the pest
~ this is done by producing the organism in a lab and releasing it
 
Conservation:
~ This means creating ideal conditions for a pests natural enemy so they can continue to eliminate the pest
 

The main forms of natural predators is as followed:

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This wasp is laying its egg inside an aphid where its young will develop. Parasitoid immatures develop on or inside a host, killing it as they mature. They emerge as adults and continue the cycle.

DEFINITION ~ Any of various insects, such as the ichneumon fly, whose larvae are parasites that eventually kill their hosts.

 

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Lady beetles are well-known examples of predatory insects. A predator consumes many prey during its lifetime. The predators listed in this guide feed on insects and mites.

DEFINITION ~An organism that lives by preying on other organisms

 

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This nematode is just one example of a pathogen which may kill its host. Other pathogens include bacteria, viruses, fungi and protozoa. This section also includes antagonists which control plant diseases.

DEFINITION ~An agent that causes disease, especially a living microorganism such as a bacterium or fungus.

 

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Weeds can be attacked by arthropods, vertebrates, and pathogens (fungi, viruses, bacteria, and nematodes). This weevil feeds only on one particular type of weed called purple loosestrife.

DEFINITION ~any organism who eats weeds

Natural Predators as Biological Controls