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Integrated biomarker response to assess toxic impacts of iron and manganese on deep-sea mussel Gigantidas platifrons under a deep-sea mining activity scenario

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Journal of Oceanology and Limnology 2024年第2期42卷 522-532页

作者： Li ZHOU Mengna LI zhaoshan zhong Minxiao WANG Hao CHEN Chao LIAN Hao WANG Huan ZHANG Lei CAO Chaolun LI Center of Deep Sea Research Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laoshan Laboratory Qingdao 266237China South China Sea Institute of Oceanology Chinese Academy of SciencesGuangzhou 510301China CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China

Deep-sea mining activities can potentially release metals,which pose a toxicological threat to deep-sea ***,due to the remoteness and inaccessibility of the deep-sea biosphere,there is insufficient knowledge about the impact of metal exposure on its *** this study,deep-sea mussel Gigantidas platifrons,a commonly used deep-sea toxicology model organism,was exposed to manganese(100,1000μg/L)or iron(500,5000μg/L)for 7 d,*** and iron were chosen for their high levels of occurrence within deep-sea *** accumulation and a battery of biochemical biomarkers related to antioxidative stress in superoxide dismutase(SOD),catalase(CAT),malondialdehyde(MDA);immune function in alkaline phosphatase(AKP),acid phosphatase(ACP);and energy metabolism in pyruvate kinase(PK)and hexokinase(HK)were assessed in mussel *** showed that deep-sea mussel *** exhibited a high capacity to accumulate Mn/*** addition,most tested biochemical parameters were altered by metal exposure,demonstrating that metals could induce oxidative stress,suppress the immune system,and affect energy metabolism of deep-sea *** integrated biomarker response(IBR)approach indicated that the exposure to Mn/Fe had a negative impact on deep-sea mussels,and Mn demonstrated a more harmful impact on deep-sea mussels than ***,SOD and CAT biomarkers had the greatest impact on IBR values in Mn treatments,while ACP and HK were most influential for the low-and high-dose Fe groups,*** study represents the first application of the IBR approach to evaluate the toxicity of metals on deep-sea fauna and serves as a crucial framework for risk assessment of deep-sea mining-associated metal exposure.

关键词： mussel metal deep-sea mining biomarker environmental monitoring

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Stabilization of tearing mode by current drive

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核聚变与等离子体物理 2004年第1期24卷 11-14页

作者： WANGzhong-tian SHIMan-li MAOGuo-ping zhaoshan-zhong ZHENGXiao-hu SouthwesternInstituteofPhysics Chengdu610041 UniversityofElectronicScienceandTechnologyofChina Chengdu610054

The major disruption limits the operation of present tokamaks. Experimental evidences point out that the growth of tearing modes or the magnetic islands is primarily responsible for the occurrence. Taking the non-inductive current drive effects into account, a set of 3D nonlinear equation is derived. It is shown from simulation that the growth of the magnetic island is suppressed effectively by RF current drive. It is consistent with recent experiments on the HL-1 tokamak in which the plasma is stabilized by an RF current drive.

关键词：稳定性分裂撕裂模型等离子体诊断磁岛电流驱动

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Gametogenesis and reproductive traits of the cold-seep mussel Gigantidas platifrons in the South China Sea

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Journal of Oceanology and Limnology 2020年第4期38卷 1304-1318页

作者： zhong zhaoshan WANG Minxiao CHEN Hao ZHENG Ping LI Chaolun CODR and KLMEES Institute of OceanologyChinese Academy of Sciences University of Chinese Academy of Sciences Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and Technology Center for Ocean Mega-Science Chinese Academy of Sciences Center for Genomics and Biotechnology Fujian Agriculture and Forestry University

Gigantidas platifrons(Bivalvia,Mytilidae),the dominant species at the Formosa cold seep,relies on methanotrophic symbionts dwelling in its gills for *** reproductive patterns of *** provide fundamental information for understanding the population recruitment of this ***,we know very little about important processes in reproduction,such as gametogenesis and symbiotic bacteria *** this end,we described the developmental patterns of the gonads from nine surveys and juvenile length-distribution from one-year larval traps and detected bacteria in gonad from *** *** results show that *** is a functionally dioecious *** reproduction of *** is discontinuous,with spawning maturity peak around the fourth quarter of the *** seasonal reproduction of *** was further supported by the unimodal shell length distribution of the trapped juvenile *** the small oocyte size(48.99-70.14 μm),which was comparable to that of coastal mussels,we proposed that *** developed via a free-living,planktotrophic larval stage before *** blooms at the water surface can also supply the development of the planktonic larvae of ***,no bacteria were observed in gonads,suggesting a horizontal symbiont transfer mode in this ***,these results provide fundamental biological information for an improved understanding of the early life history of *** in the Formosa cold seep.

