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Biochemical responses of the freshwater microalga Dictyosphaerium sp. upon exposure to three sulfonamides

Journal of environmental Sciences 2020年第11期32卷 141-148页

作者： Shan Chen Jiayuan Li Wenbo Feng Mingzhe Yuan Wei Zhang Houtao Xu Xiaoyan Zheng Liqing Wang centre for research on environmental ecology and fish Nutrient of the ministry of agriculture Key Laboratory of Exploration and Utilization of Aquatic Genetic ResourcesMinistry of EducationShanghai Ocean UniversityShanghai 201306China School of agriculture and Biology Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Aquatic environmental Engineering Co. LtdShanghai 200090China

Sulfonamides(SAs)are common antimicrobial drugs,which are frequently detected in surface water systems,and are difficult to degrade,posing a potential threat to the aquatic ***,little is known about the potential adverse effects of SAs on nontarget organisms(e.g.,microalgae)in the aquatic *** this study,the effect of SAs(sulfadiazine(SD),sulfamerazine(SM1),and sulfamethazine(SM2)at 1,5,20,and 50 mg/L concentrations,respectively)on the freshwater microalga Dictyosphaerium *** investigated,with respect to changes of biomass and chlorophyll a content and induction of extracellular polymer substances(EPS),including protein and polysaccharide *** the same time,the residue of SAs was *** results showed that Dictyosphaerium *** tolerant to the three SAs,and the chlorophyll a content in Dictyosphaerium *** decreased on day 7,followed by a"compensation phenomena".The increase in protein and polysaccharide contents played a defensive role in Dictyosphaerium *** antibiotic stress,and there was a strong positive correlation between polysaccharide contents and antibiotic *** *** 35%–45%,30%–42%,and 26%–51%removal of SD,SM1,and SM2,*** study is helpful to understand the changes of EPS in the defense process of microalgae under the action of antibiotics,and provides a new insight for the ecological removal of antibiotic pollution in natural surface water system.

关键词： Sulfonamides Dictyosphaerium Tolerance Polysaccharide Removal

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Effects of dietary vitamin K_(3) levels on growth,coagulation,calcium content,and antioxidant capacity in largemouth bass,Micropterus salmoides

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Aquaculture and fisheries 2023年第2期8卷 159-165页

作者： Xiang Wei Ying Hang Xiang Li Xueming Hua Xiangming Cong Wanting Yi Xu Guo centre for research on environmental ecology and fish nutrition(CREEFN)of the ministry of agriculture Shanghai Ocean UniversityShanghai201306China Key Laboratory of Freshwater Aquatic Genetic Resources Ministry of AgricultureShanghai Ocean UniversityShanghai201306China National Demonstration Center for Experimental fisheries Science Education Shanghai Ocean UniversityShanghai201306China

An 8-week feeding trial investigated the optimum dietary vitamin K3 requirements of largemouth bass.A total of 600 healthy fish(12.96±0.07 g)were fed diets containing varying levels of vitamin K3 at 0.78(K0),5.80(K5),10.82(K10),15.84(K15),and 20.85(K20)mg/kg with four replicates per *** showed that dietary vitamin K3 enhanced growth,with weight gain rate and specific growth rate in K15 trials significantly higher than K0 trials(P0.05).However,the supplementation of vitamin K3 significantly contributed to calcium accumulation in muscle tissues and vertebrae(P0.05).The antioxidant capacity was improved with the addition of vitamin K3,which was inconsistent with the changes in malondialdehyde and MK-4(a form of menaquinone)within liver and serum,suggesting that the toxicity of excessive artificial vitamin K3 may account for this *** regression analysis,the appropriate dietary vitamin K3 levels within a largemouth bass diet was determined to be in the range of 9.93-15.22 mg/kg,which will provide a reference for the preparation of vitamin premix and artificial diet for largemouth bass.

