Changing Pattern of Nitrite-Nitrogen and Ammonia-Nitrogen in Nursery Tank Water of the Freshwater Prawn (Macrobrachium rosenbergii) and Effect on the Larvae

doi:10.7671/j.issn.1001-411X.2002.03.019

Home > Archive>Volume 23, Issue 3, 2002 >67-70. DOI:10.7671/j.issn.1001-411X.2002.03.019

Changing Pattern of Nitrite-Nitrogen and Ammonia-Nitrogen in Nursery Tank Water of the Freshwater Prawn (Macrobrachium rosenbergii) and Effect on the Larvae
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                        10.7671/j.issn.1001-411X.2002.03.019
                    
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The paper deals with the effect of ammonia-nitrogen (NH 3-N t) and nitrite-nitrogen (NO - 2-N) in the nursery water on the larvae of Macrobrachium rosenbergii , in which the concentrations of NH 3-N t and NO - 2-N were tested. The result showed: when the concentration of ionized ammonia(NH 3-N m) exceeded to 0 11 mg/L over 6 days, larval metamorphosis would be delayed causing heavy larval mortality. Daily change in the concentration of NH 3-N t and NO - 2-N was irregular, but the concentration of NH 3-N t and NO - 2-N tended to increase gradually during nursery period.

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BI Ying zuo, LI GUI feng, LI Hai yan, CHENG Ying ji, LIN Lu cheng . Changing Pattern of Nitrite-Nitrogen and Ammonia-Nitrogen in Nursery Tank Water of the Freshwater Prawn (Macrobrachium rosenbergii) and Effect on the Larvae[J]. Journal of South China Agricultural University,2002,23(3):67-70

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