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不同温度和盐度对大竹蛏耗氧率和排氨率的影响
聂鸿涛,王海伦,邢宁宁,杨 凤,闫喜武
大连海洋大学
摘要:
本文在实验室条件下,研究了不同温度和盐度对大竹蛏耗氧排氨的影响。实验设置12、17、22、27和32℃五个温度梯度和12、17、22、27和32五个盐度梯度,结果表明:随着温度的升高耗氧率先降低再逐渐升高在,在温度为22℃时达到最小值为1.571 mg/(g?h),排氨率先降低后升高再降低,在温度达到17℃时达到最小值0.127 mg/(g?h)。随着盐度增加呈现出耗氧率先升高后降低,在盐度为22时达到最大值3.106 mg/(g?h),排氨率先降低在升高,在盐度为27时达到最小值为0.145 mg/(g?h)。在盐度32时,不同温度的O:N范围是5.525-79.037。在温度12℃时,不同盐度下的O:N范围是4.378-16.755。不同温度下耗氧率Q10变化范围为1.054-2.421,排氨率的Q10变化范围是0.748-1.256。研究结果为进一步完善大竹蛏的人工养殖技术提供参考。
关键词:  大竹蛏  温度  盐度  耗氧率  排氨率
DOI:
分类号:S968
基金项目:国家科技攻关计划;国家高技术研究发展计划(863计划)
Study on the effect of temperature and salinity on oxygen consumption and ammonia excretion in the grand jackknife clam Solen grandis
NIE Hong-Tao1, Wang Hailun2, Xing Ningning2, Yang Feng2, Yan Xiwu2
1.Engineering and Technology Research Center of Shellfish Breeding of Liaoning Province,Dalian Ocean University;2.Dalian Ocean University
Abstract:
Temperature and salinity are the main factors affecting the metabolism of aquatic biological activity, and these environmental factors vary seasonally. This study investigated the effects of temperature and salinity on oxygen consumption and ammonia excretion of the grand jackknife clam Solen grandis. The experimental set up included a temperature gradient (12、17、22、27 and 32 °C) and a salinity gradient (12、17、22、27 and 32). The results show that temperature has a significant effect on oxygen consumption and ammonia excretion rates in this strain (P< 0.05). As temperature increased, oxygen consumption and ammonia excretion decreased first and then increased. The lowest oxygen consumption rate is 1.571 mg/(g?h) at 32 °C, and the lowest ammonia excretion rate is 0.127 mg/(g?h) at 17℃. As salinity increased, oxygen consumption increased first and then decreased, whereas ammonia excretion decreased first and then increased. The highest oxygen consumption rate is 3.106 mg/(g?h) at the salinity of 22, and the lowest ammonia excretion rate is 0.145 mg/(g?h) at the salinity of 27. At 12 °C, the O: N ratio ranged from 4.378 to 16.755 as salinity increased from 12 to 32. At salinity 32, the O: N ratio ranged from 5.525 to 79.037 as temperature increased from 12 to 32°C. The information on its response to different temperature and salinity has implications in the S. grandis aquaculture industry.
Key words:  Solen grandis  Temperature  Salinity  Oxygen consumption  Ammonia excretion
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