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20.1: Species Interactions

20.1: Species Interactions. Species (organism) Population Community (interaction of different species) Ecosystem Biosphere. PREDATION (+/-). one species eats another species. PREDATION (+/-). one species eats another species predator : eater and prey : eaten

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20.1: Species Interactions

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  1. 20.1: Species Interactions

  2. Species (organism) Population Community (interaction of different species) Ecosystem Biosphere

  3. PREDATION (+/-) • one species eats another species

  4. PREDATION (+/-) • one species eats another species • predator: eater and prey: eaten • Types: carnivores, herbivores and omnivores

  5. PREY: SEA URCHINS • cyclic in nature – ↑ in prey leads to ↑ in predators (vice versa) PREDATOR: SEA STARS

  6. PREY: SEA URCHINS • cyclic in nature – ↑ in prey leads to ↑ in predators (vice versa) • Adaptations in prey for defense against predators PREDATOR: SEA STARS

  7. RESPONSES TO PREDATION • 1. camouflage: Cryptic coloration disguises an animal so it’s less visible to predators or prey • http://www.pbslearningmedia.org/asset/tdc02_vid_disguise/

  8. 2. warning coloration (aposematism): intended not to camouflage an organism but to make itmore noticeable - Bright coloring to warn potential aggressors of toxicity

  9. 3. Mimicry: physical (or behavioral resemblance) of one species to another

  10. 4. Action by Prey: action by prey just before death that is unexpected by predator

  11. 5. alluring coloration: animals are colored so a predator's attention is drawn to a non-vital part of the prey's body

  12. 6. Deceptive Markings: markings that resemble fake eyes or false heads to startle predator.

  13. What type of Response is this?

  14. What type of Response is this?

  15. What type of Response is this?

  16. What type of Response is this?

  17. What type of Response is this?

  18. Class work: • Create-a-Prey

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