The freshwater center of the Chinese Academy of Fishery Sciences has made new progress in the response of Macrobrachium rosenbergii to different levels of hypotonic stress
By: Date: 2022-07-19 Categories: foodtechnology Tags: ,
Recently, the national shrimp and crab industry technology system freshwater shrimp nutrition demand and feed position, the innovation team of the Chinese Academy of Fishery Sciences and the”innovation team of nutrition and feed for bulk aquaculture animals” of the Freshwater Fisheries Research Center have made new progress in the research on the response of Macrobrachium rosenbergii larvae to different levels of hypotonic stress.
 
Macrobrachium rosenbergii is an important freshwater shrimp species in China, but in the process of industrial development, the problem of high salinity requirements at different breeding stages leads to the discharge of seedling tail water, which is very easy to cause water pollution.
 
Aiming at the problem of high salinity requirements at the seedling stage of Macrobrachium rosenbergii, the team studied the effects of different low salt stress levels on Macrobrachium rosenbergii larvae. The study found that all low salt stress groups would affect the antioxidant capacity of Macrobrachium rosenbergii larvae and induce oxidative damage. Further microbial and transcriptome analysis showed that low salt stress significantly changed the microbial composition and diversity of Macrobrachium rosenbergii larvae, and adversely affected the immune system of larvae. Pearson correlation analysis showed that there were interactions among antioxidant parameters, microorganisms and differentially expressed genes. The research results provide important theoretical support for the low salinity breeding of Macrobrachium rosenbergii, and have important academic and application value.
 
Related research achievement paper”response of microbiota and immune function to different hypotoNIC stress levels in giant fresh water prawn Macrobrachium rosenbergii post larvae”was published in science of the total environment (if=10.753). Liu Bo, a doctoral candidate at Wuxi Fisheries College of Nanjing Agricultural University, was the first author, and Liu Bo, a researcher at freshwater center, was the corresponding author. Full text links https://doi.org/10.1016/j.scitotenv.2022.157258
 
The research work was supported by the national key R & D Program (2019yfd09000200), the national shrimp and crab industry technology system (cars-48), and the scientific and technological innovation team of the Academy of Water Sciences (2020td59).
 
(contributed by aquatic disease and feed Research Office)