中国五种蜉金龟幼虫形态记述(鞘翅目,金龟科,蜉金龟亚科)

基于3龄幼虫首次描述了中国5种蜉金龟幼虫的形态特征,分别是:方胸蜉金龟 Aphodius quadratus Reiche、黄缘蜉金龟 A.sublimbatus Motschulsky、直蜉金龟 A.rectus Motschulsky、游荡蜉金龟 A.erraticus(Linnaeus)(补充描记).文中列出了中国蜉金龟幼虫的分种检索表.主要鉴别特征是:头部、内唇和臀节等.     

中国蜉金龟属—新种记述（鞘翅目：蜉金龟科）

报道采自新疆东昆化山蜉金龟属Aphodius Illiger1新种－卡尔洞蜉金龟Aphodius(Volinux)kardonensis,sp.nov.。模式标本保存在新疆大学生物质。     

直蜉金龟三龄幼虫形态学研究

直蜉金龟Phaeaphodius rectus(Motschulsky)是一种常见的粪食性甲虫,广泛分布于亚洲东部地区,其幼虫粪食性,对降解牲畜粪便具有重要意义。本研究通过采集和人工饲养获得了直蜉金龟卵、幼虫和蛹,运用扫描电子显微技术,对直蜉金龟3龄幼虫进行了形态观察。直蜉金龟3龄幼虫具有一系列特殊的超微形态特征,包括:内唇前惊刺由三叉状、二叉状及独立不分叉的3种惊刺组成;端感区具有一对三瓣状感器;覆毛区钩状刚毛形态为片状。     

埃蜉属一新种

在海南省琼中县、除水县和乐东县发现蜉属一新种,定名为海南蜉Ｅｐｈｏｒ ｈａｉｎａｎｅｎｓｉｓ ｓｐ,ｎｏｖ。新种与广泛分布于欧洲、亚洲北部,相近似,但新种前翅ＭＡ脉分支占不与Ｒｓ脉第２次分支点位于同一纵线上,面在Ｒｓ脉第２次分支点之后,贞洁多脉蜉的前支ＭＡ脉分支与Ｒｓ脉第２次分支点位于同一纵线上,两者有明显的区别．     

中国蓝盾异丽金龟种组及其分类问题讨论（鞘翅目：丽金龟科）

本文根据主要外部形态和雌雄外生殖器的相似程度引用为亲缘远近度的参照,将异丽金龟属中的蓝盾异丽金龟（Ａｎｏｍａｌａ ｓｅｍｉｃａｔａｎｅａ Ｆａｉｒｍａｉｒｅ）、红翅异丽金龟（Ａ．ｒｕｆｉｔｈｏｒａｘ Ｏｈａｕｓ）、石门异丽金龟（Ａ．ｓｈｉｍｅｎｅｎｓｉｓ ｓｐ．ｎｏｖ．）、砖红异丽金龟（Ａ．ｉｎｓｕｌｉｃｏｌａ ｓｐ．ｎｏｖ）和墨背异丽金龟（Ａ．ａｔｒｏｖｉｒｅｎｓ ｓｐ．ｎｏｖ．）种设为蓝背异丽     

中国桂毛异丽金龟物种群及其分类问题讨论：鞘翅目;丽金龟科

桂毛异丽金龟物种群（Ａｎｏｍａｌａｈｉｒｓｕｔｕｌａｓｐｅｃｉｅｓｇｒｏｕｐ）是山居类群,外部形态彼此十分近似,容易混淆。体型中等,全体被不甚密可见红褐底色的短毛,背面刻点甚密,鞘翅背面有６条深沟行,行距圆脊状隆起。本篇包括国内迄今已知种类１５种,其中新种１０种,新异名１种,新纪录３种,恢复原种名１种。篇内对旧种的分类间题进行了讨论。种名有：闽毛异丽金龟Ａ．ｈｉｒｓｕｔｎｄｅｓｓｐ．ｎｏｖ,桂毛异丽金龟Ａ．ｈｉｒｓｕｔｕｌａＮｏｎｆｒｉｅｄ,湘毛异丽金龟Ａ．ｔｒｉｃｈｏｐｈｏｒａｓｐ．ｎｏｖ．,赣毛异丽金龟Ａ．ｍｏｎｔａｎａｓｐ．ｎｏｖ．,川毛异丽金龟Ａ．ｐｉｌｏｅｌｌａＦａｉｒｍａｉｒｅ,黔毛异丽金龟Ａ．ｓｕｂｐｉｌｏｓａｓｐ．ｎｏｖ,长毛异丽金龟Ａ．ｓｕｂｔｒｉｎａｔａｓｐ．ｎｏｖ,叉毛异丽金龟Ａ．ｓｕｂｔｏｍｅｎｔｅｌｌａｓｐ．ｎｏｖ,疣毛异丽金龟Ａ．ｐｌａｎｉｃａｕｄａｓｐ．ｎｏｖ,云毛异丽金龟Ａ．ｉｗａｓｅｉＭｉｙａｋｅ,斧毛异丽金龟Ａ．ｓａｐａＭｉｙａｋｅ,缅毛异丽金龟Ａ．ｌｉｇｎｅａＡｒｒｏｗ,脊毛异丽金龟Ａ．ｃａｐｉｌｌｕｌａｓｐ．ｎｏｖ,短毛异丽金龟Ａ．ｂｒｅｖｉｈｉｒｔａｓｐ．ｎｏｖ．和     

