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Dietary sanguinarine supplementation recovers the decrease in muscle quality and nutrient composition induced by high-fat diets of grass carp(Ctenopharyngodon idella)

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Animal Nutrition 2024年第2期17卷 208-219页

作者： Yong Shi Lei Zhong Yuanxiang Liu Shude Xu Jihong Dai Yaozhengtai Zhang Yi Hu fisheries College Hunan Agricultural University Hunan Engineering Research Center for utilization of Characteristics of Aquatic resources Hunan Agricultural University key laboratory of Breeding Biotechnology and sustainable Aquaculture Institute of Hydrobiology Chinese Academy of Sciences

The intake of high-fat diets(HFD) has been shown to diminish the muscle quality of aquatic ***, as an excellent additive, exhibits the capability to reduce fat deposition and alleviate inflammation. However, its role in the muscle quality reduction caused by HFD remains unclear. An eight-week trial was conducted to investigate the impacts of dietary supplementation of sanguinarine at1200 μg/kg(HFDS; crude fat = 10%) on the muscle quality of grass carp(Ctenopharyngodon idellus) in comparison to a basic diet(CON, crude fat = 5%). Each group had 3 replicates, with 40 fish per *** experiment employed one-way ANOVA and Duncan's multiple comparisons of the means. The results showed that the HFD exhibited lower growth performance, reduced protein deposition, myofiber diameter, and muscle hardness, coupled with higher levels of fat deposition and inflammation when compared with the CON. However, HFDS improved growth performance(P < 0.05), fat metabolism(ppara( P = 0.001), lpl(P < 0.001), atgl(P < 0.001), and cpt1(P = 0.001) expression exhibited a significant elevation), protein deposition(the protein and m RNA levels of AKT(P = 0.004), PI3K(P = 0.027),TOR(P = 0.005), and P70S6K(P = 0.007) demonstrated a marked increase), myofiber diameter, muscle hardness, and the total content of eicosapentaenoic acid and docosahexaenoic acid. Furthermore, the HFDS reduced oxidative damage caused by fat deposition by significantly downregulating nf-κb(P <0.001), il-1β(P < 0.001), il-6(P < 0.001), il-8(P = 0.003), and tnf-a(P < 0.001) expression and markedly upregulated nrf2(P < 0.001), gpx4(P < 0.001), cat(P < 0.001), sod(P < 0.001), and gr(P = 0.003)expression. The findings from this study suggest that sanguinarine has the potential to alleviate the adverse effects of HFD on growth and muscle quality, providing a theoretical foundation for its practical implementation.

关键词： Plant extract Muscle feature Myofiber characteristics Muscular texture Protein metabolism

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Parent-offspring relationship recognition based on SSR and mtDNA confirmed resource supplement effect of Fenneropenaeus chinensis release

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Acta Oceanologica Sinica 2024年第2期43卷 156-160页

作者： Song Sun Ding Lyu Xianshi Jin Xiujuan Shan Weiji Wang key laboratory of sustainable Development of marine fisheries Ministry of Agriculture and Rural AffairsYellow Sea Fisheries Research InstituteChinese Academy of Fishery SciencesQingdao 266071China Function laboratory for marine fisheries Science and Food Production Processes Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

The resource of Fenneropenaeus chinensis has declined sharply due to excessive fishing intensity,ecological changes and *** order to supplement the fishing yield and restore resources of ***,the relevant authorities have carried out the activities of stock enhancement and *** can increase biomass and recover ***,compared with increasing biomass,there were still few reports on its effect on the recovery of *** recovery is a process related to whether the released individuals can form a reproductive *** to now,there has been a lack of evidence whether the released *** can complete the entire life history,and form reproduction *** this study,gravid female shrimp after spawning migration were captured from coastal waters of Haiyang,Qingdao,and Yellow *** identifying parentage relationships using simple sequence repeat(SSR)and mtDNA haplotype,it was finally confirmed that there were eight released individuals in the recapture *** was confirmed for the first time that at least part of the released *** can complete overwintering and reproductive migration,and maintain the migration habits as their wild ***,we infered that the released shrimp can reproduce under natural conditions,these *** can form reproductive populations theoretically if without human *** results indicated that enhancenment and release activities have a positive effect on resource recovery.

