Description of the maturing fraction of polar cod.

Percentage maturing individuals (GSI>10%), their gonado-somatic index (mean ±SD) and the estimated number of eggs per female per size class (total length, cm) from the Arctic (n = 207) and Atlantic (n = 107) domains, combined for January 2011, 2012, and 2013. Different letters (a, b, c) represent significant differences (Welch-ANOVA and Dunnett's T3) in GSI between size classes for each sex and domain.