关键词： Growth Blood coagulation Antioxidant capacity Largemouth bass Vitamin K3

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Effects of Dielectric Barrier Discharge Plasma Treatment on Pentachlorophenol Removal of Granular Activated Carbon

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Plasma Science and Technology 2013年第10期15卷 1059-1065页

作者： JI Puhui QU Guangzhou LI Jie College of Resources and Environment Northwest Agriculture and Forestry UniversityYangling 712100 China Key Laboratory of Plant nutrition and the Agri-environment in Northwest China Ministry of Agriculture Yangling 712100 China Key Laboratory of Industrial ecology and environmental Engineering Ministry of Education Dalian 116024 China

The pentachlorophenol （PCP） adsorbed granular activated carbon （GAC） was treated by dielectric barrier discharge （DBD） plasma. The effects of DBD plasma on the structure of GAC and PCP decomposition were analyzed by N2 adsorption, thermogravimetric, scanning electron microscopy （SEM）, X-ray photoelectron spectroscopy （XPS） and gas chromatographymass spectrometry （GC-MS）. The experimental data of adsorption kinetics and thermodynamics of PCP on GAC were fitted with different kinetics and isotherm models, respectively. The results indicate that the types of N2 adsorption isotherm of GAC are not changed by DBD plasma, while the specific surface area and pore volume increase after DBD plasma treatment. It is found that the weight loss of the saturated GAC is the highest, on the contrary, the weight loss of DBD treated GAC is the least because of reduced PCP residue on the GAC. The XPS spectra and SEM image suggest that some PCP on the GAC is removed by DBD plasma, and the surface of GAC treated by DBD plasma presents irregular and heterogeneous morphology. The GC-MS identification of by-products shows that two main dechlorination intermediate products, tetrachlorophenol and trichlorophenol, are distinguished. The fitting results of experimental data of adsorption kinetics and thermodynamics indicate that the pseudo-first-order and pseudo-second order models can be used for the prediction of the kinetics of virgin GAC and DBD treated GAC for PCP adsorption, and the Langmuir isotherm model fits better with the data of adsorption isotherm than the Freundlich isotherm in the adsorption of PCP on virgin GAC and DBD treated GAC.

关键词： granular activated carbon dielectric barrier discharge plasma adsorption pentachlorophenol decomposition

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The digestible phosphorus requirement in practical diet for largemouth bass(Micropterus salmoides)based on growth and feed utilization

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Aquaculture and fisheries 2022年第6期7卷 632-638页

作者： Pu Wang Xiaoqin Li Zhen Xu Dong Ji Ming He JiangYu Dang Xiang-jun Leng National Demonstration Center for Experimental fisheries Science Education Shanghai Ocean UniversityChina centre for research on environmental ecology and fish nutrition(CREEFN)of the ministry of agriculture Shanghai Ocean UniversityChina Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding Shanghai Ocean UniversityChina

The present study was conducted to estimate the optimum requirement of phosphorus in practical diets for largemouth bass(Micropterus salmoides).Six iso-energetic and iso-nitrogenous diets were formulated with the supplementation of monocalcium phosphate(MCP)of 0,5,10,15,20 and 25 g/kg in basal diet containing 350 g/kg fish meal,*** digestible phosphorus of the six diets was measured as 5.7,6.7,7.8,8.7,9.3 and 10.0 g/kg,*** diet was randomly fed to triplicate groups of 25 juvenile fish(initial body weight,16.0±0.2 g)for 60 *** results showed that weight gain increased,and feed conversion ratio decreased with the increase of dietary *** dietary MCP exceeded 15 g/kg(digestible phosphorus of 8.7 g/kg),the WG and FCR were maintained at the similar *** crude ash,phosphorus and calcium contents in whole body,apparent digestibility of phosphorus and protein retention also increased with the increasing phosphorus level in *** phosphorus and calcium levels and plasma phosphorus showed no further increase when dietary MCP reached 20,20 and 10 g/kg with digestible phosphorus of 9.3,9.3 and 7.8 g/kg,***-line analysis indicated that the digestible phosphorus requirement for largemouth bass were 8.9,8.7 and 9.6 g/kg based on weight gain,feed conversion ratio and vertebral phosphorus *** conclusion,the supplementation of MCP in a diet containing 350 g/kg fish meal improved the growth and feed utilization of largemouth bass,and the digestible phosphorus requirement was suggested to be 8.7–8.9 g/kg with MCP supplementation of 15.0–15.8 g/kg.

