Fig. 3
From: Sex-changing patterns of Akoya pearl oyster (Pinctada fucata)
Four typical sex-changing patterns of Akoya pearl oyster (P. fucata) (a) all-period male, (b) all-period female, (c) female changed to male, (d) changing between male and female. Sex-changing pattern was based from the sex of Akoya checked by biopsy at seven sampling times. Each symbol indicates: Sp, sperms; Ooc, oocyte. Scale bar, 200 μm