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Welcome to the World of Insects

Welcome to the World of Insects. Importance of Insects to Agriculture. PESTS. – eat our foods - damage our crops. 4. spread plant, human, and animal diseases. 5. Importance of Insects to Agriculture. PESTS. infest our homes infest our animals and our bodies. 6.

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Welcome to the World of Insects

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  1. Welcome to the World of Insects

  2. Importance of Insects to Agriculture PESTS – eat our foods - damage our crops 4 • spread plant, human, and animal diseases 5

  3. Importance of Insects to Agriculture PESTS • infest our homes • infest our animals and our bodies 6 • sting us (venomous) 8 7

  4. Importance of Insects to Agriculture PESTS - annoy us - cause unsightly damage 9 10

  5. Importance of insects to Agriculture BENEFITS 11 – pollinate our plants - degrade and recycle nutrients

  6. Importance of Insects to Agriculture BENEFITS - feed on pest species 12 - food for other animals

  7. Importance of insects to Agriculture BENEFITS • used in research and medicine • provide natural products (e.g., honey, beeswax, • silk, dye, and • shellac) 13 14

  8. MOST OF US RECOGNIZE BEETLES AS MAJOR PESTS!! DID YOU KNOW THATSOME PEOPLE “TREASURE”THEM AS COLLECTIBLES??

  9. How many insects are there in the world? - about one million insect species have been described - scientists estimate that there may be as many as 10 million different types of insects!! - there are about 200 million insects for every human on earth!!

  10. How many insects are there in the world? • insects comprise about • 10% of the earth’s weight • insects represent about • 80 to 85% of all life on earth

  11. PEST FACT The insect population of the world is at least 1,000,000,000,000,000,000 . Averaging the weight of each insect as 2.5 mg, the weight of the earth's insect population exceeds that of a factor of 12. human inhabitants by

  12. Fortunately, most of these insects cause us no harm - only about 10% of all insects cause us the greatest amount of pain, anguish, and economic loss - because each one of you will come into contact with many types of organisms, it is important to properly identify them to effectively manage them

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  19. What makes an organism an INSECT?? [generally speaking] - three body parts [head, thorax, and abdomen] - six legs - one pair of antennae - one pair of compound eyes - an exoskeleton - most adult insects have wings

  20. INSECTS are experts at two biological functions: 1) eating 2) reproducing [unfortunately, they do both of them extremely well!]

  21. How can we separate or classify INSECTS?? 1) by the use of a written key [generally uses body parts] 2) by the type of damage that they cause [e.g., borer, gall former, leaf feeder] 3) by the type of mouthparts that they have or their manner of feeding [e.g., chewing or piercing-sucking]

  22. These types of classifications help us to quickly place a “general label” on the “problem” insect!!

  23. Types of Mouthparts [piercing-sucking] 24

  24. Types of Mouthparts [chewing]

  25. Types of wings and venation of wings 28

  26. Types of development

  27. “WHITE ANTS”

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  31. CAN YOU MATCH THESE PHYSICAL WONDERS? • Run 50 body lengths in 1 second • (cockroach) • = a six-foot person running • ca. 206 miles per hour

  32. CAN YOU MATCH THESE PHYSICAL WONDERS? • Run 50 body lengths in 1 second • (cockroach) 2) Flap your arms (“wings”) 300 times in 1 second (flying mosquito) • = about one million times • per hour

  33. CAN YOU MATCH THESE PHYSICAL WONDERS? • Run 50 body lengths in 1 second • (cockroach) 2) Flap your arms (“wings”) 300 times in 1 second (flying mosquito) 3) Jump 130 times your height (flea) • = a six-foot person jumping • 780 feet

  34. CAN YOU MATCH THESE PHYSICAL WONDERS? • Run 50 body lengths in 1 second • (cockroach) 2) Flap your arms (“wings”) 300 times in 1 second (flying mosquito) 3) Jump 130 times your height (flea) 4) Lift 10-50 times your weight (ant) • = a 200 lb person lifting • one to five tons!

  35. CAN YOU MATCH THESE PHYSICAL WONDERS? • Run 50 body lengths in 1 second • (cockroach) 2) Flap your arms (“wings”) 300 times in 1 second (flying mosquito) 3) Jump 130 times your height (flea) 4) Lift 10-50 times your weight (ant) 5) Hear with your legs (cricket)

  36. INSECTS THEY ARE EVERYWHERE!! • in the air 2) in the water 3) in the soil 4) in our homes 5) on our plants 6) on our animals 7) on our bodies!!

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