Acute Toxicity of Ammonia to Larval Black Porgy,Acanthopagrus Schlegeli

氨對黑鯛魚苗之急毒性研究

周昱翰(Yu-Han Chou) ； 陳瑤湖(Yew-Hu Chien)

《臺灣水產學會刊》 17卷1期 (1990/03) Pp. 53-57

https://doi.org/10.29822/JFST.199003.0006

摘要

將草蝦糠蝦苗於水溫30℃，暴露於6.4、7.3、8.2、9.1不同酸鹼度，不同氨濃度（24、12、6及0.12氨-氮）之海水（35 ppt）。在所有氨溶液中，氨之毒性以在pH 9.1時最大，其次依序為6.4、7.3及8.2。當pH大於8.2時，未解離氨為致毒之型式。但當pH下降到6.4時，由於解離氨佔了99.8％以上，氨之毒性並未減弱。蝦苗培育中宜監視氨及避免pH之上升與突降。

關鍵字

黑鯛 ； 氨 ； 急毒性

並列摘要

Penaeus monodon mysis second substage(M2)were exposed to 30℃,35 pptseawater having different concentrations of ammonia(24,12,6 and 0.12 mg/Lammonia-N)at 6.4,7.3,8.2 and 9.1 of pH levels.Ammonia toxicity was thehighest at pH 9.1 and with a decreasing order of 6.4,7.3 and 8.2 at all concentrationstested.It indicated that NH3 was the toxic form as the pH was higherthan 8.2.However,ammonia toxicity did not decrease when pH level droppedto 6.4 from 8.2 due to an increased percentage of NH(superscript +)4 in a given ammonia.

並列關鍵字

Black Porgy ； Ammonia ； Acute Toxicity