954 resultados para REVISION SISTEMATICA
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毛茛科(Ranunculaceae )铁线莲属(Clematis L.)长瓣铁线莲组(Sect. Atragene) 植物全世界约有14-18 种,我国约有6 种,广泛分布于北温带的高山上。该组植物由于外部形态变异大,种间或种下划分十分困难,目前已发表的种及种下分类群名称多达130 余个,名称使用较为混乱,组内系统关系尚存争议。本文通过文献考证、标本研究、野外观察及形态性状统计分析的综合研究,对长瓣铁线莲组进行了全面的分类学修订,结果如下: 1、性状分析 深入研究了1000 余号该组植物标本的形态性状变异式样、范围及其相关性,发现复叶类型、小叶大小、萼片毛被和质地、萼片脉突出与否、退化雄蕊长度等是较为稳定的分种性状。生长习性、萼片颜色、萼片边缘是否具短绒毛带、退化雄蕊形状等对种下划分具有重要的意义。 2、分类学处理 1)根据该组植物的萼片和退化雄蕊的特征和演化趋势,建立了5 个新系:Ser. 1. Occidentales、Ser. 2. Alpinae、Ser. 3. Koreanae 、Ser.4. Tomentosae 和Ser. 5. Macropetalae 。 2)对长期以来分类上争议很大,且分类十分困难的类群作出以下新的处理:把C. sibirica 和C. ochotensis 作为C. alpina 的亚种;把日本的C. fusijamana 和C. fauriei 降级为半钟铁线莲C. alpina ssp. ochotensis 的变种;把伊犁铁线莲C. iliensis 降级为西伯利亚铁线莲C. alpina ssp. sibirica 的变种;把C. chiisanensis 降级为朝鲜铁线莲C. koreana 的变种;把紫红花长瓣铁线莲C. macropetala var. punicoflora 和石生长瓣铁线莲C. macropetala var. rupestris 处理为长瓣铁线莲C. macropetala 的异名;把C. dianae 归并入白色长瓣铁线莲C. macropetala var. albiflora;支持长白铁线莲C. nobilis 作为一个独立的种。此外,还新指定了5 个名称的后选模式;纠正了前人对中国C. subtriternata 的鉴定错误。 3)确认该组植物有9 种2 亚种和9 变种(包括3 新等级),给出了各个分类群详细的文献引证、描述、生境、地理分布、标本引证和外部形态图,并编写了组下分系和分种检索表。认为亚洲东北部是本组植物分布的多样性中心。 3、形态性状演化趋势和各系的亲缘关系 探讨了该组植物形态性状演化的趋势和新建立的5 个系的亲缘关系,提出:退化雄蕊可能由外部雄蕊演化而来,并沿两条路线演化发展:其一是退化雄蕊伸长,与萼片近等长或长于萼片,顶端渐狭,呈披针形;其二是退化雄蕊不伸长,与雄蕊近等长,上部加宽,顶端由钝形、圆形发展至微凹,呈匙形。萼片演化的趋势可能由质地薄到质地厚,萼片脉由不凸出到3 条脉凸出。由此推测北美洲类群Ser. Occidentales 可能是本组的原始类群;Ser. Macropetalae 可能是退化雄蕊在第一条演化路线上最进化的类群;Ser. Alpinae 和Ser. Koreanae 之间亲缘关系较近;Ser. Tomentosae 的系统位置尚未确定。
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本论文包括两部分的内容,第一部分是秦岭苔类植物的区系研究,第二部分是中国剪叶苔属Herbertus的分类学修订。 秦岭位于我国的中部,东经104º30´~112º52´,北纬32º50´~34º45´N,约76 500 km2。它主要位于陕西省的南部地区,并包括了河南、甘肃和湖北的部分县、市。秦岭的最高峰是太白山,海拔3 767米。秦岭是长江和黄河的分水岭,也是我国温带和亚热带气候的过渡地带。 本研究包含了对自19世纪开始对秦岭苔藓植物的主要采集活动的回顾,和截止2008年以来对秦岭苔类和角苔类植物报道的总结和分析,且首次给出了一份秦岭地区详细的苔类植物的名录,并包括了各个种在秦岭地区的详细分布。根据目前的研究,现已知秦岭的苔类植物有226种(包括种下单位,以下同),其中角苔纲1科3属6种,苔纲30科59属220种;提出了1个新异名:Radula constricta Steph.被处理为Radula lindenbergiana Gottsche var. atypa Massalongo的异名;并提出了1个新组合Metzgeria pubescens var. kinabaluensis (Kuwah) F.X. Li & Y. Jia;发现秦岭新分布的苔类有78种。根据种数,秦岭地区苔类的优势科为光萼苔科(34种),其次为耳叶苔科(23种),裂叶苔科(23种)和羽苔科(19种)。 通过对这些种地理成分的统计,发现秦岭苔类的地理成分以北温带成分为主,占35.05%;其次是东亚成分占到31.78%,这两种地理成分在秦岭占了很大比例,高达66.83%。热带成分相对较少,有22种,占到10.29%。对于苔类来说,中国特有成分在秦岭地区较多,已知有34种,占到15.89%。说明秦岭地区苔类地理成分以温带为主,热带成分占少量比例,且秦岭地区的特有性也比较高。 文章第二部分是对中国剪叶苔属Herbertus S. Gray的分类学修订。剪叶苔属隶属于剪叶苔科,是一个古老而自然的类群,广泛分布于热带和南北温带地区。剪叶苔属植物由于其叶横生或近于横生,侧叶2裂,腹叶2裂或部分不对称3裂,并具假肋,叶细胞具大的三角体而明显区别于苔类的其它属。虽然这个属的概念比较清楚,但在属内种间的划分上存在较大的问题,是苔类中分类较混乱的一个类群。剪叶苔属种的概念多基于叶片形态,包括裂瓣的顶端细胞和假肋的形态及叶基盘边缘附属物的形态。但这些形态特征具很大的可塑性,性状不稳定,造成该属种的概念很模糊。目前全世界剪叶苔属约100余种。中国剪叶苔属的种类尚不确定,《中国苔藓志》中报道了中国有25种l亚种,但Juslen在2006年对亚洲剪叶苔属的修订中,提到中国分布的仅有6种。二者的研究中都存在有一些疏漏和不足之处,对有些种还有争议;且他们的研究中引证的标本都很少,不能全面反映中国剪叶苔属的种类和分布情况。 本研究着手于中国的剪叶苔属,从模式标本入手,从模式标本入手,结合对前人文献中引证标本的查阅,并检视了全国各大标本馆收藏的大量该属的普通标本,对于分类归并上有争议的种,采用扫描电镜和分子生物学的手段进行实验性的研究,对中国的剪叶苔属进行一个全面系统的分类学修订。期望通过本研究,明确中国剪叶苔属的种类和分布情况,为东亚乃至世界剪叶苔属的分类修订提供一份翔实的资料。共查阅了剪叶苔属26个种的模式标本,并检视了中科院北京植物研究所、华南植物园和深圳仙湖植物园馆藏的大量该属植物标本,约600余份。 通过本研究,提出2个新异名:将H. buchii Juslén和H. longispinus var calvs Massalongo处理为H. dicranus (Taylor) Trevis.;将樱井剪叶苔H. sakuraii (Warnst.) S. Hatt.(原并入H. dicranus)和H. minimus Horik.