科创中国

ATPase?6/8?gene?(842?bp)?of?mitochondrial?DNA?was?sequenced?in?Labeo?rohita?samples?(n?=?253)?collected?from?nine?rivers?belonging?to?four?river?basins;?Indus,?Ganges,?Brahmaputra?and?Mahanadi.?Analysis?revealed?44?haplotypes?with?high?haplotype?diversity?(Hd)?0.694?and?low?nucleotide?diversity?(π)?0.001.?The?within?population?variation?was?larger?(83.44%)?than?among?population?differences?(16.56%).?The?mean?Fsv?value?(0.166;?P?〈?0.05)?for?overall?populations?revealed?moderate?level?of?genetic?structuring?in?the?wild?L.?rohita?populations.?The?haplotype?network?presented?a?single?clade?for?wild?L.?rohita?population,?from?different?rivers.?Negative?values?for?Fu's?index?(Fs),?mismatch?distribution?analysis?indicated?period?of?expansion?in?L.?rohita?population.?The?time?after?recent?expansion?was?estimated?for?each?population,?between?0.042?to?0.167?mya.?The?pattern?of?Isolation?by?Distance?(IBD)?was?not?significant?(r?=?-0.113,?P?〈?0.287),?when?all?the?sampling?locations?were?compared?(Mantel?test),?however,?when?an?outlier?(Indus,?Brahmaputra?and?Mahanadi)?was?removed?from?the?whole?population?set,?a?clear?positive?correlation?between?pairwise?Fsv?and?geographic?distance?(Km)?was?seen.?The?analysis?of?data?demonstrated?that?ATPase6/8?gene?polymorphism?is?a?potential?marker?to?understand?genetic?population?structure?of?wild?L.?rohita?existing?in?different?rivers.?The?study?identified?population?substructure?in?wild?L.?rohita?with?common?ancestral?origin?[Current?Zoology?60?(4):?460--471,?2014].

总结了近年来在鱼类物种鉴定中常用的DNA序列分析、DNA指纹技术、物种特异性聚合酶链式反应和实时荧光PCR技术等DNA检测方法,同时对各类方法的特点和局限性进行了分析.

医学节肢动物中蜱作为主要的媒介生物不仅叮咬人和动物,吸食其血液,也是许多严重传染病的传播媒介。内蒙古有关蜱类的系统研究开始于20世纪60年代,以姚文炳等为代表发表了一系列关于内蒙古蜱类的研究论文,这些文献资料散布在各种期刊和书籍中,内蒙古自治区地方病防治研究中心在研究与蜱类有关的疾病中也收集了内蒙古东部、中部和西部的蜱类标本1000余份,通过检索文献资料和检视标本发现内蒙古蜱类共有2科7属27种,本文记述了内蒙古部分蜱类标本的鉴定结果,并列出了内蒙古蜱类的分布和宿主。另外,对内蒙古蜱传疾病的研究做了回顾。

近来多肉真的很红。随着多肉植物的热销,爱好者家族日益壮大。论坛、博客、QQ群等网络资源成为多肉植物爱好者的交流平台。随便翻翻,“仙珍园”注册会员已近三万五,“仙人论坛”会员一万五,还有“多肉植物吧”“亚洲多肉植物论坛”、“花谈”等等,不胜枚举。多肉植物已然成为时下年轻一族的热门话题,而周边的很多人也纷纷挤进“多肉养植户”的大军。那肥嘟嘟的枝叶、讨人喜爱的姿态,总使人忍不住想去捏捏那肉乎乎的叶片!“肉迷”“拼肉”“肉仙”等名词在网上屡见不鲜,多肉植物正迎来自己的春天。但你了解多肉吗?

多肉植物向来以新、奇、特和怪异而闻名。此文我们特意请多肉植物专家谢维荪为您奉上一些目前市面上还很少见到的新奇种类,供大家欣赏。

目的 思考药学服务工作中存在的问题及改进措施,为临床药师的成长提供有意义的参考.方法 介绍2011年1月至2011年7月我院临床药师参与呼吸科查房,并协助医师进行药物治疗的案例,分析和总结临床药师在药学服务工作中的不足与改进措施.结果 和结论 临床药师应注重不断提高自身的综合素质,同时得到相应政策的支持,医院药学服务工作会有更好的发展.

观察并量化鱼类面对诸如拖网等主动式采样器具时的行为是一个挑战.应用一种高频成像声纳(DIDSON)在中等到富营养的水库直接观察并记录了鱼类在一张主动式中上层拖网网口前的躲避行为.在这个多鱼种水库环境中鱼类表现出了多样的行为模式.声学分析显示,在拖网区域内鱼类有76%被捕获,有24%则游出了该区域.

2012年6月20日上午,2012中联重科混凝士机械公司"蓝色关爱"品牌行在江苏泰州碧桂园酒店正式启动.

Relationship between species' home range and their other biological traits remains poorly understood, especially in migratory birds due to the difficulty associated with tracking them. Advances in satellite telemetry and remote sensing techniques have proved instrumental in overcoming such challenges. We studied the space use of migratory ducks through satellite telemetry with an objective of understanding the influence of body mass and feeding habits on their home-range sizes. We marked 26 indi- viduals, representing five species of migratory ducks, with satellite transmitters during two consecutive winters in three Indian states. We used kernel methods to estimate home ranges and core use areas of these waterfowl, and assessed the influence of body mass and feeding habits on home-range size. Feeding habits influenced the home-range size of the migratory ducks. Carnivorous ducks had the largest home ranges, herbivorous ducks the smallest, while omnivorous species had intermediate home-ranges. Body mass did not explain variation in home-range size. To our knowledge, this is the first study of its kind on migratory ducks, and it has important implications for their conservation and management [Current Zoology 60 (5): 616-621, 2014].

下一步是增加空气系统.为了取消在USB项目7516-OCAT网箱的沉没测试中计划测试所需要的潜水呼吸器,必须安装空气系统.在下部和斜管的HDPE上钻孔并攻丝用于注入和排放空气和水(图17).安装了铜的输入阀门和管接头.所有进气阀和管接头都是3/8英寸的.斜管和底部管子上的进水管阀门是0.75英寸的,这样能加速管内水的注入和排放.在阀门的螺纹上使用了螺纹密封剂(液态的Teflon)以确保阀门不会漏气.经验证明在HDPE管子上钻孔和攻丝的方法能取得很好的效果.