中国叩甲科一新记录种

作者在整理、鉴定山西省叩甲科种类时,发现一中国新记录种,兹报道如下:虎斑叩甲Selatosomusonerosus(Lewis,1894)(图1) Corymbites onerosus Lewis,1894:Ann.Mag.nat.Hist.(6)13:260. 体中型,被灰白色细毛。头黑色,扁平。额前缘中部无额脊,不与唇基相分离。额、上唇、唇基几乎呈一平面。触角黑褐色,第     

五种槽缝叩甲超微形态结构的比较研究 (鞘翅目:叩甲科)

通过扫描电镜观察了槽缝叩甲属Agrypnus 5种的触角、前胸背板、中胸小盾片、鞘翅、前胸腹板、前胸侧板、中胸腹窝、跗节等部位的超微形态结构,提出了5种槽缝叩甲超微形态的区别特征,发现了槽缝叩甲体表鳞片毛上的纵脊数目和走向、中胸腹窝的结构与形状、体表刻点的形态等具有明显的种间差异,具有重要的分类学意义。讨论了硬结构昆虫扫描样品制备的程序,叩甲的叩头关节、触角槽、跗节槽的形成与功能,以及超微形态结构在叩甲分类上的价值等。     

中国北叩甲属一新记录种

本文记述北叩甲属Ｄｉａｃａｎｒｔｈｏｕｓ １中国新记录种：横纹北叩甲Ｄ．ｕｎｄｏｓｕｓ（Ｌｅｗｉｓ）。     

中国短角叩甲属记述（鞘翅目：叩甲科）

中国短角叩甲属记述（鞘翅目：叩甲科）江世宏华中农业大学植保系武汉４３００７０短角叩甲属Ｖｕｉｌｌｅｔｕｓ隶属于叩甲科中的叩甲亚科Ｅｌａｔｅｒｉｎａｅ,由Ｆｌｅｕｔｉａｕｘ１９３９年建立,模式种为ＡｇｏｎｉｓｃｈｉｕｓａｌｔｕｓＣａｎｄｅｚｅ,全世界已...     

辽西中侏罗统海房沟组叩甲(鞘翅目:叩甲科)化石一新属

文章描述产自辽宁省北票市姜家沟中侏罗统海房沟组的叩甲化石1新属1新种,Sinolithomerus dolini gen.et sp.nov.,归入原槽缝叩甲亚科(Protagrypninae)。叩甲科化石最早发现于早侏罗世,侏罗纪是叩甲昆虫演化发展的重要阶段,在中侏罗世至晚侏罗世早期产生明显的辐射演化。晚侏罗世以前叩甲化石目前很少报道,而笔者最近几年在内蒙古道虎沟中侏罗统九龙山组发现了大量叩甲化石。因此,海房沟组叩甲化石的发现,对叩甲早期多样性、古地理分布以及地层对比提供了依据。     

辽西中侏罗统海房沟组叩甲(鞘翅目:叩甲科)化石-新属

文章描述产自辽宁省北票市姜家沟中侏罗统海房沟组的叩甲化石1新属1新种,Sinolithomerus dolini gen．etsp．nov．,归入原槽缝叩甲亚科（Protagrypninae）。叩甲科化石最早发现于早侏罗世,侏罗纪是叩甲昆虫演化发展的重要阶段,在中侏罗世至晚侏罗世早期产生明显的辐射演化。晚侏罗世以前叩甲化石目前很少报道,而笔者最近几年在内蒙古道虎沟中侏罗统九龙山组发现了大量叩甲化石。因此,海房沟组叩甲化石的发现,对叩甲早期多样性、古地理分布以及地层对比提供了依据。     

中国丽叩甲属的新种新纪录（鞘翅目：叩甲科）

丽叩甲属Campsosternus是叩甲科中较大形而且十分美丽的一个类群,全身具有明亮的金属光泽,很易识别。该属由法国Latreille 1834年建立,属模种为C.auratus(Drury);在此之前,所发表的丽叩甲种类大多归属在当时的叩甲属Elater中。十九世纪下半叶法国学者Candeze在他的叩甲专著中将这个类群归属在绒鳞叩甲族Chalcolepidiides中,大多数学者沿用了这一系统,并进行了适当的调整,将绒鳞叩甲族上升为绒鳞叩甲亚科Chalcolepidiinae。Fleutiaux 1927年将丽叩甲属从绒鳞叩甲亚     

