Spawning migration: – Georges Bank: Short spawning migration – Barents Sea: Very long spawning migration    Central recruitment hypothesis: – Barents Sea: Match-mismatch – Georges Bank: Larval loss Temperature-recruitment relations: – Georges Bank: No clear temperature-recruitment relation – Barents Sea: Srong temperature-recruitment relationships Dominant prey for larvae and early juveniles -    Georges Bank: Pseudo/Paracalanus spp. – Barents Sea: Calanus finmarchicus Light, climate, spawning and larval growth: - Georges Bank: Extended spawning period in winter/spring - Barents Sea: Compressed spawning around equinox and rapid larval and juvenile growth thereafter