1. Question of the day… Finish Berlese Quiz Friday, April 18th 2008

2. Questions 1. What kind of scientists was Berlese? 2. What did he study? 3. According to our results, which soil sample contained the greatest diversity of organisms? 4. The cover of soil and leaf litter provides conditions that are _______ & _______ which the organisms we observed prefer. 5. Describe one way your team might improve this experiment to get better results

3. Insects Little mouth, eats a lot

4. What is an Insect? Segmented body Segmented body Exoskeleton Exoskeleton Jointed appendages Jointed appendages Body divided into 3 parts Body divided into 3 parts Head Head Thorax Thorax Abdomen Abdomen Three pairs of legs attached to thorax Three pairs of legs attached to thorax

5. Introduction to Insect Body Parts

6. Dirty Mouth? Insects have three pairs of appendages used for mouthparts… Insects have three pairs of appendages used for mouthparts… Mandibles- used to saw and grind food Mandibles- used to saw and grind food Proboscis- used to suck nectar Proboscis- used to suck nectar

7. Sucking or Chewing? Tiger Swallowtail Butterfly Mosquito Horsefly Carpenter Bee

8. Proboscis or Mandibles? MOUTHPARTS OF SELECTED INSECT ORDERS Odonata (dragonflies): chewing Isoptera (termites):chewing Hemiptera (true bugs): sucking Homoptera (cicadas, aphids, etc): sucking Neuroptera (antlions, lacewings): chewing Coleoptera (beetles): chewing Lepidoptera (butterflies & moths):sucking Diptera (flies): sucking Hymenoptera (wasps, bees): chewing/sucking

9. Your turn… A. Proboscis or mandibles? B. Sucking or chewing? 1. Great spangled fritillary 2. Asian tiger mosquito 3. Giant Cockroach (eating bread crumbs)

10. Question of the day… What would happen if there were no more insects? 1. They are an important energy source for many animals especially birds. 2. A lot of insects are "garbage collectors" Their job is to break down dead plants and animals in the recycling process. 3. Some insects like parasitic wasps control populations of others organisms. 4. Without them we would have no fruits as they pollinate flowers. 5. They are important also because of problems they cause especially the spread of diseases like malaria.