关键词： Fenneropenaeus chinensis release simple sequence repeat(SSR) mtDNA resource supplement

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Flow Field Characteristics of Multi-Trophic Artificial Reef Based on Computation Fluid Dynamics

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Journal of Ocean University of China 2024年第2期23卷 317-327页

作者： HUANG Junlin LI Jiao LI Yan GONG Pihai GUAN Changtao XIA Xu School of Engineering Ocean University of ChinaQingdao 266100China Yellow Sea fisheries Research Institute Chinese Academy of Fishery SciencesKey Laboratory of Sustainable Development of Marine FisheriesMinistry of Agriculture and Rural AffairsQingdao Key Laboratory for Marine Fish Breeding and BiotechnologyQingdao 266071China laboratory for marine fisheries Science and Food Production Processes Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266071China

On the basis of computational fluid dynamics,the flow field characteristics of multi-trophic artificial reefs,including the flow field distribution features of a single reef under three different velocities and the effect of spacing between reefs on flow scale and the flow state,were *** indicate upwelling,slow flow,and eddy around a single *** velocity,height,and volume of upwelling in front of a single reef were positively correlated with inflow *** length and volume of slow flow increased with the increase in inflow *** were present both inside and backward,and vorticity was positively correlated with inflow *** between reefs had a minor influence on the maximum velocity and height of *** the increase in space from 0.5 L to 1.5 L(L is the reef lehgth),the length of slow flow in the front and back of the combined reefs increased *** the space was 2.0 L,the length of the slow flow *** four different spaces,eddies were present inside and at the back of each *** maximum vorticity was negatively correlated with space from 0.5 L to 1.5 L,but under 2.0 L space,the maximum vorticity was close to the vorticity of a single reef under the same inflow velocity.

关键词： artificial reef flow field characteristics computation fluid dynamics multi-trophic structure

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Metabolomic-based analysis reveals bile acid-mediated ovarian failure induced by low temperature in zebrafish

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Zoological Research 2024年第4期45卷 791-804页

作者： Wen-Hao Li Zhi-Qiang Li Meng-Di Bu Jia-Zhen Li Liang-Biao Chen key laboratory of Exploration and utilization of Aquatic Genetic resources Ministry of EducationCollege of Fisheries and Life SciencesShanghai Ocean UniversityShanghai 201306China laboratory for marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdaoShandong 266237China International Research Center for marine Biosciences Ministry of Science and TechnologyCollege of Fisheries and Life SciencesShanghai Ocean UniversityShanghai 201306China

As ectotherms, fish are highly sensitive to temperature fluctuations, which can profoundly impact their reproductive cycles. In this study, we investigated the fertility and histological characteristics of zebrafish(Danio rerio) ovaries exposed to a temperature gradient ranging from the thermopreferendum temperature of the species,27℃, to lower temperatures of 22℃, 20℃, and 13℃ over a period of two weeks. Comparative metabolomic(six biological replicates for each temperature) and transcriptomic(four biological replicates for each temperature) analyses were conducted under the four temperature conditions. Results indicated that lower temperatures inhibited oocyte development and differential metabolites were involved in steroid hormone production,antioxidant function, and lipid and protein *** reproductive hormones, increased proteolysis,and lipid degradation significantly impeded oocyte development and egg maturation. Notably, a significant increase in bile acid content was noted in the ovaries of the cold-treated fish, indicating that bile acids play a critical role in ovarian failure. Overall, these findings provide valuable insights into the mechanisms governing the reproductive response of fish to cold stress.

关键词： old stress Ovarian failure Metabolome Zebrafish

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Effects of Poria cocos polysaccharide on growth performance,physiological parameters,and lipid metabolism of spotted sea bass Lateolabrax maculatus

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Journal of Oceanology and Limnology 2024年第1期42卷 316-331页

作者： Jing LU Zhangfan HUANG Youling YE Anle XU Zhongbao LI fisheries College Jimei UniversityXiamen 361021China Fujian Provincial key laboratory of marine Fishery resources and Eco-environment Xiamen 361021China

The aquaculture industry has developed significantly over the past few decades and has had a substantial impact on the global food supply and marine fisheries ***,some problems arise behind the scenes due to excessive intensive farming,such as slow animal growth,frequent disease,and lipid metabolism *** problems have limited the sustainable development of the aquaculture industry,and a continuable solution is *** use of fungal polysaccharide appears to provide a solution to these ***,different supplemented levels of Poria cocos polysaccharide(PCP)(0,0.4,0.8,1.2,1.6,and 2.0 g/kg,respectively)were fed to spotted sea bass(Lateolabrax maculatus)in similar size(30.28±0.18 g)in current *** effects of PCP on growth,physiological parameters,and lipid metabolism of spotted sea bass were investigated after a 4-week rearing *** showed,fish with PCP intake presented a significantly higher weight gain,specific growth rate,and a significantly lower feed conversion *** higher trypsin activity in liver and intestine were observed in fish with PCP *** superoxide dismutase activity in serum and liver of fish with PCP intake were significantly improved,while significantly higher serum total antioxidant capacity and hepatic catalase activity were also ***,no significant differences in lysozyme and alkaline phosphatase activity were evident among *** with PCP intake showed a significantly lower total cholesterol,but no noteworthy change in triglyceride and lipid-metabolismrelated genes expression were observed among *** indicated that intake of PCP has a positive effect on growth and antioxidant capacity of spotted sea bass,but seems to have a limited effect on the non-specific immunity and lipid metabolism of spotted sea *** on the regression analysis results,1.4 g/kg of PCP is the optimal dose for spotted sea bass in size(30.28±0.18 g).