(原并入H. dicranus)重新提出;发现1个中国新分布:H. setigerus (Steph.) H. A. Mill.;确认中国的剪叶苔属17种1亚种:剪叶苔H. aduncus (Dicks.) Gray,剪叶苔纤细亚种H. aduncus subsp. tenuis (A. Evans) H. A. Mill.et E. B. Bohrer,H. armitanus (Steph.) H. A. Mill.,南亚剪叶苔H. ceylanicus (Steph.) Abeyw.,长角剪叶苔H. dicranus (Taylor) Trevis.,高氏剪叶苔H. gaochienii Fu,广东剪叶苔H. guangdongii P.J. Lin & Piippo,卵叶剪叶苔H. herpocladioides Scott. et. Miller,红枝剪叶苔H. huerlimannii Miller,细指剪叶苔H. kurzii (Steph.) H. A. Mill.,长肋剪叶苔H. longifissus Steph.,长刺剪叶苔H. longispinus Jack et Steph.,H. minimus Horik.,长茎剪叶苔H. parisii (Steph.) H. A. Mill.,多枝剪叶苔H. ramosus (Steph.) H. A. Mill.,樱井剪叶苔H. sakuraii (Warnst.) S. Hatt.,短叶剪叶苔H. sendtneri (Nees) Lindb.和H. setigerus (Steph.) H. A. Mill.。本研究还在扫描电镜下观察了H. armitanus、长角剪叶苔H. dicranus和多枝剪叶苔H. ramosus的孢子形态。对于剪叶苔属的修订,还需要更多模式标本的借阅,随着研究深入,剪叶苔属的种类可能会有大量的减少,中国剪叶苔属的种类也将会有一定的减少。
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The National Marine Fisheries Service (NMFS) Northeast Fisheries Science Center (NEFSC) Fisheries Sampling Branch (FSB) collects, maintains, and distributes data for scientific and management purposes in the northwest Atlantic Ocean. FSB manages three separate but related observer programs: the Northeast Fisheries Observer Program (NEFOP), the Industry Funded Scallop (IFS) Observer Program, and the At Sea Monitoring (ASM) Program. For the purposes of this manual, “observers” refers to any observer/monitor working for the FSB. In 2011, FSB trained and deployed over 200 observers, provided coverage on a variety of fisheries, and completed over 15,000 sea days. Observed trips are required under many of the region's fishery management plans, and for some fisheries by other federal laws and authorities such as Amendment 16 and Framework 44, Magnuson-Stevens Fishery Conservation and Management Act, Marine Mammal Protection Act, the Endangered Species Act, the and the Sustainable Fisheries Act. The purpose of this guide is to provide FSB observers, as well as end users of NEFSC Observer Program data, with a detailed description of each data field collected. In addition to this manual, the NEFSC Observer Program Biological Sampling and Catch Estimation Manual provides summaries and tables intended to enable observers to quickly determine the correct sampling protocols and methods while at sea. This manual represents a revision of the data forms, collection procedures, and protocols described in the 1996 NEFSC Observer Program Manual. For documentation of other changes see Documentation of changes made to the NEFSC Fisheries Observer Program Manual, 2013.
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This work aims to be a systematic description of marine fisheries of Mozambique, analysing old and new data. The various fish resources were divided in crustaceans, fish and other resources. The latest revision was presented during the Mozambique/NORAD Seminar on marine resources (1984), which also included fishing potential estimates. Mozambique does not have a national system of statistical data collection that covers all fisheries and this affects in particular the artisanal sector. The industrial and semi-industrial fisheries, however, are well covered and produce reliable data on catch and effort for resources evaluation.
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Vocational courses in fisheries are offered in 4 states in India. The technologies in fisheries developed offer good scope for vocational training for self employment. There is an urgent need to have radical revision of the course content to make the students vocationally competent.
