I am considering joining the recent boycott of Elsevier, however I work with biologists on theoretical/mathematical biology (in particular, evolutionary game theory and population biology). However, It seems like Journal of Theoretical Biology is the premier journal for technical work in this field, and my co-authors often suggest it.
What are some (preferably, open-access) alternatives to JTB?
You can consider BMC Evolutionary Biology and PLoS ONE for game theoretical studies. Unfortunately both are open access, which means there is a hefty fee involved.