Israeli scientists have developed a novel method for generating single-sex populations of prawns to both boost the productivity of aquaculture farms and as a biocontrol measure against invasive species and pests.
Male sexual differentiation in crustaceans is regulated by the androgenic gland. Removing the androgenic gland in juvenile males causes them to become "feminised" and capable of producing eggs and when these "neo-females" are mated with normal males, the entire offspring is male.
- See more at: http://www.worldfishing.net/news101/industry-news/generating-single-sex-prawn-populations#sthash.LjnEoOya.dpuf