中国叩甲科一新记录

四叶叩甲属Tetralobus lepeletier是叩甲科中体形最大的一个属,全世界已知49种,绝大部分分布于非洲,少数几种分布在澳洲,亚洲仅记录3种,分别分布在越南、印度和新加坡,作者发现其中一种巨四叶叩甲T.perroti Fleutiaux在我国四川也有分布,为中国新记录属种。属征体极大型,宽厚;唇基长宽,向上与额交接成直角或锐角。触角1.1节:雄性扇状,即从第4节开始各节侧生有一宽叶片;雌性锯齿状,第2、3节相当小。小盾片三角形。鞘翅长而宽。后胸腹板大,前侧片宽,后侧片明显;后基片近于平行,后缘波状。跗节逐节增长,第1—4节腹面具有宽大的叶片。种征体长…     

<中国经济叩甲图志>

该书为华中农业大学副教授江世宏博士与中国科学院动物研究所高级工程师王书永先生合著,1999年12月由中国农业出版社出版,16开本,195页.     

Syringa species: molecular marking of species and cultivars

RAPD analysis was carried out with 22 accessions of the genus Syringa, including six species, one interspecific hybrid, and 15 cultivars. In total, 500 polymorphic fragments were detected; species-specific and cultivar-specific markers were identified. For the first time, genetic polymorphism and genome similarity coefficients were estimated and phylogenetic relationships were established for the genus Syringa.     

Helminth species diversity of mammals: parasite species richness is a host species attribute

Studies investigating parasite diversity have shown substantial geographical variation in parasite species richness. Most of these studies have, however, adopted a local scale approach, which may have masked more general patterns. Recent studies have shown that ectoparasite species richness in mammals seems highly repeatable among populations of the same mammal host species at a regional scale. In light of these new studies we have reinvestigated the case of parasitic helminths by using a large data set of parasites from mammal populations in 3 continents. We collected homogeneous data and demonstrated that helminth species richness is highly repeatable in mammals at a regional scale. Our results highlight the strong influence of host identity in parasite species richness and call for future research linking helminth species found in a given host to its ecology, immune defences and potential energetic trade-offs.     

英国的侧盘菌属:属的概况及大型孢子种的研究(英文)

对侧盘菌属在英国的研究概况进行了评述,研究侧重于Otidea apophysata和O.platyspora两个具有大型子囊孢子的种。同时,对4个错误地用于大型孢子种的名称进行了订正:O. abietina(Pseudotis属的模式种)是含糊名称(nomen ambiguum);O.cochleata也为含糊名称;O. felina是O.alutacea的同物异名,并为后者指定了选模式;将O.umbrina处理为O.bufonia的同物异名。此外,确定了Otidea violacea的分类地位。     

Review: Other Helicobacter species

This article is a review of the most important, accessible, and relevant literature published between April 2018 and April 2019 in the field of Helicobacter species other than Helicobacter pylori. The initial part of the review covers new insights regarding the presence of gastric and enterohepatic non‐H. pylori Helicobacter species (NHPH) in humans and animals, while the subsequent section focuses on the progress in our understanding of the pathogenicity and evolution of these species. Over the last year, relatively few cases of gastric NHPH infections in humans were published, with most NHPH infections being attributed to enterohepatic Helicobacters. A novel species, designated “Helicobacter caesarodunensis,” was isolated from the blood of a febrile patient and numerous cases of human Helicobacter cinaedi infections underlined this species as a true emerging pathogen. With regard to NHPH in animals, canine/feline gastric NHPH cause little or no harm in their natural host; however they can become opportunistic when translocated to the hepatobiliary tract. The role of enterohepatic Helicobacter species in colorectal tumors in pets has also been highlighted. Several studies in rodent models have further elucidated the mechanisms underlying the development of NHPH‐related disease, and the extra‐gastric effects of a Helicobacter suis infection on brain homeostasis was also studied. Comparative genomics facilitated a breakthrough in the evolutionary history of Helicobacter in general and NHPH in particular. Investigation of the genome of Helicobacter apodemus revealed particular traits with regard to its virulence factors. A range of compounds including mulberries, dietary fiber, ginseng, and avian eggs which target the gut microbiota have also been shown to affect Helicobacter growth, with a potential therapeutic utilization and increase in survival.     

