Acknowledgements
We would like to thank Anssi Laurila, Dennis Hasselquist, Ane Timenes
Laugen, Björn Rogell and Markus Zöttl for discussion and comments on an
earlier version of the manuscript, and everyone who helped us by
collecting and proving samples. Peter Söderling, Carl Tamario, Kristofer
Bergström and Per Koch-Schmidt for Harfjärden, Lervik, Okne and Kosta,
Pär Byström and Rickard Linderot for Ängerån, Staff at DTU Aqua, and in
particular Henrik Dalby Ravn for the Danish samples, Henrik C Andersson
for Yngern and Snäckstavik, Marcus Hall for Hamnaryd, and Olof Engstedt
and Tobias Berger for Vambåsa. We would also like to thank Emelie
Nilsson and Diego Brambilla for help with the bioinformatical analyses.
The authors would like to acknowledge support from Science for Life
Laboratory, the National Genomics Infrastructure, NGI, and Uppmax for
providing assistance in massive parallel sequencing and computational
infrastructure. Funding was provided by the Linnaeus University (to AF),
The Swedish Research Council FORMAS (to AF and PT grant Dnr.
2017-00346), and Nilsson-Ehle-donationerna Kungliga Fysiografiska
Sällskapet i Lund (to JS and YY grant Dnr 39409).