关键词： spotted sea bass Poria cocos polysaccharide growth lipid metabolism

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Supplementation of alanine improves biomass accumulation and lipid production of Chlorella pyrenoidosa by increasing the respiratory and metabolic processes

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Journal of Oceanology and Limnology 2024年第2期42卷 570-579页

作者： Yongfu LI Tianze ZHAO Wei SUN Ruiwen GAO Guangyuan MA Jiangsu Province Engineering Research Center for marine Bioresources sustainable utilization Key Laboratory of Marine Hazards ForecastingMinistry of Natural ResourcesHohai UniversityNanjing 210098China College of Oceanography Hohai UniversityNanjing 210098China Jiangsu Innovation Center of marine Bioresources Jiangsu Coast Development Group Co.Ltd.Nanjing 210019China

The function of exogenous alanine(Ala)in regulating biomass accumulation,lipid production,photosynthesis,and respiration in Chlorella pyrenoidosa was *** shows that the supplementation of Ala increased *** biomass and lipid production in an 8-d batch *** concentration of 10 mmol/L of Ala was optimum and increased the microalgal cell biomass and lipid content by 39.3%and 21.4%,respectively,compared with that in the control(0-mmol/L Ala).Ala supplementation reduced photosynthetic activity while boosting respiratory activity and pyruvate levels,indicating that *** used exogenous Ala for biomass accumulation through the respiratory metabolic *** accelerated respiratory metabolism due to Ala supplementation elevated the substrate pool and improved the lipogenic gene expression,promoting lipid production at *** study provided a novel method for increasing biomass accumulation and lipid production and elucidated the role of Ala in regulating lipid production.

关键词： alanine Chlorella pyrenoidosa lipid respiration lipogenic gene

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Decoding the fish genome opens a new era in important trait research and molecular breeding in China

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Science China(Life Sciences) 2024年第10期67卷 2064-2083页

作者： Qian Zhou Jialin Wang Jiongtang Li Zhangfan Chen Na Wang Ming Li Lei Wang Yufeng Si Sheng Lu Zhongkai Cui Xuhui Liu Songlin Chen State key laboratory of Mariculture Biobreeding and sustainable Goods Yellow Sea Fisheries Research InstituteChinese Academy of Fishery SciencesQingdaoShandong 266071China laboratory for marine fisheries Science and Food Production Processes Qingdao Marine Science and Technology CenterQingdaoShandong 266237China key laboratory of Aquatic Genomics Ministry of Agriculture and Rural AffairsBeijing Key Laboratory of Fishery BiotechnologyChinese Academy of Fishery SciencesBeijing 100041China

Aquaculture represents the fastest-growing global food production sector,as it has become an essential component of the global food *** has the world's largest aquaculture industry in terms of production ***,the sustainable development of fish culture is hindered by several concerns,including germplasm degradation and disease *** practice of genomic breeding,which relies heavily on genome information and genotypephenotype relationships,has significant potential for increasing the efficiency of aquaculture *** 2014,the completion of the genome sequencing and annotation of the Chinese tongue sole signified the beginning of the fish genomics era in *** then,domestic researchers have made dramatic progress in functional genomic *** date,the genomes of more than 60 species of fish in China have been assembled and *** on these reference genomes,evolutionary,comparative,and functional genomic studies have revolutionized our understanding of a wide range of biologically and economically important traits of fishes,including growth and development,sex determination,disease resistance,metamorphosis,and ***,genomic tools and breeding techniques such as SNP arrays,genomic selection,and genome editing have greatly accelerated genetic improvement through the incorporation of functional genomic information into breeding *** review aims to summarize the current status,advances,and perspectives of the genome resources,genomic study of important traits,and genomic breeding techniques of fish in *** review will provide aquaculture researchers,fish breeders,and farmers with updated information concerning fish genomic research and breeding *** summary will help to promote the genetic improvement of production traits and thus will support the sustainable development of fish aquaculture.

