| 引用本文: | 陆莉莉,喻达辉,李雷旭,胡朝,翟子钦,陈健,吴颖瑞,白丽蓉.温度、盐度和pH对钝缀锦蛤耗氧率和排氨率的影响[J].海洋科学,2022,46(10):113-121. |
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| 温度、盐度和pH对钝缀锦蛤耗氧率和排氨率的影响 |
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陆莉莉, 喻达辉, 李雷旭, 胡朝, 翟子钦, 陈健, 吴颖瑞, 白丽蓉
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北部湾大学广西北部湾海洋生物多样性养护重点实验室, 广西 钦州 535011
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| 摘要: |
| 为探究温度、盐度和pH对钝缀锦蛤(Tapes dorsatus)耗氧率和排氨率的影响,作者采用室内实验生态学方法研究了不同温度、盐度和pH对钝缀锦蛤呼吸代谢的影响。实验设定了5个温度梯度(18℃、21℃、24℃、27℃、30℃)、5个盐度梯度(18、21、24、27、30)和5个pH梯度(5、6、7、8、9)。结果表明,温度对钝缀锦蛤的耗氧率影响显著(P<0.05),但对排氨率影响不显著(P>0.05),在温度18~30℃范围内,耗氧率随温度的升高而升高,而排氨率随温度的升高先降后升;盐度对该贝的耗氧率和排氨率影响极显著(P<0.01),耗氧率和排氨率随盐度升高先上升后下降,耗氧率和排氨率峰值分别出现在盐度为27和24;pH对钝缀锦蛤的耗氧率和排氨率影响不显著(P>0.05),pH为6~9时,钝缀锦蛤的耗氧率和排氨率变化幅度较小。在温度18~30℃,耗氧率与排氨率之比(O∶N)为5.56~45.4;在盐度18~30,O∶N为17.14~40.09;在pH5~9范围内,O∶N为27.59~40.41。研究结果为进一步研究钝缀锦蛤的生理生态奠定了一定基础。 |
| 关键词: 钝缀锦蛤(Tapes dorsatus) 温度 盐度 pH 耗氧率 排氨率 |
| DOI：10.11759/hykx20211007002 |
| 分类号: |
| 基金项目:国家自然科学基金面上项目(31873042);国家重点研发计划项目(2018YFD0901406);广西重点研发计划项目(2018AB52002);广西自然科学基金项目(2021GXNSFAA075008,2018JJA130308);国家海洋局北海市“十三五”海洋经济创新发展示范项目(Bhsfs002);广西高校中青年教师基础能力提升项目(2018KY0612);2021年度广西北部湾海洋生物多样性养护重点实验室重点培育项目(2021ZB02) |
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| Effect of temperature, salinity, and pH on the oxygen consumption rate and the ammonia excretion rate of Tapes dorsatus |
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LU Li-li, YU Da-hui, LI Lei-xu, HU Zhao, ZHAI Zi-qin, CHEN Jian, WU Ying-rui, BAI Li-rong
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Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, Beibu Gulf University, Qinzhou 535011, China
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| Abstract: |
| To explore the effects of temperature, salinity and pH on oxygen consumption rate and ammonia excretion rate of Tapes dorsatus. The effects of distinct temperature, salinity, and pH on the respiratory metabolism of T. dorsatus were studied by conducting an indoor experiment with ecological methods. Individually five temperature gradients (18 ℃, 21 ℃, 24 ℃, 27 ℃, 30 ℃), five salinity gradients (18, 21, 24, 27, 30), and five pH gradients (5, 6, 7, 8, 9) were set for the observations. The results demonstrated that the temperature had a significant effect on the oxygen consumption rate (P< 0.05), but no such significant effect was found on the ammonia excretion rate (P> 0.05). In the temperature range of 18~30 ℃, the oxygen consumption rate proliferated with the increase in temperature, while the ammonia excretion rate diminished initially and then elevated with the temperature surge. Salinity also demonstrated a significant effect on the oxygen consumption rate and the ammonia excretion rate (P< 0.01). The oxygen consumption rate and the ammonia excretion rate initially increased and then gradually diminished with increased salinity. The peak values of oxygen consumption rate and ammonia excretion rate appeared at the salinity gradient of 27 and 24, respectively. Conversely, the oxygen consumption rate and the ammonia excretion rate (P> 0.05) remained stable overall with the pH elevation, except when the pH was 6~9, where it slightly changed. The ratio of oxygen consumption rate to ammonia removal rate (O∶N) was found between 5.56 and 45.41 at 18~30 ℃. At a salinity gradient of 18~30, the O∶N ratio was observed between 17.14 and 40.09. In the range of pH 5~9, O∶N was measured between 27.59 and 40.41. The results provide a base for further study on the ecological physiology of T. dorsatus. |
| Key words: Tapes dorsatus temperature salinity pH oxygen consumption rate ammonia excretion rate |
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