检索结果-南通市图书馆

Trait-based approach revealed the seasonal variation of mesozooplankton functional groups in the South Yellow Sea

Marine Life Science & Technology 2023年第1期5卷 126-140页

作者： Zhishuang Zhang Hongju Chen Yixuan Li Ruping Ge Guangxing Liu Shaukat Ali yunyun zhuang Key Laboratory of Marine Environment and Ecology Ministry of EducationOcean University of ChinaQingdao266100China Marine Ecology and Environmental Science Laboratory Pilot National Laboratory for Marine Science and TechnologyQingdao266200China Department of Environmental Sciences Karakoram International UniversityGilgit15100Pakistan

Functional traits determine the fitness of organisms and mirror their ecological *** trait-based approaches provide ecological insights,it is underexploited for marine zooplankton,particularly with respect to seasonal ***,based on four major functional traits,including body length,feeding type,trophic group,and reproduction mode,we quantified the seasonal variations of mesozooplankton functional groups in the South Yellow Sea(SYS)in the spring,summer,and autumn of *** seasonal dynamics were identified for all traits but patterns varied among *** zooplankton(47.7–88.6%),omnivores–herbivores(81.3–97.6%),and free spawners(54.8–92.5%)dominated in three seasons,while ambush feeders and current feeders dominated in spring(45.7%),and autumn(73.4%),*** analysis of the functional traits showed that the mesozooplankton in the SYS can be classified into eight functional *** biogeographic and seasonal variations of functional groups can be partially explained by environmental *** 1,represented by omnivores–herbivores,was the most dominant functional group,the abundance of which peaked in spring and was positively correlated with chlorophyll a concentration,indicating its close association with phytoplankton *** contribution of giant,active ambush carnivores,passive ambush carnivore jellyfish,current omnivores–detritivores,and parthenogenetic cladocerans increased with sea surface *** proportion of giant,active ambush carnivores and active ambush omnivore–carnivore copepods decreased with salinity in *** study presents a new perspective for understanding the dynamics of zooplankton and paves the way for further research on the functional diversity of zooplankton in the SYS.

关键词： Zooplankton Southern Yellow Sea Functional trait Functional group Seasonal variation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Functional groups and seasonal diversity of crustacean zooplankton in adjacent waters of Haizhou Bay,South Yellow Sea

引用

Journal of Oceanology and Limnology 2023年第3期41卷 1007-1023页

作者： Zeqi ZHENG Shunan FU Yixuan LI Ruping GE Hongju CHEN Zhenjiang YE yunyun zhuang Guangxing LIU Key Laboratory of Marine Environment Ministry of EducationOcean University of ChinaQingdao 266100China Marine Ecology and Environmental Science Laboratory Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Fisheries College Ocean University of ChinaQingdao 266003China

Zooplankton are important linkages in the food web and can respond nonlinearly to environmental *** organisms thrive from spring to ***,it is crucial to understand how ecological functions of zooplankton communities may shift under seasonal environmental changes during this *** were collected from May to August(May,June-Ⅰ,June-Ⅱ,July-Ⅰ,July-Ⅱ,and August)in 2018 in Haizhou Bay,Jiangsu,East China for zooplankton and environmental *** accounted for 75 out of 134 zooplankton taxa and 91.8%of total zooplankton *** average abundance of crustacean varied between 2824.6±635.4 inds./m3 in July-Ⅱand 6502.7±1008.8 inds./m3 in June-Ⅱ.Multivariate analyses results showed that the dissimilarity of community increased gradually in the time *** length,feeding type,trophic group,and reproduction mode were used to investigate crustacean community ***-based functional groups contained species with similar ecological *** diversity fused the differences of species and *** proportion of large-sized species(2-5 mm)decreased with the increasing proportion of medium-sized species(1-2 mm).The proportion of current feeders increased with the drop in the proportion of mixed *** species increased with decreasing free spawners,and omnivores-carnivores increased with decreasing *** additive models suggested that temperature was the main driver of variations in crustacean zooplankton *** identified functional groups varied with increasing ***-herbivorous copepods declined(90.0%-68.0%),whereas the parthenogenetic cladocerans increased(0-24.1%).The small egg-brooding ambush copepods fluctuated(6.5%-9.3%)with increasing water *** other functional groups changed *** diversity also varied according to temperature *** community structure and ecological function of crustacean zooplankton community