关键词： fish genomics economic traits genomic selection genome editing genomic breeding

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Summer gregarine infection in Antarctic krill Euphausia superba in the Dumont D’Urville Sea,East Antarctic

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Journal of Oceanology and Limnology 2024年第5期42卷 1651-1658页

作者： Yi XIONG Sijie ZHAO Guoping ZHU College of marine Living Resource Sciences and Management Shanghai Ocean UniversityShanghai 201306China Center for Polar Research Shanghai Ocean UniversityShanghai 201306China Polar marine Ecosystem Group the Key Laboratory of Sustainable Exploitation of Oceanic Fisheries ResourcesMinistry of EducationShanghai 201306China National Engineering Research Center for Oceanic fisheries Shanghai 201306China

Antarctic krill Euphausia superba plays a key role in the Antarctic food *** trophic linkage between krill and other macro-organisms has been studied in the past decades,but the variability of parasites in krill is less studied and remains poorly ***,it is important to understand the factors that influence abundance and infection of parasites in ***,the relationship between the infection intensity of parasite and krill diet needs to be clarified,which is helpful for understanding the role of parasite in the food *** investigated the abundance of the highly prevalent gregarine parasites in the digestive tract of krill and the factors influencing the gregarine infection to krill in the East *** infection rate of Cephaloidophora pacifica Avdeev,1985 to krill(n=50 individuals)was 94%.The results of generalized linear model show the infection intensity of *** to the host was related significantly to the station,krill size,and maturity stage,but not the food species and abundance in the stomach of *** of *** in krill differed among stations,and the lowest abundance occurred in the station nearest to the *** abundance varied among sexual maturity stages of krill and increased with krill size.

关键词： Cephaloidophora pacifica Euphausiids parasite diet dinoflagellate

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Numerical Investigation on the Harbour Resonance Inside A Harbour with Lateral Cavities

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China Ocean Engineering 2024年第05期38卷 838-844页

作者： YU Yue-min HUANG Xiao-hua School of marine Science and Engineering Hainan University key laboratory for sustainable utilization of Open-Sea Fishery Ministry of Agriculture and Rural Affairs South China Sea fisheries Research Institute Chinese Academy of Fishery Sciences

Wave-induced harbour resonance is numerically investigated inside a harbour with lateral cavities. The theoretical solutions for the amplification parameter are compared with the simulated results under varying dimensionless wave numbers in order to verify the simulation model in a rectangular harbour at a constant depth. The results indicate that the numerical model can correctly calculate the natural frequency and the natural wave height. A range of calculations are performed for harbour resonance with one pair of lateral cavities, two pairs of lateral cavities and three pairs of lateral cavities, respectively. The simulated results indicate that the amplitude of the amplification parameter decreases both at the primary natural oscillation and the secondary natural oscillation, as the number of lateral cavities increases. The dimensionless wave number reduces as the number of lateral cavities increases both at the primary natural oscillation and the secondary natural oscillation as well.

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Summer gregarine infection in Antarctic krill Euphausia superba in the Dumont D'Urville Sea, East Antarctic

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Journal of Oceanology and Limnology 2024年第05期 1651-1658页

作者： Yi XIONG Sijie ZHAO Guoping ZHU College of marine Living Resource Sciences and Management Shanghai Ocean University Center for Polar Research Shanghai Ocean University Polar marine Ecosystem Group the Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources Ministry of Education National Engineering Research Center for Oceanic fisheries

Antarctic krill Euphausia superba plays a key role in the Antarctic food web. The trophic linkage between krill and other macro-organisms has been studied in the past decades, but the variability of parasites in krill is less studied and remains poorly understood. Therefore, it is important to understand the factors that influence abundance and infection of parasites in krill. Moreover, the relationship between the infection intensity of parasite and krill diet needs to be clarified, which is helpful for understanding the role of parasite in the food web. We investigated the abundance of the highly prevalent gregarine parasites in the digestive tract of krill and the factors influencing the gregarine infection to krill in the East Antarctic. The infection rate of Cephaloidophora pacifica Avdeev, 1985 to krill(n=50 individuals) was 94%. The results of generalized linear model show the infection intensity of C. pacifica to the host was related significantly to the station, krill size, and maturity stage, but not the food species and abundance in the stomach of krill. Abundance of C. pacifica in krill differed among stations, and the lowest abundance occurred in the station nearest to the coast. Gregarines abundance varied among sexual maturity stages of krill and increased with krill size.

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