Intelligence
Tilapia sex-reversal procedures have positives, but regulatory barriers and concerns about welfare, worker safety and environmental impacts remain.
Innovation & Investment
A newly developed technology for producing all-male populations of freshwater prawns by temporal silencing of the androgenic gland insulin-like gene marks the first RNA interference-based biotechnology to be commercialized in the field of aquaculture.
Health & Welfare
The addition of methyltestosterone to freshwater prawns diets did not significantly change the percentage of males in the population, but reduced survival.
Health & Welfare
Sex-reversal in cultured fish can be easily controlled – females grow more than males and mature later – because the process of gonadal differentiation is very labile.