摘要
本文研究了草鱼稚鱼血清钾、钠、钙、氯、无机磷和尿素氮含量的周年变动规律,分析了水温、体重对上述血液化学成分的影响。结果显示其周年变动无一定规律性可循。血清钠、氯变动辐度较小,无机磷和尿素氮变动幅度较大,幅值约有4倍。水温与血清钾显示正相关(P≤0.05),与钠、钙显示负相关(P≤0.01,P≤0.05)。血清钠、尿素氮有随体重增加含量增高的趋势,而钾却显著减少。
The paper is the second part of haematolocal studies on the grass carp (Ctenopharyngodon idellus) fingerlings. One year old fishes were obtained from the Fish Farm of Institute of Hydrobiology, in March, 1980, and February, 1981, Altogether 454 healthy fishes were used for clinical tests. At the time of sampling, the fish on average measured 17.15cm (10.1—26 cm) and weighed 56.22g(10.3—200g). Concentrations of sodium, potassium, calcium, chloride, inorganic phosphorus and urea nitrogen in serum, their monthly variations and factors affecting these parameters were described in the present paper. The annual mean concentrations of serum electrolytes and urea nitrogen of the fingerlings were: sodium, 122.31 mmol/L (S.D.+14.44); potassium, 4.17 mmol/L(S.D.±1.36); calcium, 2.07 mmol/L(S.D.±0.42); chloride, 89.3 mmol/L (S.D.±12.97); sodium chloride, 518.66mg/l (S.D.±71.90); inorganic phosphorus, 7.84mg/l(S.D.±3.22). Though contents of serum electrolytes and urea nitrogen fluctuated within a year, such fluctuations did not show any clear patterns. At high water temperatures, concentration of potassium increased and those of sodium and calcium decreased. But levels of chloride, inorganic phosphorus and urea nitrogen remained constant. In addition, contents of sodium and urea nitrogen increased, and potassium content decreased with increased body weight. Contents of calcium, chloride and inorganic phosphorus did not vary with both weight.
出处
《水生生物学报》
CAS
CSCD
北大核心
1991年第3期220-226,共7页
Acta Hydrobiologica Sinica
关键词
草鱼
血液学
电解质
尿素氮
Grass carp
Juvenile fish
Haematology
Electrolytes
Urea nitrogen
