Maheswarudu, G and Pillai, N N and Nair, K R Manmadhan (2000) Broodstock development and spawning in Penaeus indicus. In: Marine Fisheries Research and Management. CMFRI; Kochi, Kochi, pp. 714-726.
Among cultivable native species, Penaeus indicus occupies an important position due to its tolerance to wide range of salinity, fast growtK compatibility in high density culture, wide distribution and demand in export market. P. indicus broodstock can be developed using adults collected from the wild or from grow out ponds or by reusing healthy females after spawning in the hatchery. The size of prawn used for broodstock development should preferably be above 145 mmT.L. (20 g) for females and 140 mm T.L. (17 g)for males. Pens, cages, tanks with or without flow through system, recirculation system etc. are in vogue for broodstock development. 1001 tanks with in situ biological filter is used for the brood stock development in CMFRI. Stocking density of prawns per cubic meter (sex ratio I : Ij was found ideal. Three tanks of the above size can meet the broodstock requirements of a hatchery of 18 million capacity. Unilateral eyestalk ablation of females proved to be effective. Electrocautery apparatus was usedfor this purpose. Experiments also revealed that unablated P. indicus, can also be induced to mature and spawn by environmental and feed manipulation. Unablated P. indicus maintained in recirculation system and fed with intertidal oligochaetes, clam and squid meat attained maturity and spawned repeatedly over a prolonged period. Maintaining the pH of water between 8-8.2 and controlling the light intensity in broodstock tanks found to fasten maturation.
|Item Type:||Book Section|
|Uncontrolled Keywords:||Broodstock development; spawning; Penaeus indicus|
|Subjects:||Aquaculture > Induced Breeding
|Divisions:||CMFRI-Cochin > Marine Capture > Crustacean Fisheries|
|Depositing User:||Arun Surendran|
|Date Deposited:||04 Oct 2010 05:43|
|Last Modified:||09 Sep 2015 15:26|
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