Figure 3. The consecutive gonadal development and spawning of individual B. belcheri in Experiment II.

The animal anterior is shown to the right, and the belly faces down (except for hermaphrodite #4). The ovary of hermaphrodite #4 is highlighted by a white dotted circle. Red arrows indicate that the spawning occurred. The days of photographing these animals were shown at the top of the figure and the first spawning day was defined as zero dafs (day after first spawning). It should be noted that hermaphrodite #4 spawned ten days earlier than the other eight animals for their first spawning, and the information shown at the top of the figure is derived from the latter, thus the numbers should be plus 10 for hermaphrodite #4. Female #12 died after 118 dafs.