Neo-females production and all-male progeny of a cross between two Indian strains of prawn (Macrobrachium rosenbergii): Population structure and growth perform... Academic Article uri icon

abstract

  • Culturing all-male giant freshwater prawn (Macrobrachium rosenbergii) presents a promising avenue for increasing yield and income. A sex reversal technology through androgenic gland (AG) manipulation was introduced, posing an increased risk of inbreeding. Thus, a scheme for Kerala (K) and West Bengal (WB) strains crossing using neo- females from one strain with males from the other strain was suggested. Microsurgical sex reversal was applied in juvenile males of the Kerala strain at developmental stages of PL 15, PL 30, PL 45 and PL 60. Improved success rates of feminization were achieved when the intervention was performed at early developmental stages. Prawns operated at the PL 15 and PL 30 stages began developing ovaries as early as 105 days after metamorphosis and were able to produce offspring. A grow-out experiment in earthen ponds of all-male …

publication date

  • May 20, 2014