The present study offers a promising alternative method to produce
YY supermales,which can be applied to awide range of fish species. This
technique is expected to contribute to the development of mono-sex
cultures in important aquaculture species.
Fig. 3. The all-male F2 generation at 4-month of age produced by crossing YY supermales
(F1 generation) and wild-type XX females (A). F1 YY supermales produced in the present
study at 2 years of age (B). A control albino intact XY male (C). Bars: 1 cm and 5 cm in A
and B–C, respectively.