1. Avery E. Scherer OYSTER ADAPTATIONS TO PREDATORS

2. PREDATION With starfish Without starfish

3. PREY ADAPTATIONS www.northrup.org http://mauicharters.com/wordpress/?p=289

4. OYSTER REEFS Photo credit: Elizabeth Robinson www.oysters.unh.edu www.tribenwater.com www.sms.si.edu

5. Robinson et al. 2014 WHAT WE KNOW P<0.01 cba

6. DOES IT WORK? abb

7. HOW ARE THE PREDATORS DIFFERENT? www.tribenwater.com www.sms.si.edu TransientResident

8. 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

9. EXPERIMENT

10. 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

11. RESULTS a aa b

12. Oysters can use adaptations against predators… …but only when predators are really scary CONCLUSION

13. Title slide: www.laboratoryequipment.comwww.laboratoryequipment.com PHOTO CREDITS