Kristiina Nygren, Andreas Wallberg, Nicklas Samils, Jason E Stajich, Jeffrey P Townsend, Magnus Karlsson and Hanna Johannesson*
* Corresponding author: Hanna Johannesson hanna.johannesson@ebc.uu.se
BMC Evolutionary Biology 2012, 12:229 doi:10.1186/1471-2148-12-229