Fig. 2 in Estimating size at first maturity (L ) from Gonadossomatic Index (GSI) data

Fig. 2. Logistic curves of relative frequency of reproductive females as function of size class. (black losange) Logistic curve with an asymptote at one and L 50 of 17.3. (white square) Frequencies of reproductive females from the simulation of Fig. 1, considering animals captured in the three months of greatest reproductive activity. In this case, asymptote is at 0.75 (a maximum of 75% of animals could be identified as reproductive). (black triangle) Result from applying a regular logistic, with asymptote at one, to the data of the frequencies of reproductive females from the simulation of Fig. 1.