Data exploring the effects of food availability on growth of sea bass reared under environmental stressors of ocean acidification and warming

This dataset contains four Excel .xlsx spreadsheets of measurements relating to the combined effects of food availability, ocean acidification and ocean warming (OAW) on fish growth. Fish (sea bass, Dicentrarchus labrax) were reared in four treatment groups, defined by water temparatures of 15°C or 20°C and concentration of carbon dioxide (PCO2) of 650 µatm (ambient acidification) or 1750 µatm (high acidification), all under ad libitum feeding. Following this, feeding trials were performed with ad libitum and 25% of ad libitum rations at ambient and elevated (+1100 µatm) levels of PCO2. Details of the four spreadsheets are as follows: - Data_Daily Food.xlsx: Mass (g) of food distributed per tank per day during the feeding trial. Abbreviations: AL, ad libitum; 25AL, 25% ad libitum; Tot_fish, Total number of the fish in the tank.- Data_Enzymes.xlsx: Values of total and specific activities of trypsin, phosphatase alkaline (PA), amylase and aminopeptidase N (LAP) measured on randomly selected fish. Abbreviations: AL, ad libitum; 25AL, 25% ad libitum; bb, Brush border; scrap, Scrapping. - Data_Mass.xlsx: Individual mass of the fish at the beginning and the end of the feeding trial. Abbreviations: AL, ad libitum; 25AL, 25% ad libitum; Fish_nber, Fish number; Mass_1, Initial mass; Mass_2, Final Mass. - Data_Stomach pH.xlsx: pH values of the stomach of randomly selected fish, measured post feeding, using a pH sensor. Abbreviations: AL, ad libitum; 25AL, 25% ad libitum; Fish_nber, Fish number. The related publication aimed to determine whether the provision of ad libitum rations may provide ample energy to organisms in multiple stressor environments, thereby allowing them to compensate for potential negative impact of sub-optimal levels due to the stressors (in this case, temperature and/or PCO2) on energy acquisition, dissipation and allocation.

本数据集包含四份Excel .xlsx格式电子表格，记录了食物可获得性、海洋酸化与海洋变暖（OAW）对鱼类生长的复合效应相关测量数据。实验所用鱼类为欧洲海鲈（*Dicentrarchus labrax*），共设置四组处理条件，分别由水温15℃或20℃、二氧化碳分压（PCO2）650 µatm（常规酸化水平）或1750 µatm（高酸化水平）定义，所有组均采用自由采食（ad libitum）喂养方式。
后续开展了摄食实验，分别在常规酸化与升高（+1100 µatm）的PCO2水平下，设置自由采食及25%自由采食的摄食梯度。
四份电子表格详情如下：
- Data_Daily Food.xlsx：摄食实验期间每养殖缸每日投喂的食物总质量（单位：g）。缩写说明：AL（ad libitum，自由采食）、25AL（25%自由采食）、Tot_fish（养殖缸内鱼类总数量）。
- Data_Enzymes.xlsx：对随机选取的鱼类体内胰蛋白酶、碱性磷酸酶（PA）、淀粉酶以及氨肽酶N（LAP）的总活性与比活性进行测定所得的数值。缩写说明：AL（ad libitum，自由采食）、25AL（25%自由采食）、bb（Brush border，刷状缘）、scrap（Scrapping，刮取物）。
- Data_Mass.xlsx：摄食实验开始与结束时的鱼类个体体质量数据。缩写说明：AL（ad libitum，自由采食）、25AL（25%自由采食）、Fish_nber（鱼类编号）、Mass_1（初始体质量）、Mass_2（终末体质量）。
- Data_Stomach pH.xlsx：摄食后使用pH传感器测定的随机选取鱼类的胃内pH值。缩写说明：AL（ad libitum，自由采食）、25AL（25%自由采食）、Fish_nber（鱼类编号）。
相关研究旨在探明，在多重胁迫环境中，提供自由采食的食物是否能够为生物体提供充足能量，使其能够补偿因胁迫因子（本研究中为温度及/或PCO2）导致的能量获取、消耗与分配层面的亚最优水平所带来的潜在负面影响。