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总度对太平洋海幼鱼Haliotis discus hannai生长表现和化的影响

Meng Zhang¹, Jiaqi Li², Minghui Jiao¹

¹College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China; State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong, 266071, China; Laboratory for Marine Ecology and Environmental Science, Laoshan Laboratory, Qingdao, Shandong, 266237, China.

Marine environmental research

|September 30, 2023

概括

海水总度 (TA) 的下调会对鱼的生长和的化产生负面影响,即使pH值稳定. 调节TA可以促进鱼的生长,这表明TA对水产养殖的弹性至关重要.

科学领域:

海洋生物学海洋生物学
水产养殖是水产养殖的一种方式.
海洋酸化研究研究海洋酸化研究

背景情况:

海洋酸化主要由pH和pCO2监测,对海洋化生物构成风险.
在稳定的pH条件下,总度 (TA) 在海洋无脊椎动物生长和化中的作用仍然不太清楚.
鱼 (Haliotis discus hannai) 是一个商业上重要的物种,容易受到环境变化的影响.

研究的目的:

研究操纵海水总度 (TA) 对太平洋海 (Haliotis discus hannai) 的生长和化的影响.
为了确定TA水平是否会影响海健康和贝完整性,而不依赖于海水pH值.

主要方法:

一个45天的受控实验操纵海水TA水平 (上调和下调),同时保持恒定的pH (8.1NBS).
评估鱼生长表现 (体质组织生长).
使用扫描电子显微镜 (SEM) 分析外石化,并测量外碳 (C:N) 比率.
评估海水碳酸盐化学成分,包括二氧化碳缓冲能力和碳酸和度 (Ω).

主要成果:

低调TA显著降低了体质组织生长和形的受损,其特点是缺失周周和稀疏的碳酸沉积.
与对照组相比,TA上调显著提高了鱼生长性能.
低调TA导致二氧化碳缓冲能力降低和Ω降低,与外侵蚀和更轻,更薄的外相关.
在TA下调组中,的C:N比率明显较低,这表明无机碳合并减少.

结论:

海水TA是影响鱼生长和化的关键因素,即使pH值保持在环境水平.
减少TA通过降低CO2缓冲能力和 Ω对海产生负面影响,从而对的完整性和生长产生不利影响.
鱼水产养殖应考虑管理TA水平和Ω,可能通过综合海藻养殖或直接增强TA,以提高对海洋酸化的抵抗力.

关键词:

水产养殖是水产养殖的一种方式.) 的缓冲能力.碳酸盐化学碳酸盐化学软体动物软体动物海洋酸化是指海洋的酸化.

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