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AP Bio. Ecology Podcast 4. Community Ecology – Coevolution and Coloration. Community Ecology. Community all the different organisms (species) that live together in a place. Study to answer: In what way do the populations interact?. Interspecific Interactions.

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ap bio ecology podcast 4

AP Bio. Ecology Podcast 4

Community Ecology – Coevolution and Coloration

community ecology
Community Ecology
  • Community
    • all the different organisms (species) that live together in a place

Study to answer:

In what way do the populations interact?

Interspecific Interactions

many ways in which different populations interact
Many ways in which different populations interact:
  • Competition
  • Predation
  • Symbiotic Relationships

COEVOLUTION – An overarching concept

  • Evolution of one species in response to new adaptations that appear in another species
    • Examples
      • Prey defenses cause predators to adapt to them or die, etc.
      • All forms of symbiosis are examples of coevolution
camouflage defense
Camouflage Defense
  • Cryptic Coloration and Coevolution






mimicry and coevolution
Mimicry and Coevolution
  • Warning coloration
    • Aposematic coloration
  • Two Types of Mimicry
    • Batesian
    • Mullerian
batesian mimicry
Batesian Mimicry

palatable or harmless species mimics a harmful model

green parrot snake

Hawkmoth larva puffs up to look like poisonous snake

hawkmoth larvae

mullerian mimicry

Mullerian mimicry

Mullerian mimicry

two or more protected species look like each other

cuckoo bee

yellow jacket

- group defense?

- predators may evolve innate avoidance

what kind of mimicry
What kind of mimicry?

Coral snake is poisonous

King snake is not

Red on yellow, kill a fellow;

red on black, you’re okay Jack

batesian mimicry1

Monarch male


Viceroy male


Which is the moth vs. the bee?

Which is the fly vs. the bee?





common warning coloration
Common warning coloration
  • Aposematic species come to resemble each other

black, red, orange & yellowmeans:DON’T EAT ME!

coevolution in community
Coevolution in Community
  • Predator-prey relationships
  • Parasite-host relationships
  • Flowers & pollinators

Long term evolutionary adjustments between species