关键词： cold seep gametogenesis Gigantidas platifrons reproductive South China Sea(SCS)

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Identification and characterization of endosymbiosis-related immune genes in deep-sea mussels Gigantidas platifrons

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Journal of Oceanology and Limnology 2020年第4期38卷 1292-1303页

作者： LI Mengna CHEN Hao WANG Minxiao zhong zhaoshan ZHOU Li LI Chaolun Center of Deep Sea Research and Key Laboratory of Marine Ecology&Environmental Sciences(CODR and KLMEES) Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China

Deep-sea mussels of the subfamily Bathymodiolinae are common and numerically dominant species widely distributed in cold seeps and hydrothermal *** long-time evolution,deep-sea mussels have evolved to be well adapted to the local environment of cold seeps and hydrothermal vents by various ways,especially by establishing endosymbiosis with chemotrophic ***,biological processes underlying the establishment and maintenance of symbiosis between host mussels and symbionts are largely *** the present study,Gigantidas platifrons genes possibly involved in the symbiosis with methane oxidation symbionts were identified and characterized by Lipopolysaccharide(LPS)pull-down and in situ *** immune related proteins including Toll-like receptor 2(TLR2),integrin,vacuolar sorting protein(VSP),matrix metalloproteinase 1(MMP1),and leucine-rich repeat(LRR-1)were identified by LPS pull-down *** five proteins were all conserved in either molecular sequences or functional domains and known to be key molecules in host immune recognition,phagocytosis,and lysosome-mediated ***,in situ hybridization of LRR-1,TLR2 and VSP genes was conducted to investigate their expression patterns in gill tissues of ***,LRR-1,TLR2,and VSP genes were found expressed exclusively in the bacteriocytes of ***,it was suggested that TLR2,integrin,VSP,MMP1,and LRR-1 might be crucial molecules in the symbiosis between *** and methane oxidation bacteria by participating in symbiosis-related immune processes.

关键词： Gigantidas platifrons endosymbiosis innate immunity pull-down assay immune recognition methane oxidation bacteria

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饲粮类型和日龄对小体型优质肉鸭生长性能、屠宰性能和肉品质的影响

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中国家禽 2022年第4期44卷 58-64页

作者：白蒙董钊绮杨宝龙庄重江勇白皓王志秀宋倩倩王兆山王维田立余陈国宏常国斌扬州大学动物科学与技术学院江苏扬州225009 沭阳众客种禽有限公司江苏宿迁223600 扬州大学农业科技发展研究院教育部农业与农产品安全国际合作联合实验室江苏扬州225009

为比较两种不同饲粮类型和日龄对小体型优质肉鸭生长性能、屠宰性能和肉品质的影响,试验选择3000只小体型优质肉鸭的母鸭,分别饲喂高蛋白高钙磷饲粮(A饲粮)和低蛋白低钙磷饲粮(B饲粮),每周抽样称重,并于42、49和56日龄随机挑选12只母鸭... 详细信息

为比较两种不同饲粮类型和日龄对小体型优质肉鸭生长性能、屠宰性能和肉品质的影响,试验选择3000只小体型优质肉鸭的母鸭,分别饲喂高蛋白高钙磷饲粮(A饲粮)和低蛋白低钙磷饲粮(B饲粮),每周抽样称重,并于42、49和56日龄随机挑选12只母鸭进行屠宰,测定屠宰性能和肉品质。结果显示:35日龄后,平均体重随着日龄增加明显升高(P0.05);胸肌蛋白质含量随日龄增加逐渐增加。综上,在本试验条件下,通过饲喂低蛋白低钙磷饲粮和增加饲养时间可以改善小体型优质肉鸭肉品质。

关键词：小体型优质肉鸭饲粮日龄生长性能屠宰性能肉品质

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广西防城港首次截获苜蓿黄萎病菌

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植物保护 2012年第1期38卷 180-183页

作者：黄胜光卢兆山邱世明奚国华陆道钟恒禄广西防城港出入境检验检疫局 538001

从一批进境的美国苜蓿草样品中保湿分离得到了3株与苜蓿黄萎病菌(Verticillium albo-atrum)相似的目标菌VA1、VA2、VA3。该目标菌在PDA上生长迅速,菌丝生长0.8～1.0mm/d,2～3d即可生成肉眼可见的菌落斑点;菌落为白色圆形,边缘规则呈圆形... 详细信息

从一批进境的美国苜蓿草样品中保湿分离得到了3株与苜蓿黄萎病菌(Verticillium albo-atrum)相似的目标菌VA1、VA2、VA3。该目标菌在PDA上生长迅速,菌丝生长0.8～1.0mm/d,2～3d即可生成肉眼可见的菌落斑点;菌落为白色圆形,边缘规则呈圆形,菌丝较致密,气生菌丝较少,菌落中心乳白色奶冻状;培养4～5d即后产生气生典型轮枝状分生孢子梗,7～8d后菌落中央表面因产生休眠菌丝开始变成黑褐色至黑色,20d后菌落的表面和背面大部分均变黑色,仍不产生微菌核和厚垣孢子。该目标菌的纯培养用***-atrum特异引物Vaa1/Vaa2进行检测,PCR扩增后得到预期330bp的产物片段,产物序列与***-atrum相应序列的相似性为100%。从而鉴定确认该目标菌为苜蓿黄萎病菌***-atrum。

