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Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Dietary soybean oil aggravates the adverse effects of low salinity on intestinal health in juvenile mud crab Scylla paramamosain
Author(s): Luo, Jiaxiang
Zhang, Yingying
Zhou, Qicun
Betancor, Monica B
Tocher, Douglas R
Lu, Jingjing
Yuan, Ye
Zhu, Tingting
Jiao, Lefei
Wang, Xuexi
Zhao, Mingming
Hu, Xiaoying
Jin, Min
Keywords: Salinity
Lipid source
Intestinal health
Mud crab Scylla paramamosain
Issue Date: 15-Apr-2021
Date Deposited: 19-Feb-2021
Citation: Luo J, Zhang Y, Zhou Q, Betancor MB, Tocher DR, Lu J, Yuan Y, Zhu T, Jiao L, Wang X, Zhao M, Hu X & Jin M (2021) Dietary soybean oil aggravates the adverse effects of low salinity on intestinal health in juvenile mud crab Scylla paramamosain. Ecotoxicology and Environmental Safety, 213, Art. No.: 112004.
Abstract: Salinity is one of the important factors affecting the physiological state of crustaceans in marine environments. Lipid plays major roles in energy supply and is main sources of essential fatty acids for membrane integrity, which is critical in adaptations to changes in salinity. Here we evaluated the effects of salinity (medium, 23 ppt and low, 4 ppt) and dietary lipid source (fish oil, FO and soybean oil, SO) on intestinal health of the marine crustacean mud crab Scylla paramamosain. The results indicated that low salinity and dietary SO (LSO group) significantly affected intestinal histomorphology, with a significant decrease of intestinal fold height and width as well as down-regulation of intestinal mRNA levels of tight junction genes compared to crab reared at medium salinity and fed FO diets (MFO group). Crabs reared at low salinity and fed SO showed an increased inflammatory response in intestine, which stimulated a physiological detoxification response together with apoptosis compared to crab in the MFO group. Low salinity and SO diets also could be responsible for multiply the pathogenic bacteria of Photobacterium and inhibit the beneficial bacteria of Firmicutes and Rhodobacteraceae in intestine, and act on a crucial impact on the development of intestinal microbial barrier disorders. The results of microbial function predictive analysis also support these inferences. The findings of the present study demonstrated that soybean oil as the main dietary lipid source could exacerbate the adverse effects of low salinity on intestinal health of mud crab, and provided evidence suggesting that dietary lipid source and fatty acid composition may play vital roles in intestinal health and the process of adaptation to environmental salinity in marine crustaceans.
DOI Link: 10.1016/j.ecoenv.2021.112004
Rights: This article is available under the Creative Commons CC-BY-NC-ND license ( and permits non-commercial use of the work as published, without adaptation or alteration provided the work is fully attributed. For commercial reuse, permission must be requested.
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