Experiments on induced maturation and spawningudof tiger prawn (P. monodon Fabricius) throughudeyestalk ablation

摘要

Details of experiments on the ovarian maturation of P. monodon through eyestalk abletlon inudthe brackish water impoundments (bheries) in the lower Sunderbans areas of West Bengal are given,udimmature females of tiger prawn (100 g and above) cultured in a bhari (65 ha) were ablated uni/udbilaterally and kept with an equal number of healthy mature males (80 g and above) in split bambooudenclosures (2.25 m x 2.25 m) in the Impoundment. The test animals were fed twice daily with theudminced flesh of freshly caught penaeids and bivalves from the area. Fast gonadal maturation andudsubsequent spawnings ware observed in a period of 10-21 days after the ablation. The prospects ofudsetting up a seasonal tiger prawn hatchery during the dry months of February-July when the fast rateudof water evaporation in these shallow coastal water bodies renders the salinity (26-32 ppt) highlyudsuitable for undertaking this venture are discussed.