Results 31 to 40 of about 7,511 (237)
Genetic diversity of Noctiluca scintillans [PDF]
, 2016 夜光藻是一种常见的赤潮藻，在世界大部分近海海域均有分布。目前普遍认为夜光藻只有一个种，但还没有研究探索不同地理种群的夜光藻是否产生了种内变异。本研究通过单细胞PCR以及单细胞克隆文库的方法，比较了中国黄海、东海、南海，墨西哥湾以及阿拉伯海5个海域夜光藻核糖体基因的遗传多样性。主要研究结果如下： 1、发现22种ITS单倍型(n=103)，12种28S单倍型(n=25)，6种18S单倍型(n=31)；这3个基因的单倍型多样度(Hd)分别为0.824、0.670、0.557，核苷酸多样度(π)分别为0 ...
潘永柏
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Integrative Conservation, Volume 4, Issue 2, Page 231-245, June 2025.Plant order‐level Sankey plot illustrating plant use of ethnolinguistic groups for key disease types based on organ systems and use. Each node represents the strength of its interaction or usage. ABSTRACT Many human populations rely on natural remedies for health and healing, with traditional medicinal plants playing a vital role in diverse ...
Krizler C. Tanalgo +15 more
wiley +1 more source
Genetic diversity on the Genus Skeletonema (Bacillariophyceae) in the coastal waters of China [PDF]
, 2015 骨条藻（Skeletonema）是一类广泛分布于沿海水域的浮游硅藻，也是常见的赤潮生物。目前，对于整个中国沿海骨条藻的分类和分子生物学方面的研究，比较分散，还不能很好地回答我国沿海骨条藻的种类多样性和遗传多样性的问题。因此，本文选择我国沿海的代表性海区，进行周年采样，对分离培养的纯种株系，选择核糖体LSUnrDNA和ITS片段（5.8SrDNA及转录间隔区ITS1、ITS2）对其进行遗传多样性及系统进化分析，旨在从分子生物学方面分析我国沿海骨条藻属的种内、种间和地理株系间的差异，以及系统进化关系 ...
王琰
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Intragenic PNPLA1 duplication in Labrador retrievers with nonepidermolytic ichthyosis
Veterinary Dermatology, Volume 36, Issue 3, Page 314-320, June 2025.Background – Ichthyoses represent a heterogeneous group of cornification disorders characterised by epidermal scaling. Objectives – To describe the clinical, histopathological and genetic analysis of a Labrador retriever with nonepidermolytic ichthyosis, and the results of a Labrador retriever population screening for a newly detected PNPLA1 genomic ...
Stefan J. Rietmann +7 more
wiley +1 more source
, 2010 为认识我国淡水鱼类烂鳃病的病原以及柱形病在我国的发生情况,实验从发生烂鳃病的病鱼中分离细菌性病原,经过生理生化特性分析以及是否在含托普霉素的Shieh培养基中生长并形成黄色假根状菌落,是否产生降解明胶和硫酸软骨素的酶类等特性的鉴定,并结合16SrDNA序列分析,证实柱状黄杆菌(Flavobacterium columnare)是所分离的烂鳃病的病原。同时,研究也证实20世纪曾经命名为烂鳃(Gill-rot)病病原的鱼害黏球菌(Myxococcus piscicola Lu,Nie & Ko,1975 ...
姚卫建 +7 more
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China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition
Antipode, Volume 57, Issue 3, Page 830-861, May 2025.Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
wiley +1 more source
基于mtDNA D-loop区和Cyt b基因序列对鹅喉羚南疆亚种遗传多样性与系统进化地位的分析
野生动物学报, 2022 为进一步明确南疆地区鹅喉羚(Gazella subgutturosa)的遗传分化、遗传多样性水平和系统进化地位,以鹅喉羚南疆亚种(G.s.yarkandensis)为研究对象,运用PCR扩增和测序技术,研究mtDNA D-loop区和mtDNA Cyt b基因的序列特征,利用邻接法构建系统发育树和中介网络关系,以此阐明鹅喉羚南疆亚种的遗传多样性水平和系统进化地位。结果表明:鹅喉羚南疆亚种mtDNA D-loop区序列碱基A、T含量为60.38%,存在23个多态位点,占总位点数的2.90 ...
张永浩 韦庆浩 郭丽君 阿布都热合曼·吐尔逊 王玉涛
doaj
Integrative Conservation, Volume 3, Issue 4, Page 294-311, December 2024.Freshwater biodiversity in China is threatened by multiple anthropogenic factors, and while there are some reasons to suppose it may be possible to bend the curve of biodiversity loss, the variety of threats and their likely interactions with ongoing climate change provide little basis for optimism. For example, the historic overexploitation of Yangtze
David Dudgeon
wiley +1 more source
Screening of SNP Loci of Growth-related Candidate Gene and Genetic Diversity of Five Populations Based On Microsatellite Markers in Fujian Oyster, Crassostrea angulata [PDF]
, 2015 福建牡蛎(Crassostreaangulata，C.angulata)又名葡萄牙牡蛎，具有重要的经济价值和生态价值，但由于长期未经选育以及人工育苗的应用，导致牡蛎养殖出现经济性状衰退及死亡率逐年增高等现象，亟需加强种质资源保护，开展遗传改良研究。本研究利用单核苷酸多态性分子标记（singlenucleotidepolymorphism，SNP）对福建牡蛎生长相关的5个候选基因，即胰岛素相关多肽（insulinrelatedpeptides，IRPs）、ɑ-淀粉酶（ɑ-Amylase，ɑ-AMY ...
楚瑞敏
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Environmental niche models improve species identification in DNA barcoding
Methods in Ecology and Evolution, Volume 15, Issue 12, Page 2343-2358, December 2024.Abstract Recent advances in DNA barcoding have immeasurably advanced global biodiversity research in the last two decades. However, inherent limitations in barcode sequences, such as hybridization, introgression or incomplete lineage sorting can lead to misidentifications when relying solely on barcode sequences.
Cai‐qing Yang +6 more
wiley +1 more source