Fig. 6 in Fig. 7 in Reproduction of the Blue Jack Mackerel, , in Western Portugal: Microscopic Gonad Analysis Reveals Indeterminate Fecundity and Skipped Spawning Patterns.

Fig. 6. Fecundity type of blue jack mackerel (Trachurus picturatus) off the western coast of Portugal, assessed from the variation throughout the spawning season of a) oocyte size frequency distribution; b) abundance of early developing oocytes (white) and advanced vitellogenic oocytes (grey); c) mean oocyte diameter (OD) of the advanced vitellogenic oocytes. Boxplot represents median, first and third quartiles, whiskers represent 1.5 × interquartile range and dots are possible outliers. 1st half, month first fortnight; 2nd half, month second fortnight.