Rhodobacter azotoformans supplementation improves defense ability of Chinese mitten crab Eriocheir sinensis against citrobacteriosis

被引：8
作者：
Cao, Haipeng [1 ,2 ]
Zhang, Shumeng [2 ]
An, Jian [3 ]
Diao, Jing [4 ]
Xu, La [4 ]
Gai, Chunlei [4 ]
机构：
[1] Shanghai Ocean Univ, Natl Pathogen Collect Ctr Aquat Anim, Shanghai 201306, Peoples R China
[2] Shanghai Ocean Univ, Shanghai Engn Res Ctr Aquaculture, Shanghai 201306, Peoples R China
[3] Marine & Fisheries Dev Promot Ctr Lianyungang City, Lianyungang 266104, Jiangsu, Peoples R China
[4] Marine Sci Res Inst Shandong Prov, Shandong Key Lab Dis Control Mariculture, Qingdao 266104, Peoples R China
来源：
FISH & SHELLFISH IMMUNOLOGY | 2022年 / 131卷
关键词：
Rhodobacter azotoformans; Eriocheir sinensis; Citrobacteriosis; Protective effects; SHRIMP LITOPENAEUS-VANNAMEI; IMMUNE-RELATED GENES; GROWTH-PERFORMANCE; DISEASE RESISTANCE; GUT MICROBIOTA; DIETARY SUPPLEMENTATION; OXIDATIVE DAMAGE; RESPONSES; BACTERIA; HEPATOPANCREAS;
D O I：
10.1016/j.fsi.2022.11.012
中图分类号：
S9 [水产、渔业];
学科分类号：
0908 ;
摘要：
Rhodobacter probiotics are considered as good alternatives to antibiotics for aquaculture. Yet the beneficial ef-fects of Rhodobacter on Chinese mitten crab Eriocheir sinensis are still unclear, and more functions of Rhodobacter supplementation need to be clarified. In this study, a 60-day feeding trial was performed to investigate the protective effects of R. azotoformans against citrobacteriosis in E. sinensis by growth performance, serum im-munity, hepatopancreatic antioxidant capability, intestinal flora, and resistance to Citrobacter freundii challenge assays. The results showed that R. azotoformans supplementation significantly and dose-dependently increased weight gain and specific growth rate as well as activities of serum immune and hepatopancreatic antioxidant enzymes, leading to notable improvement in the growth performance, serum immunity and hepatopancreatic antioxidant status of E. sinensis. Besides, R. azotoformans supplementation significantly enhanced intestinal mi-crobial abundance and diversity in E. sinensis, and conferred significant protection of the crabs against C. freundii challenge with seven-day survival rates of 70.0%-100.0%. To the best of our knowledge, this is the first study to reveal the protective effects of R. azotoformans against citrobacteriosis in E. sinensis.
引用
收藏
页码：991 / 998
页数：8
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