关键词： Largemouth bass Digestible phosphorus Growth Feed utilization

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The potential of Clostridium autoethanogenum,a new single cell protein,in substituting fish meal in the diet of largemouth bass(Micropterus salmoides):Growth,feed utilization and intestinal histology

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Aquaculture and fisheries 2023年第1期8卷 67-75页

作者： Pinxian Yang Xiaoqin Li Bowen Song Ming He Chaoyi Wu Xiangjun Leng National Demonstration Center for Experimental fisheries Science Education Shanghai Ocean UniversityShanghai 201306China centre for research on environmental ecology and fish nutrition(CREEFN)of the ministry of agriculture Shanghai Ocean UniversityShanghai 201306China Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding Shanghai Ocean UniversityShanghai 201306China

This study investigated the effects of replacing fishmeal with Clostridium autoethanogenum protein(CAP)on growth,feed utilization and intestinal histology of largemouth bass(Micropterus salmoides).The control diet contained 350 g/kg fishmeal,and then dietary fishmeal was decreased to 300 g/kg,250 g/kg,200 g/kg,150 g/kg and 100 g/kg by CAP inclusion,respectively(FM-30,FM-25,FM-20,FM-15,FM-10).The largemouth bass(110.0±1.0 g)were fed one of the six diets for 8 *** groups of FM-30,FM-25 and FM-20 showed the similar weight gain(WG)and feed conversion ratio(FCR)to the control(P>0.05),while the WG of FM-10 group was decreased by 15.9%,and FCR increased by 0.12 when compared to the control(P0.05).In conclusion,CAP could replace 150 g/kg fishmeal in diet(350 g/kg fishmeal)without adverse effects on growth,feed utilization and intestinal histology of largemouth bass.

关键词： Largemouth bass Clostridium autoethanogenum protein Growth performance Feed utilization Intestinal histology

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Full-length transcriptome of anadromous Coilia nasus using single molecule real-time (SMRT) sequencing

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Aquaculture and fisheries 2022年第4期7卷 420-426页

作者： Jinpeng Zhang Shufang Gao Yonghai Shi Yinlong Yan Qigen Liu National Demonstration Center for Experimental fisheries Science Education Shanghai Ocean UniversityShanghai201306China centre for research on environmental ecology and fish nutrition of the ministry of agriculture Shanghai Ocean UniversityShanghai201306China Shanghai fisheries research Institute Shanghai Fisheries Technology Extension StationShanghai200433China

This study was designed to generate the full-length transcriptome of Coilia nasus using single-molecule long read isoform sequencing(SMRT-seq)*** of brains,ovaries,and testes of *** conditioned in both seawater and freshwater except for gut which was only from the fish conditioned in freshwater,were *** the RNAs were pooled together equally for SMRT *** SMRT cell produced 64.18 Gb clean data,including 765,184 circular consensus(CCS)reads and 616,126 full-length non-chimeric(FLNC)***,93,793 non-redundant transcripts were obtained after clustered and *** analysis of the 93,793 non-redundant transcripts predicted 8242 alternative splicing events,a total of 229,825 SSR and 72,037 complete CDS.A total of 8437 lncRNA were identified.84,617 transcripts were annotated in NR,Swissprot,GO,COG,KOG,eggnog,Pfam and KEGG database *** is the first full-length transcriptome of Coilia nasus,including transcripts appeared in the case of seawater,which will facilitate exploration of genetic data and life story of Coilia nasus.

