Avery E. Scherer OYSTER ADAPTATIONS TO PREDATORS
PREDATION With starfish Without starfish
PREY ADAPTATIONS
OYSTER REEFS Photo credit: Elizabeth Robinson
Robinson et al WHAT WE KNOW P<0.01 cba
DOES IT WORK? abb
HOW ARE THE PREDATORS DIFFERENT? TransientResident
Question: Does blue crab movement change oyster adaptations? Hypothesis: Yes, the longer the predator is around, the stronger the oyster shell will be. QUESTIONS AND HYPOTHESES
EXPERIMENT
QUESTION 4: DO PREDATOR MOVEMENTS CHANGE OYSTER DEFENSES? Treatment:No predator Blue crab (2 hours) Blue crab (1 day) Blue crab (all the time) Tanks:8888
RESULTS a aa b
Oysters can use adaptations against predators… …but only when predators are really scary CONCLUSION
Title slide: PHOTO CREDITS