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Effect of ammonia and nitrite on vigour, survival rate, moulting rate of the blue swimming crab Portunus pelagicus zoea
Liao, Y.Y.; Wang, H.H.; Lin, Z.G. (2011). Effect of ammonia and nitrite on vigour, survival rate, moulting rate of the blue swimming crab Portunus pelagicus zoea, in: Le Vay, L. et al. (Ed.) International Symposium on aquaculture, biology and management of commercially important crabs. Aquaculture International, 19(Spec. Issue 2): pp. 339-350
In: Le Vay, L. et al. (Ed.) (2011). International Symposium on aquaculture, biology and management of commercially important crabs. Aquaculture International, 19(Spec. Issue 2). Springer: Dordrecht. 215-394 pp., more
In: Aquaculture International. Springer: London. ISSN 0967-6120, more
Peer reviewed article  

Also published as
  • Liao, Y.Y.; Wang, H.H.; Lin, Z.G. (2011). Effect of ammonia and nitrite on vigour, survival rate, moulting rate of the blue swimming crab Portunus pelagicus zoea. Aquacult. Int. 19(Spec. Issue 2): 339-350. https://hdl.handle.net/10.1007/s10499-010-9398-4, more

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Keywords
    Ammonia; Nitrites; Toxicity; Zoeae; Portunus (Portunus) pelagicus (Linnaeus, 1758) [WoRMS]; Brackish water
Author keywords
    Portunus pelagicus; Zoea; Nitrite; Ammonia; Acute toxicity

Authors  Top 
  • Liao, Y.Y.
  • Wang, H.H.
  • Lin, Z.G.

Abstract
    The effects of ammonia and nitrite on vigour, survival rate, moulting rate of zoea of blue swimming crab, Portunus pelagicus, were studied. A total of five nitrite-N treatments (26.67, 53.34, 106.68, 213.36, 426.72 mg/l) and a control (no nitrite-N added) were set up for the acute nitrite-N toxicity experiment; a total of five ammonia-N treatments (8.43, 16.86, 33.72, 67.44, 134.88 mg/l) and a control (no ammonia-N added) were set up for the acute ammonia-N toxicity experiment. The results showed that the vigour, survival rate and moulting rate of zoea of the blue swimming crabs exposed to over 53.34 mg/l were significantly different (P < 0.05) from the control group. The zoea LC(50) values (mg/l) of nitrite-N were 179.47, 76.56, 66.70, 37.49, 25.01, 25.35, 25.34 mg/l for 24, 36, 48, 60, 72, 84, 96 h, respectively. The vigour, survival rate and moulting rate of zoea of the blue swimming crabs exposed to over 16.86 mg/l were significantly different (P < 0.05) from the control group. The zoea LC(50) values (mg/l) of ammonia-N were 51.04, 39.62, 38.72, 24.43, 16.90, 13.42, 11.16 mg/l for 24, 36, 48, 60, 72, 84, 96 h, respectively. The zoeae are highly sensitive to ammonia and nitrite, and the toxicity of ammonia and nitrite on Portunus pelagicus decrease with development of this crab.

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