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The collection of blue green algae kept at the herbarium of the Royal Botanical Gardens, Peradeniya, was collected by Ferguson more than 70 years ago. Since then many changes have taken place in the taxonomy of the blue green algae. West (1902), Lemmermann (1907), Wine (1915), Crow (1923), Bharadwaja (1934) and Holsinger (1935) had described some of the blue green algae of Ceylon. While examining the collections of blue green algae kept at the herbarium, the authors found that most of the identifications were incorrect and required revision. In the present paper 20 blue green algae are described. The classification and key to the species are based on the characters given by Desikachary (1959). Blue green algae are important to fisheries since Chanos larvae feed on them.
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The complications of impaction bone grafting in revision hip replacement includes fracture of he femur and subsidence of the prosthesis. In this in vitro study we aimed to investigate whether the use of vibration, combined with a perforated tamp during the compaction of morsellised allograft would reduce peak loads and hoop strains in the femur as a surrogate marker of the risk of fracture and whether it would also improve graft compaction and prosthetic stability. We found that the peak loads and hoop strains transmitted to the femoral cortex during graft compaction and subsidence of the stem in subsequent mechanical testing were reduced. This innovative technique has the potential to reduce the risk of intra-operative fracture and to improve graft compaction and therefore prosthetic stability. © 2007 British Editorial Society of Bone and Joint Surgery.
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The phylogeny of Chinese leaf monkeys, especially the snub-nosed monkeys (Rhinopithecus), has not been thoroughly investigated using molecular sequence data, perhaps due to their rarity in the wild and their poor representation in institutional collections. Despite several proposed classifications, systematic relationships of these species remain poorly defined and this has hindered their conservation. To clarify the phylogenetic relationships of the leaf monkey clade in China, we sequenced the mitochondrial ND3, ND4L, ND4, tRNA(Arg), tRNA(His), tRNA(Ser), and tRNA(Leu) genes for Rhinopithecus bieti, R. roxellana, Trachypithecus francoisi, T. f. leucocephalus, and T. phayrei as well as Pygathrix nemaeus and Colobus guereza. We included a rotal of 2252 characters for each individual, excluding gaps in primary sequences. Our interpretation of the results from character- and distance-based phylogenetic analyses suggest that (1) Pygathrix nemaeus is sister to Rhinopithecus rather than to Trachypithecus though it is quite divergent from the former; (2) the Yunnan snub-nosed monkey, Rhinopithecus bieti, represents a valid species; (3) the white-headed leaf monkey is not a distinct species, but instead is a subspecies of Trachypithecus francoisi (T. f. leucocephalus), though it should still be considered a separate evolutionarily significant unit (ESU); and (4) because two individuals of the Phayrei's leaf monkey, T. phayrei, are genetically distinct from one another, a more extensive revision of the taxonomy of this putative species in China is needed. These results, plus ongoing work on the molecular systematics of the entire Asian leaf monkey radiation, can provide a sound basis for identifying the appropriate units of conservation for this endangered group of primates.
