Fig. 1 in Estimating size at first maturity (L ) from Gonadossomatic Index (GSI) data

Fig. 1. Computer simulation of a growing age-group with temporal relative frequency at three different reproductive stages (maturing, spawning, post-spawning). For simplicity, each maturity stage has a standard deviation of one month and is one month apart. In this simulation L 50 is 17.3, attained at age 10, when most of the females are identified as reproductive.