Peng Maoxiao, Li Zhi, Liu Xiaojun, Niu Donghong, Lan Tianyi, Ye Bo, Dong Zhiguo, Li Jiale
Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.
National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China.
Front Physiol. 2019 Jul 17;10:911. doi: 10.3389/fphys.2019.00911. eCollection 2019.
To facilitate transplanting razor clam () populations to inland saline-alkaline waters (ISWs), we evaluated the tolerance of juvenile (JSC) to Ca and Mg concentrations, and determined the effects of these ions on JSC growth and physiological parameters. After 30 days stress, the tolerable ranges of JSC to Ca and Mg were determined to be 0.19 mmol⋅L-19.46 mmol⋅L and 0 mmol⋅L-29.54 mmol⋅L, respectively. The concentrations of Ca (less than 0.65 mmol⋅L or more than 3.24 mmol⋅L) and Mg (less than 0.37 mmol⋅L or more than 14.17 mmol⋅L) significantly inhibit JSC growth. Physiological enzyme activity no significant response when the concentrations range of Ca and Mg are 0.93 mmol⋅L-6.49 mmol⋅L and 0.37 mmol⋅L-14.77 mmol⋅L, respectively. For transplantation practice, these data indicate that only high concentrations of Ca (3.24-6.825 mmol⋅L) and Mg (14.77-33.69 mmol⋅L) in target inland saline-alkaline water had significantly impact on growth and physiological response. In addition, present study suggests that the increase in Ca and Mg ion concentrations caused by ocean acidification will not affect the survival, growth and physiology of . Current research suggests that can adapt to extreme changes in the marine environment (Ca and Mg) and may be an excellent candidate for inland saline-alkaline water transplantation practice.
为促进缢蛏种群向内陆盐碱水域（ISWs）移植，我们评估了缢蛏稚贝（JSC）对钙和镁浓度的耐受性，并确定了这些离子对JSC生长和生理参数的影响。经过30天的胁迫后，确定JSC对钙和镁的耐受范围分别为0.19 mmol·L⁻¹ - 9.46 mmol·L和0 mmol·L⁻¹ - 29.54 mmol·L。钙（低于0.65 mmol·L或高于3.24 mmol·L）和镁（低于0.37 mmol·L或高于14.17 mmol·L）的浓度显著抑制JSC生长。当钙和镁的浓度范围分别为0.93 mmol·L⁻¹ - 6.49 mmol·L和0.37 mmol·L⁻¹ - 14.77 mmol·L时，生理酶活性无显著反应。对于移植实践，这些数据表明，只有目标内陆盐碱水中高浓度的钙（3.24 - 6.825 mmol·L）和镁（14.77 - 33.69 mmol·L）对生长和生理反应有显著影响。此外，本研究表明海洋酸化导致的钙和镁离子浓度增加不会影响缢蛏的生存、生长和生理。当前研究表明，缢蛏能够适应海洋环境（钙和镁）的极端变化，可能是内陆盐碱水移植实践的优秀候选对象。