关键词：苜蓿黄萎病菌检疫口岸截获

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不同入路行全髋关节置换术治疗老年股骨颈骨折的临床疗效

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当代医学 2023年第23期29卷 61-63页

作者：廖肇山钟伟建洪忠刘汉民赣州市南康区第一人民医院骨科江西赣州341400

目的探讨不同入路行全髋关节置换术(THR)治疗老年股骨颈骨折(FNF)的临床疗效。方法选取2018年9月至2020年9月于本院治疗的86例老年FNF患者作为研究对象,按照随机数字表法分为外侧入路组与后外侧入路组,各43例。后外侧入路组采用后外侧入... 详细信息

目的探讨不同入路行全髋关节置换术(THR)治疗老年股骨颈骨折(FNF)的临床疗效。方法选取2018年9月至2020年9月于本院治疗的86例老年FNF患者作为研究对象,按照随机数字表法分为外侧入路组与后外侧入路组,各43例。后外侧入路组采用后外侧入路THR治疗,外侧入路组采用外侧入路THR治疗。比较两组手术指标、髋关节功能及并发症发生情况。结果后外侧入路组手术时间及切口长度均短于外侧入路组,差异有统计学意义(P<0.05);两组术中出血量比较差异无统计学意义。术后1个月,后外侧入路组Harris评分高于外侧入路组,差异有统计学意义(P<0.05);术后6个月,两组Harris评分比较差异无统计学意义。两组并发症发生率比较差异无统计学意义。结论后外侧入路THR治疗老年FNF疗效显著,患者早期髋关节功能恢复良好,且切口小、手术耗时短,但远期疗效与外侧入路行THR治疗相当。

关键词：老年股骨颈骨折全髋关节置换术外侧入路后外侧入路髋关节功能并发症

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湘江流域大型底栖动物群落结构及其与环境因子的关系

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水生态学杂志 2018年第2期39卷 48-57页

作者：张琦王方鸣罗岳平黄钟霆黄河仙胡树林陈贝贝刘应迪湖南师范大学生命科学学院长沙410081 湖南省环境监测中心站长沙410001

采用野外调查的方法,结合Shannon多样性指数、Margalef物种丰富度指数、Pielou群落均匀度指数和冗余分析（RDA）,研究了湘江流域底栖动物群落结构、多样性及其与环境因子的关系。结果表明,底栖动物3门、6纲、15目、31科、43种。其中节... 详细信息

采用野外调查的方法,结合Shannon多样性指数、Margalef物种丰富度指数、Pielou群落均匀度指数和冗余分析（RDA）,研究了湘江流域底栖动物群落结构、多样性及其与环境因子的关系。结果表明,底栖动物3门、6纲、15目、31科、43种。其中节肢动物22种,占51.16%;软体动物16种,占37.21%;环节动物5种,占11.63%。底栖动物优势种中的霍甫水丝蚓（Limnodrilus hoffmeisteri）、方格短沟蜷（Semisulcospira cancellata）和椭圆萝卜螺（Radix swinhoei）在流域内的分布具有显著的空间差异性（P﹤0.05）。底栖动物丰度和生物量在秋季最高、冬季最低。底栖动物丰度的空间差异、季节差异均显著（P〈0.05）,生物量的空间差异和季节差异均不显著。底栖动物群落的Shannon-Wienner指数（H＇）、丰富度指数（dM）和均匀度指数（J）的平均值分别为1.5145、2.0635和0.7041;湘江航电枢纽的物种多样性最高,松柏最低。RDA分析表明,重金属Cu和Cr是影响湘江流域底栖动物群落结构的关键因子,其次为石油类、Se、p H、氟化物、CODMn、COD和Zn。从种类水平看,椭圆萝卜螺可以作为湘江重金属Cr的指示物种,霍甫水丝蚓对重金属Zn敏感,格氏短沟蜷（Semisulcospira gredleri）耐受重金属Cu,耐污种类多足摇蚊（Polypedilum sp.）与COD、石油类环境轴呈正相关,前突摇蚊（Procladius sp.）与CODMn环境轴呈正相关;敏感种类扁蜉（Heptageniidae sp.）、带角螺（Angulyagra annulatus）与氟化物、COD呈负相关,四节蜉（Baetidae sp.）、闪蚬（Corbicula nitens）与CODMn呈负相关;不耐重金属类群的日本沼虾（Macrobrachium nipponense）、纹石蛾（Hydropsychidae sp.）与Cu、Cr环境轴呈负相关。

关键词：底栖动物环境因子重金属湘江流域

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