关键词： Coilia nasus SMRT-seq Alternative splicing SSR lncRNA

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Different metabolomic responses of grass carp(Ctenopharyngodon idellus)to dietary tannin and rapeseed meal

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Aquaculture and fisheries 2022年第1期7卷 40-51页

作者： Jingting Yao Ning Liu Ningyu Li Xiang Li Xueming Hua centre for research on environmental ecology and fish nutrition(CREEFN)of the ministry of agriculture Shanghai Ocean UniversityShanghai201306China Key Laboratory of Freshwater Aquatic Genetic Resources Ministry of AgricultureShanghai201306China National Demonstration Center for Experimental fisheries Science Education Shanghai Ocean UniversityShanghai201306China College of Food Science&Technology Shanghai Ocean UniversityShanghai201306China

In order to study the metabolomic responses of rapeseed meal on grass carp and the role that tannin plays in those responses,grass carp were fed four diets for an eight week *** were practical diets:FM diet contained 10%fishmeal without rapeseed meal,RM diet contained 50%rapeseed meal without fishmeal;the other two were semi-purified diets without(T0)or with 1.25%(T1)of supplemental hydrolysable *** tannin content in the RM diet was close to that of *** rate of weight gain for RM was significantly lower than FM,while the feed conversion ratio in the T1 was significantly higher than *** muscle lipid and protein content was significantly lower and glycogen higher in the RM and T1 compared to the other *** percent of muscle-saturated fatty acid(SFA)in the RM and T1 groups was significantly lower than FM and T0 groups,respectively,while the mono-unsaturated fatty acid(MUFA)in the RM group was significantly higher than *** hepatic activities of alanine aminotransferase and aspartate aminotransferase were lower and the hepatic glycogen and malonaldehyde were higher in the T1 and RM than the other *** total serum protein,globulin,and triglycerides were significantly higher in T1 and RM;the alanine aminotransferase in the T1 was significantly higher than T0;and the aspartate aminotransferase in the RM and T0 groups were significantly higher than the other *** a metabolomic assay,29 differential metabolites were identified between T0 and T1,23 metabolites were downregulated,and 6 metabolites were upregulated in T1 compared to ***-two differential metabolites were identified between FM and RM,31 metabolites were downregulated,and 61 metabolites were upregulated in RM compared to *** indicated that lipid utilization and carbohydrate metabolism might be improved,while the protein metabolism was suppressed by rapeseed *** abnormal protein and lipid metabolism may be partly caused by tannin in the rapeseed meal

关键词： Ctenopharyngodon idellus Hydrolysable tannin Rapeseed meal Metabolite Metabolic pathway

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Effect of chicken haemoglobin powder on growth, feed utilization, immunity and haematological index of largemouth bass (Micropterus salmoides)

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Aquaculture and fisheries 2020年第4期5卷 187-192页

作者： Guitao Ding Songlin Li An Wanga Naisong Chen National Demonstration Center for Experimental fisheries Science Education Shanghai Ocean UniversityShanghai201306China research centre of the agriculture ministry on environmental ecology and fish nutrition Shanghai Ocean UniversityShanghai20136China Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding Shanghai Ocean UniversityShanghai201306China

A 12-week feeding trial was conducted to evaluate the effects of replacing fish meal by chicken haemoglobin powder in largemouth bass *** isonitrogenous(48%)and isolipidic(12%)diets were formulated to replace 0%(control),9.80%,19.61%and 29.41%of fish meal with chicken haemoglobin *** diet was fed to triplicate groups of fish(initial weight:49.50±0.07 g)twice *** fish specific growth rate was significantly reduced when diet replacement level was up to 19.61%,which may be related to the feed intake and apparent digestibility coefficient of protein and amino ***,the feed efficiency ratio and protein efficiency ratio were not significantly decreased until the replacement level up to 29.41%.The activity of CCP was significantly reduced when 19.61%of fish meal was ***,the activity of lysozyme and serum protein content was significantly altered in fish fed with the diets up to 29.41%***,the red blood cell count and haemoglobin content was significantly decreased when the replacement level was up to 19.61%.In overall,the diet with 9.80%of chicken haemoglobin powder was more suitable for largemouth bass.