关键词： zooplankton trait functional group diversity Yellow Sea Haizhou Bay

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cloning and Analysis of Calmodulin Gene from Porphyra yezoensis Ueda (Bangiales, Rhodophyta)

引用

Journal of Ocean University of China 2009年第3期8卷 247-253页

作者： WANG Mengqiang MAO Yunxiang zhuang yunyun KONG Fanna SUI Zhenghong College of Marine Life Sciences Ocean University of China Qingdao 266003 P. R. China Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 P. R. China Graduate University of Chinese Academy of Sciences Beijing 100039 P. R. China Department of Marine Sciences University of Connecticut Groton CT06340 USA

In order to understand the mechanisms of signal transduction and anti-desiccation mechanisms of Porphyra yezoensis, cDNA and its genomic sequence of Calmodulin gene (CaM) was cloned by the technique of polymerase chain reaction (PCR) based on the analysis of P. yezoensis ESTs from dbEST database. The result shows that the full-length cDNA of CaM consists of 603 bps including an ORF encoding for 151 amino acids and a terminate codon UGA, while the length of genomic sequence is 1231 bps including 2 exons and 1 intron. The average GC content of the coding region is 58.77%, while the GC content of the third position of this gene is as high as 82.23%. Four Ca2+ binding sites (EF-hand) are found in this gene. The predicted molecular mass of the deduced peptide is 16688.72 Da and the pI is 4.222. By aligning with known CaM genes, the similarity of CaM gene sequence with homologous genes in Chlamydomonas incerta and Chlamydomonas reinhardtii is 72.7% and 72.2% respectively, and the similarity of the deduced amino acid sequence of CaM gene with homologous genes in C. incerta and C. reinhardtii are both 71.5%. This is the first report on CaM from a species of Rhodophyta.

关键词： Porphyra yezoensis Calmodulin desiccation sequence analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

In situ diet of the copepod Calanus sinicus in coastal waters of the South Yellow Sea and the Bohai Sea

引用

Acta Oceanologica Sinica 2017年第6期36卷 68-79页

作者： YI Xiaoyan HUANG Yousong zhuang yunyun CHEN Hongju YANG Feifei WANG Weimin XU Donghui LIU Guangxing ZHANG Huan Key Laboratory of Marine Environment and Ecology(Ocean University of China) Ministry of EducationQingdao 266100China College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China Department of Marine Sciences University of ConnecticutGroton 06340USA

Copepods are a key trophic link between primary producers and predatory animals at higher trophic levels in the marine ecosystem. Knowledge of the in situ composition of the copepod diet is critical for the accurate evaluation of trophic relationships and energy transfer in marine food webs. In this study, we applied a PCR-based cloning technique developed previously to investigate the in situ diet of Calanus sinicus, an ecologically important largesized calanoid copepod that dominates in the shelf waters around China, Japan and Korea. Analyses of the 18S rDNA sequences obtained from the copepod diet revealed the diverse food composition of C. sinicus from two stations （Y19 in the South Yellow Sea and B49 in the Bohai Sea）. A total of 43 operational taxonomic units （OTUs） were detected, which belonged to 13 diverse lineages： Bacillariophyta, Dinoflagellata, Dictyochophyceae, Chrysophyta, Katablepharidophyta, Pelagophyceae, Apusozoa, Hydrozoa, Ctenophora, Echinodermata, Tunicata, Chaetognatha and marine fungi. The results indicate that during an algae bloom, C. sinicus can graze on the bloom causative species. When the abundance of phytoplankton in ambient water is relatively low, C. sinicus can choose eggs, larvae, or organic particles/detritus of various metazoans, especially hydrozoans and ctenophores, as alternative food sources. Our result suggests that C. sinicus is an omnivorous species, and its prey choice may depend on the food availability in the ambient waters.

