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Insects

Insects. Insect bad guys!. You’ll never look at a bug the same. What is an insect?. 3 body parts. head. thorax. abdomen. What is an insect?. compound eyes. What is an insect?. two antenna. What is an insect?. exoskeleton. What is an insect?. 6 legs. Anatomy. 3 Body parts.

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Insects

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  1. Insects

  2. Insect bad guys! You’ll never look at a bug the same.

  3. What is an insect? 3 body parts head thorax abdomen

  4. What is an insect? compound eyes

  5. What is an insect? two antenna

  6. What is an insect? exoskeleton

  7. What is an insect? 6 legs

  8. Anatomy 3 Body parts 3 pairs=6 legs

  9. Complete Egg Larva (worms/catepillars) Pupa (relatively dormnant) Adult (flies, beetles, etc.) Incomplete Egg Nymph early-no wings Late-wings developing Adult Life Cycle-Insect Metamorphosis

  10. *Insects must be killed when they are actively feeding or moving on the plant.

  11. Complete Metamorphosis Video

  12. http://www.youtube.com/watch?v=nuPCu8lHC8I

  13. Damage • Damage depends on the type of mouthpart • Chewing-tear, chew or grind food • Sucking: • Piercing: punctures plant and suck sap • Rasping: rasps or break surface and suck sap. • Siphoning: have a coiled tube they dip into liquid food such as nectar and draw it in (ex. Butterfly) • Sponging: have two sponge-like structures that collect liquid food and move it into the food canal. (ex. House fly)

  14. Chewing- Beetles • Eat leaves • Stems • Flowers • Fruits • Nuts

  15. Beetles

  16. Chewing- Cutworms • Usually attacks stems • May eat other plants

  17. Cutworms: The larvae or caterpillars of some moths are called cutworms (Agrotis, Amathes, Peridroma, Prodenia spp.) because of the manner in which they cut down young plants as they feed.

  18. Chewing- Caterpillars • Larva • Moths • Butterflies • Fuzzy and hair • Eat young leaves and stems • Roll up in leaves, makes leaves curl

  19. Caterpillars

  20. Chewing- Grasshoppers • Eat all parts of plants

  21. Grasshopper

  22. Sucking • Puncturing the surface to take out the sap of a plant or other animal.

  23. Sucking- Aphids • Pierce and suck juices • Plant lice • Cause stunted growth, yellow spotted leaves • Sticky substance and black mold • Attracts ants

  24. Aphids

  25. Sucking- Leaf Bugs • Causes plants to look unhealthy • Lose normal color and wilt

  26. Sucking- Mealy Bugs • Pierce and suck from underside of leaves • Suck in leaf axils • Causes yellow appearance • Sticky secretions

  27. Mealy bug

  28. Sucking- Thrips • Chews and then sucks • Causes plant tissue to become speckled or whitened • Leaf tip withers • Leaf curls and dies

  29. Thrips

  30. Sucking- Whiteflies • Feeds on underside of young leaves • Little flying white specks when plants are shaken

  31. White flies

  32. Sucking- Mites (Watch Out it isn’t an insect) • Attack underside of leaf • Causes leaves to turn gray to grayish • Severe infestations cause webbing • Insects can be red

  33. Mites

  34. cankerworms

  35. Group classwork • Choose an insect from the list for your group. (Beatles, cutworms, grasshoppers, caterpillars, aphids, leaf bugs, Mealy bugs, thrips, whiteflies,mites or cankerworms • As a group research your insect. Determine: • Mouthpart • Host(where does it live?) • Is it damaging or beneficial? How? • How would you get rid of it (damaging) or encourage it (beneficial)? • Draw, color and label your insect on poster board. List neatly the information you found.

  36. Pest Management • Integrated pest management (IPM) focuses on pest prevention by identifying, preventing and monitoring pests with the least amount of danger to the environment. • Identify the pest • Prevention by using methods such as crop rotation, pest resistant varieties and planting pest-free rootstock. • Monitoring new infestations can be the best controlled by early detections. • Traps may be used to check pest population. • If these methods are not affective, spraying of pesticides may be necessary.

  37. Biological controls • Lady beetles or lady bugs both adults and larva feed on soft bodied insects such as aphids, mites and eggs. • Parasitic wasp attack caterpillar, butterfly or moth egg or pupa, beetle egg and other insects in the egg, larva or pupa stage. • Praying mantis will eat just about any pest. • Green lacewig larvae are predators that feed mainly on soft bodied insects. • Predatory mites will attack spider mites at any stage of development inside a greenhouse or outside.

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