关键词： Chicken haemoglobin meal Growth Feed utilization Non-specific immunity Largemouth bass

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Variation of lipids and fatty acids composition in the tissues of wild devil stinger(Inimicus japonicas)during sexual maturation

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Aquaculture and fisheries 2018年第3期3卷 115-121页

作者： Songlin Li Wen Wen Xu Gong Xuxiong Huang Naisong Chen National Demonstration Center on Experiment Teaching of fisheries Science Shanghai Ocean UniversityShanghai 201306China research centre of the agriculture ministry on environmental ecology and fish nutrition Shanghai Ocean UniversityShanghai 20136China Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding Shanghai Ocean UniversityShanghai 201306China

The present study was conducted to characterize the lipid and fatty acid profiles in different tissues(gonad,liver and muscle)of the wild-caught devil stinger during sexual ***-caught devil stinger were divided into six groups according to gonad development and *** lipid content was up to 40%dry weight in liver and was significantly higher than in other tissues(ovary,testis and muscle)in both male and female stinger during sexual *** maturation,total lipid content in the female stinger liver decreased,but in males significantly increased in all *** proportions of neutral lipids(NL)were observed in the stinger liver,while polar lipids(PL)were mainly quantified in the gonad and muscle of both male and female *** PL content of the ovary significantly decreased with sexual maturation,but NL were significantly *** fatty acids composition of the stinger broodstocks were tissue-and lipid *** the stinger gonad high-unsaturated fatty acids(HUFA),such as ARA,DHA and EPA,are selectively transferred and conserved,indicating the crucial role of these fatty acids during sexual maturation of this fish species.

关键词： Lipids Fatty acids composition Gonad development Devil stinger

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Efficacy of phytogenic extracts on growth performance and health of tilapia (Oreochromis niloticus × O. aureus)

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Aquaculture and fisheries 2022年第4期7卷 411-419页

作者： Lumpan Poolsawat Yifeng Yu Xiaoqin Li Xu Zhen Wenxiang Yao Pu Wang Congyan Luo Xiangjun Leng National Demonstration centre for Experimental fisheries Science Education Shanghai Ocean UniversityShanghai201306China centre for research on environmental ecology and fish nutrition(CREEFN)of the ministry of agriculture Shanghai Ocean UniversityShanghai201306China Shanghai Collaborative Innovation centre for Aquatic Animal Genetics and Breeding Shanghai201306China Zhengchang Feed Science and Technology Co.Ltd. Liyang213300China

The present study was conducted to evaluate the efficacy of phytogenic extract on growth and health of *** experimental diets were designed as the basal diet(Con)and phytogenic extract(Flourishing,F)supplemented diets at 0.5 and 1 g/kg inclusion(F-1 and F-2),which the phytogenic additive was extracted from Eucommia ulmoides,Astragalus membranaceus,Lonicera japonica and Codonopsis *** three diets were fed to juvenile tilapia(14.0±0.1 g)with 30 fish per cage,and three replicate cages from the three groups were placed in one indoor concrete pool(a total of three pools were used).After 8 weeks of feeding,the weight gain was significantly increased,and feed conversion ratio was decreased in F-2 group(P<0.05)when compared to the *** levels of phytogenic extract significantly promoted the retentions of protein and lipid and the apparent digestibility coefficient of dry matter and protein(P<0.05).The activity of superoxide dismutase and the levels of white blood cells,haemoglobin and glutamic pyruvic transaminase were also significantly increased by the supplementation of phytogenic extract(P<0.05).The villus height in anterior intestine was significantly enhanced in F-1 and F-2 groups(P<0.05).After challenging with Aeromonas hydrophila,the cumulative mortality was significantly declined in F-1 and F-2 groups(P<0.05).In summary,the dietary supplementation of phytogenic extract at 1 g/kg feed could provide positive efficiency on growth,nutrient utilization,immunity,gut morphology and disease resistance of tilapia under the present conditions.

关键词： Phytogenic extract Tilapia Growth Immune response Intestinal histology Microbiota

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