About the Authors

Jennifer S Ford, Ransom A Myers
Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada

Corresponding Author


Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

JSF and RAM conceived of and designed the project jointly. All writing and analyses were done by JSF, with guidance from RAM, with the exception of the SAS code for performing the meta-analysis and the Bayesian section of the Text S1, which were written by RAM.