Delineating yellowfin sole (Limanda aspera) reproduction in the northern Bering Sea provides information across the eastern Bering Sea continental shelf

Yellowfin sole (Limanda aspera) is an abundant, commercially harvested flatfish that ranges across the northern and southeastern Bering Sea continental shelf. In recent years, summer bottom trawl survey of (SEBS) conducted by National Marine Fisheries Service’s Alaska Science Center (AFSC) extended into (NBS) in August. This opportunity allowed for describing yellowfin reproductive parameters NBS, such as female length age at maturation, status, sex ratio distribution. Estimates 50% sexual maturity were 10.11 years (A50; 95% CI: 9.47–10.76 years; n = 209) 28.47 cm (L50; 27.16–29.68 cm; 212). Histology indicated much mature population was approaching end spawning. spawning timing (summer) appears to be synchronous NBS SEBS. There evidence part connected a recognized migratory group from A higher proportion females than males observed, which varied year stratum. negatively related warmer temperature positively location (western longitudes latitudes). exhibit similar size depth spawning, proportions with those inhabiting These results provide further information fisheries managers on stock throughout this region. Spatial temporal aspects reproduction, however, should more thoroughly investigated.