弯握蜉属在中国首次发现及一新种记述（蜉蝣目：小蜉科）

本文报道弯握蜉属Ｄｒｕｎｅｌｌａ在中国的首次发现,并对该属一新种抚松弯握蜉Ｄｒｕｎｅｌｌａ ｆｕｓｏｎｇｅｎｓｉｓ ｓｐ．ｎｏｖ．作了详细描述。模式标本采自吉林省抚松县,正模♂,配模♀,副模６♂♂,２９♀♀,存放在南京师范大学生物系。弯握蜉属系Ｎｅｅｄｈａｍ于１９０５年建立,迄今属中共有４０种左右。其雄成虫的主要特征是：（１）生殖器尾铗的端节长度为宽度的２－４倍;（２）尾铗第２节最长,且明显向内弯     

索鳃金龟属四新种记述（鞘翅目：鳃金龟科）

本文记述了索鳃金龟属ＳｏｐｈｒｏｐｓＦａｉｒｍａｉｒｅ４新种,无距索鳃金龟Ｓ．ａｃｄｌｃａｒｉｕｍ,细体索鳃金龟Ｓ．ｓｔｅｎｏｃｏｒｐｕｓ,粉臀索鳃金龟,Ｓ．ｐｒｕｉｎｏｓｉｐｙｇａ和漾濞索鳃金龟Ｓ．ｙａｎｇｂｉｅｎｓｉｓ。模式标本保存在沈阳农业大学植保系昆虫标本室。     

中国异丽金龟属一新种（鞘翅目：丽金龟科）

记述采自陕西、河南两地,与黄褐异丽金龟（Ａｎｏｍａｌａ ｅｘｏｌｅｔａ Ｆａｌｄｅｒｍａｎｎ）近缘、形态相似的１新种;褐色异丽金龟Ａｎｏｍａｌａ ｅｘｏｌｅｉｏｉｄｅｓ ｓｐ．ｎｏｖ．。模式标本分别在西北农林科技大学昆虫博物馆和中国科学院动物研究所。     

小蜉属小蜉亚属一新种：蜉蝣目：小蜉科

本文记述小蜉属小蜉亚属 subgenus Ephemerella Walsh 一新种,小蜉亚属种类多,全世界已知有40种左右,广布于北美、苏联、日本等国,但中国尚未发现,因此本文也是小蜉亚属在中国的首次报道。     

Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis

It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.     

A Unique Protease Cleavage Site Predicted in the Spike Protein of the Novel Pneumonia Coronavirus (2019-nCoV) Potentially Related to Viral Transmissibility

正Dear Editor,In December 2019, a novel human coronavirus caused an epidemic of severe pneumonia(Coronavirus Disease 2019,COVID-19) in Wuhan, Hubei, China(Wu et al. 2020; Zhu et al. 2020). So far, this virus has spread to all areas of China and even to other countries. The epidemic has caused 67,102 confirmed infections with 1526 fatal cases     

Curcuminoids as inhibitors of thioredoxin reductase: A receptor based pharmacophore study with distance mapping of the active site

Curcumin is the yellow pigment of turmeric that interacts irreversibly forming an adduct with thioredoxin reductase (TrxR), an enzyme responsible for redox control of cell and defence against oxidative stress. Docking at both the active sites of TrxR was performed to compare the potency of three naturally occurring curcuminoids, namely curcumin, demethoxy curcumin and bis-demethoxy curcumin. Results show that active sites of TrxR occur at the junction of E and F chains. Volume and area of both cavities is predicted. It has been concluded by distance mapping of the most active conformations that Se atom of catalytic residue SeCYS498, is at a distance of 3.56 from C13 of demethoxy curcumin at the E chain active site, whereas C13 carbon atom forms adduct with Se atom of SeCys 498. We report that at least one methoxy group in curcuminoids is necessary for interation with catalytic residues of thioredoxin. Pharmacophore of both active sites of the TrxR receptor for curcumin and demethoxy curcumin molecules has been drawn and proposed for design and synthesis of most probable potent antiproliferative synthetic drugs.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.