Author Contributions
BL, AK, ES, AT, ML, AG, FK, and AM designed and contributed to the
original concept of the studies. BL and AG collected most of the
specimens and related data, BL and ML obtained mtDNA data and prepared
DNA libraries for ddRAD, AK conducted morphologic, diet and stable
isotope analyses, AT conducted stable isotope analysis; ES conducted the
most of bioinformatics, and BL, AK, ES, AG, FK and AM finalized the
manuscript. All authors participated in project design, and read and
approved the final manuscript.