莼菜降解对日本鲽鱼(Paralichthys olivaceus)生长性能和抗氧化能力的影响

IF 2.1 3区 农林科学 Q2 FISHERIES Fishes Pub Date : 2023-12-05 DOI:10.3390/fishes8120598
Yingming Yang, Wenlong Li, Run Wang, Dan Xu, Yadong Chen, Zhongkai Cui, Songlin Chen
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引用次数: 0

摘要

黄海大规模藻华对海洋生物和水产养殖业构成严重威胁,主要是由增生Ulva prolifera (U. prolifera)过度生长引起的。本研究旨在评价藻藻降解对牙鲆生长性能和抗氧化能力的影响,并筛选出可耐受藻藻降解条件的候选牙鲆科(标记2101-2108,杂交建立)。因此,进行了为期60天的增生性菌暴露实验。结果表明,增殖藻降解水体中Na、K、Mg、Fe元素含量显著增加。在增殖铀藻降解条件下,比目鱼的特定生长率和存活率显著降低,而2101和2103比目鱼科的生长性能较阳性对照(PC)组好。此外,结果表明,血清中总抗氧化能力(T-AOC)、转氨酶和碱性磷酸酶(AKP)活性显著降低,而2103家族的活性较高。此外,U. prolifera降解显著提高了肝脏超氧化物歧化酶(SOD)活性和谷胱甘肽(GSH)含量,同时降低了过氧化氢酶(CAT)活性和丙二醛(MDA)含量。其中,2103比目鱼家族的SOD和CAT活性高于2101比目鱼家族和PC组。2103比目鱼科鱼鳃SOD和CAT活性显著高于PC组。同样,抗氧化相关基因(sod和cat)的表达在肝脏和鳃中同步上调或下调,以响应藻的降解。结果表明,藻藻降解降低了牙鲆的生长性能,影响了牙鲆的抗氧化能力,而2103科牙鲆在藻藻降解条件下具有更好的优势。因此,2103比目鱼科可以被认为是潜在的可耐受增殖乌氏菌降解的比目鱼科。富藻降解水体中铁含量的增加可能是引起牙鲆生理变化的主要原因之一。
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Effects of Ulva prolifera Degradation on Growth Performance and Antioxidant Capacity of Japanese Flounder (Paralichthys olivaceus) Family
Massive macroalgae blooms, primarily caused by the overgrowth of Ulva prolifera (U. prolifera) in the Yellow Sea of China, pose a severe risk to both marine organisms and the aquaculture industry. This study’s aim was to evaluate the impact of U. prolifera degradation on the growth performance and antioxidant capacity of Japanese flounder (Paralichthys olivaceus) and select some potential Japanese flounder families (labeled 2101–2108, established by crossbreeding) tolerating U. prolifera degradation conditions. Thus, a 60-day U. prolifera exposure experiment was conducted. The results showed that the contents of Na, K, Mg, and Fe elements in the U. prolifera degradation water were significantly increased. The specific growth rate and survival rate of flounder were significantly decreased under the U. prolifera degradation condition, while the 2101 and 2103 flounder families showed a better growth performance compared with the positive control (PC) group. Moreover, the results showed that activities of total antioxidant capacity (T-AOC), transaminases, and alkaline phosphatase (AKP) in serum were significantly decreased, while the 2103 flounder family showed higher activities. Furthermore, U. prolifera degradation significantly increased superoxide dismutase (SOD) activity and glutathione (GSH) content while decreasing catalase (CAT) activity and malondialdehyde (MDA) content in the liver. Specifically, SOD and CAT activities of the 2103 flounder family were higher than the 2101 flounder family and PC group. In addition, the gill SOD and CAT activities of the 2103 flounder family were significantly higher than the PC group. Similarly, the antioxidant-related gene (sod and cat) expressions were synchronously upregulated or downregulated in the liver and gills in response to U. prolifera degradation. These results revealed that U. prolifera degradation decreased the growth performance and influenced the antioxidant capacity of Japanese flounder, while the 2103 flounder family had better advantages in the U. prolifera degradation condition. Therefore, the 2103 flounder family could be regarded as the potential flounder family tolerating U. prolifera degradation. The increased Fe content in the U. prolifera degradation water may be one of the main causes of the physiological alterations observed in Japanese flounder.
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来源期刊
Fishes
Fishes Multiple-
CiteScore
1.90
自引率
8.70%
发文量
311
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