Predator/Prey Interactions

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Predator/Prey Interactions

  1. 1. Predator/Prey Interactions<br />By<br />Carla Bridges<br />
  2. 2. Indiana Standard<br />6.4.9 <br />Recognize and explain that two types of organisms may interact in a competitive or cooperative relationship, such as producer/consumer, predator/prey, or parasite/host. <br />
  3. 3. Natural Process<br />This is a natural process that occurs in nature to balance species.<br />Co-evolution- occurs when you have 2 or more species evolving with each other<br />Prey can evolve in ways to help them avoid the predators.<br />Any improvement one makes, the other must adapt.<br />
  4. 4. How Prey Avoid Predators<br />Avoidance<br />Crypsis-blend into surroundings<br />Defenses- poisons/taste bad/defense mechanism such as shells, sharp teeth/claws<br />Mimicry- look like a species they would avoid (poisonous snakes)<br />Senses<br />Speed<br />Stamina<br />Living in groups<br />Size ( small or large)<br />
  5. 5. How Predators Exploit Prey<br />Crypsis<br />Patience- willing to stay in one spot and wait<br />Tolerance for toxic defenses<br />Speed<br />Senses<br />Large size<br />Stamnia<br />Group hunting<br />
  6. 6. Two Types of Hunting<br />Ambush- find one spot and wait (rattlesnakes)<br />Active hunting- constantly move to encounter as many as possible<br />Success rate is low <br />Group hunting increases success rate<br />Dogs vs. cats?<br />
  7. 7. Most Successful Hunters<br />Wild African Dog<br />Ability to pick prey while hunting<br />Large Cats<br />Pick prey before they begin to hunt, if that is not successful they quit the hunt<br />
  8. 8. Do Predators Control Prey Population?<br />31 Studies Say Yes<br />27 Studies Say No<br />
  9. 9. Predator/Prey Simulation<br />What do you think?<br />
  10. 10. Resources<br />http://dictionary.reference.com/<br />http://dc.doe.in.gov/Standards/AcademicStandards/StandardSearch.aspx<br />Dr. James BandoliUSI Evansville, IN<br />

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