Opinion: Re-evaluating prokaryotic species

There is no widely accepted concept of species for prokaryotes, and assignment of isolates to species is based on measures of phenotypic or genome similarity. The current methods for defining prokaryotic species are inadequate and incapable of keeping pace with the levels of diversity that are being uncovered in nature. Prokaryotic taxonomy is being influenced by advances in microbial population genetics, ecology and genomics, and by the ease with which sequence data can be obtained. Here, we review the classical approaches to prokaryotic species definition and discuss the current and future impact of multilocus nucleotide-sequence-based approaches to prokaryotic systematics. We also consider the potential, and difficulties, of assigning species status to biologically or ecologically meaningful sequence clusters.     

Vesper: Visualising species archives

Vesper (Visual Exploration of SPEcies-referenced Repositories) is a tool that visualises Darwin Core Archive (DwC-A) datasets, and is aimed at reducing the amount of time and effort expended by biologists to ascertain the quality of data they are generating or using. Currently, DwC-A quality checking is limited to table outputs of data ‘existence’ and compliance with DwC-A format guidelines via the online DwC-A archive validator and reader. Whilst these tools thoroughly examine the presence of data, and the correctness of data structure against the DwC-A schema, they do not give any insight into the underlying quality of the data itself.Built on top of the D3 JavaScript library, Vesper analyses and displays DwC-A datasets in three fundamental dimensions—taxonomic, geographic and temporal—with a visualisation dedicated to each of these aspects of the data. By viewing a dataset's composition in these dimensions, a data consumer can judge whether it is suitable for the tasks or analyses they have in mind, whilst a data provider can identify where a dataset they've constructed may fall short in terms of data quality i.e. does it contain data that is obviously incorrect such as the classic longitude inversion that places North American specimens in China. A further visualisation of the taxonomic dimension can reveal the subtaxa distribution of reference taxonomies—whilst a simple table reveals the presence or not of certain data types for each record to give an overall data ‘existence’ profile for the dataset. Selections of parts of a dataset within one visualisation are linked to the other visualisation displays for that dataset, permitting the discovery of whether data quality issues are restricted to identifiable sub-portions of the dataset.Vesper can handle client-side data sets of a million entities within a browser by judicious use of data filtering, as many of the data types within individual records are not necessary to judge the geographic, temporal or taxonomic distribution and extent of a dataset. Thus, many of the more verbose fields in the file can simply be passed over during an initial data decompression stage. Furthermore it can provide limited name and structure matching of a dataset against DwC-A packaged reference taxonomies to indicate data quality relative to sources outside the archive. A selection of annotated example scenarios shows how Vesper can reveal data quality issues in DwC-A archives.     

Wind dispersal of alpine plant species: A comparison with lowland species

Question: The prominent role of wind dispersal in alpine habitats has been recognized early but has rarely been quantified. The aim of this study is to compare wind dispersal under alpine and lowland conditions and to analyse whether differences are caused by species traits, e.g. terminal velocity of seeds (V_term) or weather conditions. Location and Methods: We characterized wind dispersal potential of > 1100 Central European species using measured V_term To quantify the habitat effect on wind dispersal, we measured meteorological key‐parameters and simulated dispersal distance spectra of nine selected species under typical alpine conditions (foreland of the Scaletta‐glacier, Switzerland) and typical lowland conditions (grassland in Bad Lippspringe, Germany). Results: Lowland species had higher V_term compared to alpine species. However, this difference is absent when only species of species of open habitats are concerned. The meteorological measurements showed that the alpine habitat was mainly characterized by higher frequency and strength of updrafts. The simulations showed that under alpine conditions long distance dispersal occurred much more frequent. Conclusions: More than 50 % of the alpine species have a fair chance to be dispersed by wind over long distances, while this proportion is less than 25 % for species from open habitats in the lowland. The more prominent role of wind dispersal in alpine habitats is mainly a result of differences in environmental conditions, namely more intense vertical turbulence in the alpine habitat, and does not result from prominent differences in plant traits, namely V_term, between alpine and lowland species.