Sequencing, annotation and comparative analysis of nine BACs of giant panda (Ailuropoda melanoleuca)
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A 10-fold BAC library for giant panda was constructed and nine BACs were selected to generate finish sequences. These BACs could be used as a validation resource for the de novo assembly accuracy of the whole genome shotgun sequencing reads of giant panda newly generated by the Illumina GA sequencing technology. Complete sanger sequencing, assembly, annotation and comparative analysis were carried out on the selected BACs of a joint length 878 kb. Homologue search and de novo prediction methods were used to annotate genes and repeats. Twelve protein coding genes were predicted, seven of which could be functionally annotated. The seven genes have an average gene size of about 41 kb, an average coding size of about 1.2 kb and an average exon number of 6 per gene. Besides, seven tRNA genes were found. About 27 percent of the BAC sequence is composed of repeats. A phylogenetic tree was constructed using neighbor-join algorithm across five species, including giant panda, human, dog, cat and mouse, which reconfirms dog as the most related species to giant panda. Our results provide detailed sequence and structure information for new genes and repeats of giant panda, which will be helpful for further studies on the giant panda.
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In Iranian Coastline water of Persian Gulf we researched about flat fishes and revision their Scientitic names, Investigated diversity species (Pleuronectiformes) around three provinces such as khouzestan, Bushehr and Hormozgen. The aim focuse on introducting major family and Species Identification for this Purpose 1311 Specimens collected. Then 36 investigation Parameters includes 18 Morphometric, 11 meristic, 7 distribution has been measured in Excel. The descriptive statistic in spss software would be able us to graph dendrograms by Clustering methods, then Design a standerd table and comparised all the datas with it six major family has been found in Iranian Coasline which named: Soleidae, Bothidae Paralichtidae, Cynoglossidae, Psettodidae, Citharidae. Some of the scientific species names such as Pseudorombus arsius, P. annulatus, P. elevatus, P.malayanus, P. triocellatus from Bothidae family Join it to Paralichtidae family and Eurylossa orientalis change It's name from Soleidae family to Brachirus onentalis. Cynoglossus, bilineatus, C.Puncticepts, C.durbaensis, Clachneri, one of the most Important Point that viewed in our samples, founding a new species (C.Sp) Which we couldn't identify it with all the known keys, then sent it to international Scientific references for this porpose. (Family Cynoglossidae); Pseudorombus annulatus, P. elevatus P.arsius, P.malayanus, paralichtodes algoensis, Poecilopstei Javanicus (Family paralichthidae) Arnoglossus aspilos,A.arabicits, Engyprosopon grandisquama, L.pectoralis, Pseudorombus navalensis, Psettina brevirictis (family Bothidae); Psettodes erumei (Family Psettodidae); Citharoides macrolepis (Family Citharidae) in khouzestan Brachirus orientalis, Parachirus marmoratus, solea elongata, Zebrias synapturides (Family Soleidae) Cynoglossus bilineatus, C.puncticeps, C.arel, C.kopsii, C. Capenis (Family cynoglossida); Pseudorombus arsius, P. elevatus, P. malayanus, Poecilopstei javanicus (Family Paralichthidae); Laeops guentheri, Arnoglossus aspilos, Engyprosopon grandisquama (Family Bothidae); Psettodes erumei (Family psettodidae) in Bushehr. Brachirus orientalis, Parachirus marmoratus (Family Soleidae); Cynoglossus arel, C.bilineatus, C.Puncticeps, C. lachheri (Family cynoglossidae); Pseudorombus arisus, P. elevatus, P. malayanus, Poecilopestie j avanicus (Family parlichthidae); Arnoylossus aspilos, A. arabicus, Laeopes guentheri (Family Bothidae); Psettodes erumei (Family Psettodidae); Citharoides macrolepis (Family Citharidae) In Hormozgan. Khozestan has the maximus diversity speices (26 species) and the minimum is Hormozgan (15 Speices). 13 species of five family has never reported inpersian Gulf but we identify them in our studies for the first time. We abserved 29 Species of six family in our studies, comparision between are resualts with other researches shows that this use is the most compelet study in Iranian coastline water of Persian Gulf.
