OXYGEN-CONSUMPTION AND AMMONIA-N EXCRETION OF PRAWNS (PENAEUS-CHINENSIS) EXPOSED TO AMBIENT AMMONIA

被引:21
作者
CHEN, JC [1 ]
NAN, FH [1 ]
KUO, CM [1 ]
机构
[1] NATL TAIWAN UNIV, INST FISHERIES SCI, TAIPEI 10764, TAIWAN
关键词
D O I
10.1007/BF01060359
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Both oxygen consumption and ammonia-N excretion of Penaeus chinensis had a negative power regression with body weight. When P. chinensis juveniles (0.079 +/- 0.004 g) were subjected to increased ambient ammonia-N (un-ionized plus ionized ammonia as nitrogen) in the range of 0.015-5.529 mg/L at 25-degrees-C and pH 7.93-8.24, oxygen consumption (O2 mg/g/h) and ammonia-N excretion (mg/g/h) increased. Oxygen consumption and ammonia-N excretion of the shrimps exposed to control (0.015 mg/L) and 5.529 mg/L ammonia-N was 0.858 to 1.628, 1.159 to 2.675 O2 mg/g/h and 0.028 to 0.049 and 0.942 to 2.004 ammonia-N mg/g/h, respectively. Both oxygen consumption and ammonia-N excretion of the shrimp had a linear correlation after 6, 10, and 14 h; and had a power correlation after 20 h with ambient ammonia-N in the range of 0.015-5.529 mg/L. Mean cumulative amount of dissolved oxygen consumed in 20 h was 1.518, 1.786, 1.897, 2.085, 2.193, 2.322, and 2.526 mg; and a mean cumulative amount of excreted ammonia-N in 20 h was 0.059, 0.501, 0.671, 0.792, 1.527, 1.780, and 1.964 mg for individual P. chinensis exposed to 0.015, 0.618, 1.182, 2.112, 2.876, 4.381, and 5.529 mg/L ammonia-N, respectively.
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页码:377 / 382
页数:6
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