Results 41 to 50 of about 11,600 (169)
Conservation Biology, Volume 38, Issue 5, October 2024.Abstract Illegal collecting of wild Venus flytraps (Dionaea muscipula) for the horticultural trade represents a persistent threat to populations of the species across their endemic range in the coastal plain of North and South Carolina (United States). Although wild collecting of Venus flytraps is not a novel threat, there has been very little research
Jared D. Margulies +10 more
wiley +1 more source
野生动物学报, 2010 2006～2008年,北京动物园繁殖的17只1.5～3.5月龄丹顶鹤幼鹤出现厌食、精神倦怠、呼吸困难等症状。采用PCR方法鉴定病原,使用特异性引物对线粒体细胞色素b、细胞色素氧化酶Ⅰ、18S rRNA及线粒体部分非编码区基因进行扩增、克隆、测序,结合GenBank中已知疟原虫序列,经DNAMAN软件处理分析,并对Cytb序列用软件MEGA 4.0建NJ树。序列分析表明丹顶鹤血孢子虫靶序列与鸟疟原虫序列相似性达到98%以上,进化关系分析表明与残疟原虫各株属同一个种群,证明该病病原为残疟原虫 ...
贾婷 +12 more
doaj
Host location behavior of Aedes albopictus and Empoasca vitis: olfactory and visual effects on their orientation [PDF]
, 2015 在昆虫宿主定位行为中，嗅觉与视觉究竟哪个更为重要至今尚无定论。本研究选择福建地区广泛分布、并且具有重大危害的白纹伊蚊（Aedesalbopictus）和假眼小绿叶蝉（Empoascavitis）为研究对象，以干扰害虫对宿主生物的定向通讯行为为研究思路，整合形态学、分子生物学和行为学方法试图揭示嗅觉和视觉在昆虫宿主定位行为中的作用。以期深入理解昆虫的宿主定位行为机制并为害虫防治提供新思路。研究结果如下： （1）应用RACE技术获得白纹伊蚊嗅觉共受体基因（AalbOrco）全长编码序列 ...
章旭日
core
Assessing the risk of overexploitation to a tarantula species in the pet trade
Conservation Biology, Volume 38, Issue 5, October 2024.Abstract The global pet trade in invertebrates remains poorly understood and underrepresented in policy and research. Tarantulas are a highly traded invertebrate group. Many individuals in trade are wild caught, and trade regulation is often lacking, raising concerns about the effect of trade on local ecosystems and populations.
Shannon Noelle Rivera +4 more
wiley +1 more source
Gaoya dianqi, 2015 在实际工程中,特高压交流输电线路为保证三相平衡经常采用变相序的方法进行运行。为掌握相序对特高压交流输电线下工频电磁场的影响情况,笔者以荆门—南阳—晋东南1 000 kV特高压输电线路为例,采用线单元模拟电荷法和基于毕奥—沙伐尔定律的数值计算方法分别对不同相序运行时的工频电场和工频磁场分布情况进行了仿真分析。分析发现:同相序排列时电场强度较大,逆相序排列时电场强度较小,而工频磁场在逆相序排列方式时稍大,在同相序排列方式时较小。
邹岸新, 徐禄文
doaj
Adenosine Monophosphate-Activated Protein Kinase (AMPK) and Calreticulin (CRT) Genes in the Mud Crab, Scylla paramamosain: cDNA Cloning and Profiles under Low Temperature Stress [PDF]
, 2016 低温胁迫会影响生物体内多个生理过程，如能量代谢和免疫应答等；而生物体内有多种物质参与低温胁迫调节。AMP活化蛋白激酶(AMP-activatedproteinkinase，AMPK)的主要功能为促进ATP产物的积累和减少ATP的消耗，使得机体内积累大量的ATP以供生命活动的能量需要。钙网蛋白(calreticulin，CRT)主要存在于内质网和肌浆网，不仅作为细胞内质网的分子伴侣参与新生蛋白的折叠及调节细胞内Ca2+平衡，而且具有促进细胞黏附、调节免疫应答等重要作用。为探讨这2个基因在拟穴青蟹 ...
黄陈翠
core
Policy &Internet, Volume 16, Issue 3, Page 543-566, September 2024.Abstract Content moderation comes with trade‐offs and moral dilemmas, particularly for transnational platforms governing borderline content where the boundaries of acceptability are subject to debate. While extensive research has explored the legality and legitimacy of platformised speech governance in established democracies, few address the ...
Diyi Liu
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2005 【目的】为了研究DMD基因内含子的重复序列与内含子不稳定性和基因缺失的关联,我们分析了缺失型DMD病人的连接片段的断裂点并研究了DMD基因内含子结构与内含子不稳定性之间是否存在相关。【方法】多重引物PCR法鉴定缺失型DMD患者,分别克隆46和51号外显子缺失后形成的连接片段,测定连接片段的序列;并用计算机分析DMD基因可以获得的全部内含子的结构特点。【结果】对46号和51号外显子缺失后形成的连接片段的序列分析表明,5’和3’端的断裂点均位于重复顺序,断裂点附近无小插入、小缺失或点突变 ...
盛文利
doaj
The cloning，expression and characterization of the Marsupenaeus japonicus ML gene (MjML) [PDF]
, 2016 日本囊对虾(Marsupenaeusjaponicus)是我国四大养殖对虾品种之一，具有重要的经济价值。日本囊对虾幼体发育过程复杂，受精卵孵化后需要经过无节幼体，溞状幼体，糠虾幼体和仔虾4个发育阶段，发育过程中蜕皮频繁，蜕皮周期较短。近年来，随着日本囊对虾养殖规模的逐步扩大，各种细菌性疾病对其养殖业的发展造成了巨大的影响，并造成了严重的经济损失。 ML(MD-2-relatedLipid-recognition)家族为一类具有保守ML单结构域的蛋白质，能够直接和脂类结合 ...
徐伊桦
core
Methods in Ecology and Evolution, Volume 15, Issue 8, Page 1408-1421, August 2024.Abstract Environmental DNA (eDNA) monitoring of species distribution has become a critical tool in ecology, conservation biology and fisheries for identifying the presence and distribution of diverse organisms, including important, threatened and invasive species.
Jiwei Yang +4 more
wiley +1 more source