Table S1.

Summary of the samples collected and analyzed in this study

LocationCodeNCoordinatesDate% SpawningPutative ecotype
Gullmaren (NS)*GUL458.17N, 11.30EFebruary 200225Pelagic
Kattegat (NS)KAT2057.25N, 12.11ESeptember 2009Not recordedPelagic
Barsebäck (TZ)*BAR2255.45N, 12.53EApril 20034Pelagic
Dabki (BS)*DAB2454.45N, 16.30EMay 20034Pelagic
Gdynia (BS)*GDY2454.45N, 18.30EMay 20034Pelagic
Bornholm (BS)*BOR2255.42N, 16.11EMarch 2003100Pelagic
Latvian Sea (BS)*LAT2456.25N, 19.44EApril 200369Pelagic
Irbe (BS)*IRB2457.44N, 22.22EMay 200375Demersal
Öland (BS)ÖLA2457.14N, 17.06EApril to June 200492Demersal
Kvädöfjärden (BS)*KVÄ2458.01N, 16.46EMay 200358Demersal
Hanko (BS)HAN2259.82N, 22.99EJune 2012Not recordedDemersal
Åland (BS)*ÅLA2460.09N, 19.42EMay to June 20038Demersal
Helsinki (BS)*HEL2460.15N, 25.30EMay 20030Demersal
  • N, sample size; % Spawning, percentage of the sampled individuals that were ready to spawn (with running roe and sperm) at the time of collection. Locations where more than 90% of sampled individuals were ready to spawn are considered as reference demersal (Öland) and pelagic (Bornholm) populations.

  • * Samples from these locations were originally obtained by Florin and Höglund (15).