Lec40_Biocontrol_05D

Lec40_Biocontrol_05D - Biological Control is the use of...

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Biological Control is the use of living organisms, or their products, to control pests. V Biocontrol Tools Predators Parasitoids Parasitic as immature, free-living as adult; always kill host; usually only parasitize immature stage of host; usually only a few present in host Parasites Parasitic in all stages; usually do not kill host; parasitize immatures and adults of host; often many present in or on host Pathogenic fungi, bacteria, viruses. Example: Bacillus thuringiensis (spores) - bacteria Natural products of organisms Example: Abamectin, produced by fungus Streptomyces avermitilis, used against Carribean fruit flies in place of malathion sprays V Natural enemies act. .. Directly by killing host Indirectly sterilization of host reducing reproductive potential of host reducing competitive ability of host H
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Primary Orders of Predators Coleoptera: beetles Neuroptera: lacewings Hymenoptera: wasps, ants, bees Diptera: flies Hemiptera: bugs
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Lec40_Biocontrol_05D - Biological Control is the use of...

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