Title Page
ABSTRACT
Contents
1. INTRODUCTION 10
2. MATERIALS AND METHODS 15
2.1. Barnacle Shell Sampling 15
2.2. Isoscape Development 15
2.3. Isotope Values Analysis Using SIMS 17
2.4. Coordinates Assignments 18
3. RESULTS 21
3.1. Field Sampling 21
3.2. Isotope Analysis 21
3.3. Presumed Pathways 29
4. Discussion 39
5. CONCLUSION 44
7. REFERENCES 46
Table 1. Information about host sea turtles and commensal barnacles. 16
Figure 1. Secondary ion mass spectrometry used for the study 13
Figure 2. Brief schematic of SIMS 14
Figure 3. Steps of pathway assignments 19
Figure 4. Loggerhead CC1 and two barnacles 22
Figure 5. Loggerhead CC2 the barnacle from CC2 23
Figure 6. Green turtle CM and the barnacle from CM 24
Figure 7. Hawksbill turtle EI and the barnacle from EI 25
Figure 8. Cross section of barnacles from CC1 27
Figure 9. Cross sections of barnacle from CC2, CM, and EI 28
Figure 10. Isotope analysis of two barnacles from CC1 31
Figure 11. Isotope analysis of the barnacle from CC2 32
Figure 12. Isotope analysis of the barnacle from CM 33
Figure 13. Isotope analysis of the barnacle from EI 34
Figure 14. Presumed pathways using two barnacles from CC1 35
Figure 15. A presumed pathway using a barnacle from CC2 36
Figure 16. A presumed pathway using a barnacle from CM 37
Figure 17. A presumed pathway using a barnacle from EI 38