Lec23-InsectPests_1

Lec23-InsectPests_1 - Insects As Pests What is a Pest? An...

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Insects As Pests What is a Pest? An insect whose normal activities interfere or conflict with ours. Biologically speaking, there is nothing that clearly defines an insect as a pest - other than the conflict with our interests. Humans define which insects are pests . Insects as Pests Conflict with human interests: 1. Growing plants (agricultural, ornamental) 2. Stored products, household goods, structural materials 3. Human or animal health
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When Does an Insect Become a Pest? Termites : play an important role in the breakdown and recycling of wood, however when they invade wooden structures they become a serious pest. mud tubes on walls leading into a house are a sign of termite infestation Losses to Ants and Termites That Feed or Live in Wood. .. “If you live in the United States, you live under the constant threat of costly termite or carpenter ant infestation. The annual price tag associated with their destruction is conservatively estimated at $1.5 billion!!” Paul Fisette, Univ. of Mass. Agriculture - Losses Caused by Insects On a worldwide bases losses may equal 20-25% of total production Storage losses after harvest may be 20 - 50% In the U.S. agricultural losses may be 10 - 15%; at an annual cost of 20 -25 billion dollars. Grain storage in Mali, West Africa
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Agricultural Pests Direct damage - feed or oviposit on fruiting structures or parts of the plant that are harvested Indirect damage
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This note was uploaded on 06/27/2008 for the course ENT 3014 taught by Professor Rdfell during the Fall '06 term at Virginia Tech.

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Lec23-InsectPests_1 - Insects As Pests What is a Pest? An...

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