Fig. 4
From: Timing of the reproductive cycle of waved whelk, Buccinum undatum, on the U.S. Mid-Atlantic Bight
Inflection point for each month sampled and all months combined indicating allometric growth patterns based on the variance between iterative tests on linear models of penis length (mm) and total shell length (mm) for males. The dotted black line indicates the value for each month with the lowest standard error. Maturity stage, based on macroscopic examination of the gonad are indicated by the color of the points (Immature: white; Developing: gray; Mature: black)