The datasets supporting this article are available in the appendix/ supplementary material.
COMPETING INTERESTS STATEMENT
The authors declare no competing interests.
AUTHORS’ CONTRIBUTIONS
CF designed the study, carried out the field work, collected primary data and mined data, carried out the statistical analyses, and co-drafted the manuscript; JB participated in the design of the study, participated in data analysis and co-drafted the manuscript; PTP participated in the design of the study and critically revised the manuscript;
All authors gave final approval for publication and agree to be held accountable for the work performed therein.
ACKNOWLEDGMENTS
For help collecting the morphometric data on olive ridley turtles in Costa Rica, we thank our research assistants. The morphometric measurements were performed under research permits #ACG-PI-034-2015, #ACT-OR-DR-050-15, #ACT-OR-DR-074-16, and #ACT-OR-DR-109-16 issued by the Costa Rican government (SINAC/MINAE) and sample collection was performed in accordance with the approved guidelines of the Animal Care and Use Committee of Texas A&M University, USA (#IACUC 2015-0157). This work was in part supported by a Texas Sea Grant Grants-in-Aid of Graduate Research Award, and a George Bush Library Foundation Travel Grant.