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Based on the pelage characteristics and results of multivariate and univariate analyses, a new subspecies is described in this study, and a taxonomic revision of Tamiops swinhoei from China is presented. In total, 123 specimens of Tamiops swinhoei were in
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We studied the altitudinal ranging of one habituated group of black-crested gibbons (Nomascus concolor) at Dazhaizi, Mt. Wuliang, Yunnan, China, between March 2005 and April 2006. The group ranged from 1,900 to 2,680 m above sea level. Food distribution was the driving force behind the altitudinal ranging patterns of the study group. They spent 83.2% of their time ranging between 2,100 and 2,400 m, where 75.8% of important food patches occurred. They avoided using the area above 2,500 m despite a lack of human disturbance there, apparently because there were few food resources. Temperature had a limited effect on seasonal altitudinal ranging but probably explained the diel altitudinal ranging of the group, which tended to use the lower zone in the cold morning and the higher zone in the warm afternoon. Grazing goats, the main disturbance, were limited to below 2,100 m, which was defined as the high-disturbance area (HDA). Gibbons spent less time in the HDA and, when ranging there, spent more time feeding and travelling and less time resting and singing. Human activities directly influenced gibbon behaviour, might cause forest degradation and create dispersal barriers between populations. Copyright (C) 2010 S. Karger AG, Basel
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Background: China, with around 30 unique breeds, has a diverse duck genetic pool. Currently, there is no systematic report which investigates the genetic diversity, phylogenetic relationship, and matrilineal genetic structure of these domestic breeds and
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BACKGROUND: When fresh morselized graft is compacted, as in impaction bone-grafting for revision hip surgery, fat and marrow fluid is either exuded or trapped in the voids between particles. We hypothesized that the presence of incompressible fluid damps and resists compressive forces during impaction and prevents the graft particles from moving into a closer formation, thus reducing the graft strength. In addition, viscous fluid such as fat may act as an interparticle lubricant, thus reducing the interlocking of the particles. METHODS: We performed mechanical shear testing in the laboratory with use of fresh-frozen human femoral-head allografts that had been passed through different orthopaedic bone mills to produce graft of differing particle-size distributions (grading). RESULTS: After compaction of fresh graft, fat and marrow fluid continued to escape on application of normal loads. Washed graft, however, had little lubricating fluid and better contact between the particles, increasing the shear resistance. On mechanical testing, washed graft was significantly (p < 0.001) more resistant to shearing forces than fresh graft was. This feature was consistent for different bone mills that produced graft of different particle-size distributions and shear strengths. CONCLUSIONS: Removal of fat and marrow fluid from milled human allograft by washing the graft allows the production of stronger compacted graft that is more resistant to shear, which is the usual mode of failure. Further research into the optimum grading of particle sizes from bone mills is required.
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Background: When fresh morselized graft is compacted, as in impaction bone-grafting for revision hip surgery, fat and marrow fluid is either exuded or trapped in the voids between particles. We hypothesized that the presence of incompressible fluid damps and resists compressive forces during impaction and prevents the graft particles from moving into a closer formation, thus reducing the graft strength. In addition, viscous fluid such as fat may act as an interparticle lubricant, thus reducing the interlocking of the particles. Methods: We performed mechanical shear testing in the laboratory with use of fresh-frozen human femoral-head allografts that had been passed through different orthopaedic bone mills to produce graft of differing particle-size distributions (grading). Results: After compaction of fresh graft, fat and marrow fluid continued to escape on application of normal loads. Washed graft, however, had little lubricating fluid and better contact between the particles, increasing the shear resistance. On mechanical testing, washed graft was significantly (p < 0.001) more resistant to shearing forces than fresh graft was. This feature was consistent for different bone mills that produced graft of different particle-size distributions and shear strengths. Conclusions: Removal of fat and marrow fluid from milled human allograft by washing the graft allows the production of stronger compacted graft that is more resistant to shear, which is the usual mode of failure. Further research into the optimum grading of particle sizes from bone mills is required. Clinical Relevance: Understanding the mechanical properties of milled human allograft is important when impaction grafting is used for mechanical support. A simple means of improving the mechanical strength of graft produced by currently available bone mills, including an intraoperative washing technique, is described.