关键词： copepod in situ diet molecular analysis 18S rDNA ciliate blocking primer

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

In Silico Screening for Microsatellite Markers from Expressed Sequence Tags of Porphyra yezoensis (Bangiales, Rhodophyta)

引用

Journal of Ocean University of China 2007年第2期6卷 161-166页

作者： WANG Mengqiang HU Jingjie zhuang yunyun ZHANG Lei LILT Wei MAO Yunxiang College of Marine Life Science Ocean University of China Qingdao 266003 P. R. China

The genomic resources of Porphyra yezoensis expressed sequence tags (ESTs) were utilized to identify simple sequence repeats (SSRs), or microsatellites. This method took the advantage of using ESTs and microsatellites either for the establishment of gene identities or for the acquisition of high polymorphism. The microsatellites can be used as gene markers when microsatellites are tagged to genes. Revealed by bioinformatics analysis, 1 162 out of 21 954 ESTs contained microsatellites and cluster analysis indi- cated that 984 of these ESTs fell into 112 contigs, while the other 178 ESTs were singletons. A total of 290 unique SSR-containing genes were identified. The AAC SSRs were the most populous type of microsatellites. GC-rich microsatellites were predominant among all the microsatellites.

关键词： bioinformatics data mining EST microsatellites Porphyra yezoensis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

关于数字图书馆研究与建设的几个问题

引用

图书情报知识 2003年第1期20卷 23-25页

作者：庄云云浙江师范大学图书馆金华321004

本文对数字图书馆的概念和主要研究内容、数字图书馆的基本形态和服务理念、数字图书馆的基本功能和主要特征以及中国数字图书馆的建设模式和重要作用等。

关键词：基本功能基本形态服务理念数字图书馆建设模式研究

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

条斑紫菜锰超氧化物歧化酶基因克隆与序列分析

引用

高技术通讯 2006年第5期16卷 522-528页

作者：王荣刘涛周晓君庄筠昀茅云翔中国海洋大学海洋生命学院青岛266003

为研究紫菜抗逆抗病的分子机制,以本实验室建立的条斑紫菜表达序列标签（EST）和全长cDNA富集文库,结合PCR技术,克隆了条斑紫菜编码锰超氧化物歧化酶（Mn-SOD）的cDNA及基因组DNA全长序列,并进行了序列特性相关分析.研究结果表明：该基... 详细信息

为研究紫菜抗逆抗病的分子机制,以本实验室建立的条斑紫菜表达序列标签（EST）和全长cDNA富集文库,结合PCR技术,克隆了条斑紫菜编码锰超氧化物歧化酶（Mn-SOD）的cDNA及基因组DNA全长序列,并进行了序列特性相关分析.研究结果表明：该基因cDNA序列全长为958个核苷酸,包含一个完整Mn-SOD基因的ORF,编码224个氨基酸和终止密码子;该基因在基因组中序列长度为1416bp,包含4个外显子和3个内含子,这既不同于高等植物的6个外显子和5个内含子,也不同于人的5个外显子和4个内含子;该基因编码区密码子的平均GC含量为60.9%,第三位密码子的GC含量高达84.9%;序列中包含4个与Mn^2＋的结合位点及一个保守的金属结合结构域,预测分子量为24469.09Da,等电点为5.99;条斑紫菜Mn-SOD与人的相关蛋白具有类似的空间结构,都有6个跨膜α螺旋结构域;由cDNA序列推导的氨基酸序列与莱茵衣藻相似性为57.7%,系统发生分析表明条斑紫菜Mn-SOD与绿藻莱茵衣藻和硅藻海链藻的亲缘关系较近.这是该基因在红藻门中的首次报道.

关键词：条斑紫菜锰超氧化物歧化酶(Mn-SOD)基因序列分析

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

在发现问题中推进创造性游戏的有效开展——以小班角色游戏“菜市场”为例

引用

当代家庭教育 2021年第25期 73-74页

作者：庄云云福建省泉州市鲤城区第二实验幼儿园

在游戏中引导幼儿发现问题并解决问题是创造性游戏的有效推进点。笔者通过观察和实践,以小班角色游戏"菜市场"为例,从以幼儿为主体发现真问题、启发性引导幼儿解决问题、有序推进多种问题的解决、以问题为线索引入新主题等四方面阐述观... 详细信息

