Effects of food, salinity, and ammonia-nitrogen on the physiology of juvenile seahorse (Hippocampus erectus) in two typical culture models in China
文献类型：期刊论文
| 作者 | Huang, Jiaxin4; Qin, Geng1; Zhang, Bo1,2; Tan, Shuwen; Sun, Jinhui4; Lin, Qiang1,2 |
| 刊名 | AQUACULTURE
 |
| 出版日期 | 2020 |
| 卷号 | 520页码:734965 |
| 关键词 | Juvenile seahorse Diet Salinity Ammonia-nitrogen |
| ISSN号 | 0044-8486 |
| DOI | 10.1016/j.aquaculture.2020.734965 |
| 英文摘要 | Food and water environments are key factors affecting juvenile survival rate in seahorse aquaculture. In order to adjust to local conditions, different seahorse (Hippocampus erectus) breeding models were developed in North and South China. Seahorses in North China were commonly fed Anemia in indoor containers with a stable water environment, while most seahorses in South China were fed copepods in outdoor concrete ponds. Firstly, we compared the effect of food type on juvenile seahorses based on a one-month feeding experiment and found no significant difference in body length. However, the insulin-like growth factor 1 (IGF-1) gene expression was significantly higher in the liver of seahorses fed copepods than in the lever of seahorses fed Anemia, suggesting that copepods promoted better growth. A high expression of stress-related genes, namely, heat shock proteins 70 (HSP70) and Mn superoxide dismutase (Mn-SOD), in the liver of the seahorses that were fed copepods suggested that copepods might cause more stress on juveniles. Lower leptin gene expression in the liver of seahorses fed Anemia than in those fed copepods proved that Anemia was better for satiating the juveniles. Furthermore, the potential effects of salinity (15 and 30 ppt) and ammonia-nitrogen (0, 5, and 15 mg/L) on juvenile seahorse physiological stress were studied through a 5-d orthogonal experiment. Both lower salinity and higher ammonia-nitrogen increased the ventilation rate significantly. Low salinity caused a rapid increase in the ventilation rate on day 1, while high ammonia-nitrogen was the main factor during the later period (days 2-5). Significant changes in the mRNA expression of genes, including Na+: K+:2Cl(-) cotransporter 1 (NKCC1) and Na, K-ATPase (NKA) in the gill, HSP70, Mn-SOD, glutamate dehydrogenase (GDH), and glutamyl synthase (GS) in the liver, indicated that seahorses are sensitive to acute salinity decline. In addition, high ammonia-nitrogen exposure significantly changed the expression of genes (i.e., Mn-SOD, GDH, and GS) in seahorses exposed to low salinity level, while no significant variation was observed in seahorses exposed to normal salinity, suggesting that salinity decline might increase the negative effects of ammonia-nitrogen stress. The present study provides a better understanding of how food, salinity, and ammonia-nitrogen affect juvenile seahorses, and will be potentially important to improve animal welfare and increase production efficiency. |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41825013, 41890853]; National Key Research and Development Program 'Biological Habitat Repair Project' [2016YFC1403003]; Key Research Program of Frontier Sciences of CAS [ZDBS-LY-DQC004]; Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences [ISEE2018PY03] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41825013, 41890853]; National Key Research and Development Program 'Biological Habitat Repair Project' [2016YFC1403003]; Key Research Program of Frontier Sciences of CAS [ZDBS-LY-DQC004]; Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences [ISEE2018PY03] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18450]  |
| 专题 | 南海海洋研究所_中科院海洋生物资源可持续利用重点实验室 |
| 作者单位 | 1.Tianjin Agr Univ, Tianjin 300384, Peoples R China 2.Chinese Acad Sci, Inst South China Sea Ecol & Environm Engn, Guangzhou 510275, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510275, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Jiaxin,Qin, Geng,Zhang, Bo,et al. Effects of food, salinity, and ammonia-nitrogen on the physiology of juvenile seahorse (Hippocampus erectus) in two typical culture models in China[J]. AQUACULTURE,2020,520:734965. |
| APA | Huang, Jiaxin,Qin, Geng,Zhang, Bo,Tan, Shuwen,Sun, Jinhui,&Lin, Qiang.(2020).Effects of food, salinity, and ammonia-nitrogen on the physiology of juvenile seahorse (Hippocampus erectus) in two typical culture models in China.AQUACULTURE,520,734965. |
| MLA | Huang, Jiaxin,et al."Effects of food, salinity, and ammonia-nitrogen on the physiology of juvenile seahorse (Hippocampus erectus) in two typical culture models in China".AQUACULTURE 520(2020):734965. |
入库方式： OAI收割
来源：南海海洋研究所
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