Coevolution The mutual evolutionary influence between two species

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Presentation transcript:

Coevolution The mutual evolutionary influence between two species Species evolve in response to changes in each other Symbiotic relationship including: Predator/prey Parasite/host Plant/pollinator Each party exerts selective pressures on the other Coevolution

Co-evolution

Coevolution http://www.zo.utexas.edu/faculty/sjasper/images/30.18.jpg

Coevolution fly and orchid http://www.zo.utexas.edu/faculty/sjasper/images/30.18.jpg

Coevolution Bumblebees and the flowers they pollinate have co- evolved so that both have become dependent on each other for survival.

Coevolution Yucca moth and the yucca plant. Female moth pushing pollen into the stigma tube of the yucca flower while visiting the flower to deposit her eggs. Coevolution Yucca moth larvae (left) feeding on seeds in the yucca fruit.

Coevolution Clown Fish and Sea anemone http://www.zo.utexas.edu/faculty/sjasper/images/30.18.jpg

Coevolution Praying Mantis camouflaged against leaf Hides from predators Eats plant pests, so helps the plant Coevolution http://www.zo.utexas.edu/faculty/sjasper/images/30.18.jpg

Shrimp cleaning Titan triggerfish, Pacific Ocean Coevolution Shrimp cleaning Titan triggerfish, Pacific Ocean http://www.zo.utexas.edu/faculty/sjasper/images/30.18.jpg

http://www.pbs.org/wgbh/evolution/library/01/3/quic ktime/l_013_07_56.html Wolfe: Coevolution of horses and plants Videos