在游戏中引导幼儿发现问题并解决问题是创造性游戏的有效推进点。笔者通过观察和实践,以小班角色游戏"菜市场"为例,从以幼儿为主体发现真问题、启发性引导幼儿解决问题、有序推进多种问题的解决、以问题为线索引入新主题等四方面阐述观点。通过发现问题推进游戏,让幼儿充分自主地参与游戏,在游戏中丰富了生活经验,提升思维。

关键词：创造性游戏发现问题游戏推进

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

从六经病欲解时浅谈不寐

引用

中医临床研究 2019年第23期11卷 16-19页

作者：庄云赟王春霞山东中医药大学山东济南250000 山东省泰安市中医医院山东泰安271000

不寐是以超过一月不能获得正常睡眠为特点的一类病症,据《伤寒杂病论》对“欲解时”的表述会发现,不寐与少阴、厥阴和少阳有密切关系,虽然这三条经的“欲解时”相互交叉,但辨治时多从起点开始算。所以在临床上,可根据不寐的发病时间分... 详细信息

不寐是以超过一月不能获得正常睡眠为特点的一类病症,据《伤寒杂病论》对“欲解时”的表述会发现,不寐与少阴、厥阴和少阳有密切关系,虽然这三条经的“欲解时”相互交叉,但辨治时多从起点开始算。所以在临床上,可根据不寐的发病时间分经论治,借“欲解时”天气之助用药,调整人体阴阳,促进疾病向愈。

关键词：少阴病厥阴病少阳病欲解时不寐

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

甲氨基阿维菌素苯甲酸盐对海洋桡足类日本虎斑猛水蚤的急慢性毒性效应

引用

生态毒理学报 2019年第5期14卷 202-211页

作者：王晶庄昀筠陈洪举陈畅毛雪微刘光兴中国海洋大学环境科学与工程学院青岛266100 青岛海洋科学与技术国家实验室海洋生态与环境科学功能实验室青岛266200

甲氨基阿维菌素苯甲酸盐(简称甲维盐)是一种广泛应用于农业和水产养殖业的高效抗生素杀虫剂,会进入近海海洋环境从而对海洋生物造成影响。为初步探讨甲维盐对海洋桡足类产生的生物效应,研究了甲维盐对日本虎斑猛水蚤(Tigriopus japonicu... 详细信息

甲氨基阿维菌素苯甲酸盐(简称甲维盐)是一种广泛应用于农业和水产养殖业的高效抗生素杀虫剂,会进入近海海洋环境从而对海洋生物造成影响。为初步探讨甲维盐对海洋桡足类产生的生物效应,研究了甲维盐对日本虎斑猛水蚤(Tigriopus japonicus Mori)的死亡率、摄食率、滤水率、神经传导关键性酶和抗氧化防御系统中多种酶活性以及生殖、发育的影响。结果显示,甲维盐对于日本虎斑猛水蚤有显著的急性毒性影响,雌性成体和雄性成体的96 h-LC 50分别为7156μg·L^-1和3637μg·L^-1;雌性成体的24 h-EC 50为3.5μg·L^-1。暴露在不同甲维盐浓度(0.5、1、2、3.5和5μg·L^-1)条件下24 h后,日本虎斑猛水蚤的摄食率和滤水率随甲维盐浓度升高逐渐降低,乙酰胆碱酯酶(AchE)活性、抗氧化酶超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GPx)活性均随甲维盐浓度的升高先升高后趋于平稳,而过氧化氢酶(CAT)活性无显著变化。日本虎斑猛水蚤连续暴露2个世代,随着甲维盐浓度的升高,发育率逐渐降低;当甲维盐浓度达到0.5μg·L^-1时,10 d产卵量受到显著抑制,这说明甲维盐对其种群繁衍能力产生了显著影响。将第3代无节幼虫置于海水中进行恢复培养后发现,高浓度甲维盐暴露(0.5μg·L^-1)对日本虎斑猛水蚤发育和生殖均造成了不可逆的影响,毒性可能具有不可恢复性。本文可为评估甲维盐对海洋桡足类的潜在影响提供基础数据和依据。

关键词：甲维盐日本虎斑猛水蚤急性毒性,慢性毒性桡足类

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：