| 摘要: |
| 设计双因子实验研究了水温25.0℃±0.5℃下,盐度(5,15,30)和Ca2+质量浓度(175,350,700,1 400,2 800 mg/L)对中国明对虾(Fenneropenaeus chinensis)稚虾耗氧率的影响,实验对虾的湿体质量为0.301 g±0.041 g。实验结果表明:(1)不同盐度下,中国明对虾稚虾耗氧率的大小顺序为R5>R30>R15。其中,盐度15下对虾的耗氧率显著低于盐度5和30下的耗氧率(P<0.05);(2)不同Ca2+质量浓度下,中国明对虾稚虾耗氧率的大小顺序为R2 800>R175>R700>R1 400>R350。其中,Ca2+质量浓度为350 mg/L组对虾的耗氧率显著低于其它处理组,Ca2+质量浓度为2 800 mg/L组对虾的耗氧率显著高于其它处理组(P<0.05),而Ca2+质量浓度为175,700和1 400 mg/L组间对虾的耗氧率差异不显著(P>0.05);(3)盐度和Ca2+质量浓度的交互作用显著影响中国明对虾稚虾的耗氧率(P<0.05)。 |
| 关键词: 盐度 Ca2+质量浓度 中国明对虾(Fenneropenaeus chinensis) 耗氧率 |
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| 基金项目:国家自然科学基金资助项目(30571441) |
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| Effects of salinity and Ca2+ concentration on the oxygen consumption rate of juvenile Fenneropenaeus chinensis |
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| Abstract: |
| Designed two-factor experiment was set up to investigate the effects of salinity and Ca2+ concentration on the oxygen consumption rate of juvenile Fenneropenaeus chinensis with the initial wet body weight of 0.301 g±0.041 g under water temperature of 25.0℃±0.5℃. Three salinity levels were 5, 15 and 30, respectively, and five Ca2+ concentrations of every salinity levels were 175, 350, 700, 1 400, 2 800(mg/L), respectively. The results were as follows: (1) Salinity affected the oxygen consumption rate of the juvenile F. chinensis significantly(P<0.05). The oxygen consumption rate of the juvenile F. chinensis under three salinity levels showed a declining gradient of R5>RR30>R15, and there were significant differences among three treatments(P<0.05); (2) Ca2+ concentration affected the oxygen consumption rate of the juvenile F. chinensis significantly. The oxygen consumption rate of the juvenile F. chinensis under five Ca2+ concentration levels showed a declining gradient of R2 800>R175>R700>R1 400>R350. The oxygen consumption rate under 2 800mg/L of Ca2+ concentration was significantly higher than that of other treatments(P<0.05), while under 350 mg/L of Ca2+ concentration, it was significantly lower than those of other treatments(P<0.05); (3) The interaction between salinity and Ca2+ concentration also significantly affected the oxygen consumption rate of the juvenile F. chinensis(P<0.05), while the effect was lower than those of salinity and Ca2+ concentration, respectively. |
| Key words: salinity Ca2+ concentration Fenneropenaeus chinensis oxygen consumption rate |
