中国蝇科和麻蝇科新纪录

在整理锦州地区的蝇类标本中,发现蝇科、麻蝇科计6种系国内新纪录:1.胸刺厕蝇 Fannia fuscula Macq.,1835 辽宁省(北镇县1)2.六痣秽蝇 Coenosia sexnotata Meigen,1826     

中国花蝇科和厕蝇科新纪录

整理作者在山西省雁北地区采集的蝇总科标本中,发现五种系国内新纪录,名录如下:拟瘦端地种蝇Delia dovreensis Ringdahl,1954 采集地:山西广灵(上白羊2,1980.8.9)细叶叉泉蝇Eutrichota praeclara(Stein,1914) 采集地:山西平鲁(只泥泉1,1980.9.3)直角泉种蝇Pegohylemyia rectangularis Ringdahl,1952 采集地:山西广灵(上白羊1,1980.8.9)     

陕西省花蝇科和蝇科国内新纪录

在陕西省秦岭太白山蝇类垂直分布调查中,发现花蝇科和蝇科三种系国内新纪录: 1.巴勒众蝇 Pegomya palaestinensis Hennig, 19731.陕西省太白山(大殿,海拔2,500米,1982.8)。     

中国蝇科阳蝇属新纪录

整理作者采集和保存的蝇科标本,发现阳蝇属4种系国内新纪录: 1.斑翅阳蝇Helina maculipennis(Zett., 1845) 2♂♂,吉林省长白山,1986年7月23日采。 2.裸股阳蝇Helina nadifemorata Hennig,1952     

中国花蝇科及蝇科三新种一新亚种

本文记述中国花蝇科及蝇科三新种及一新亚种。除第二种外,各新种或新亚种模式标本均存上海昆虫研究所。 花蝇科 1.黑胸拟花蝇 Calythea atra Fan新种(图1,2) 体长4.0毫米。头黑色。眼:高约为长的1(1/2),有少数很微的毛。额最狭处间额消失,侧额如线,仅前方1/2长度内有额鬃,间额鬃长,间额及沿侧额鬃列一线黑色。头前面粉被略带银色的灰色。触角黑,第三节为第二节的1(1/2)倍,芒基部半段有很短的毳毛。侧颜裸,狭于触角第三节的宽,颜鬃长大,髭在口缘一线,口上片明显。颊高约为眼高     

蝇科国内新纪录

整理作者采集和保存的蝇科标本,发现28种系国内新纪录:1.须厕蝇 Fannia barbata Stein 分布 辽宁省本溪市郊区(大峪),桓仁县。2.毛胸厕蝇 Fannia difficilis Stein 分布 辽宁省本溪县。3.刷股厕蝇 Fannia kowarzi (Verrall) 分布 辽宁省本溪县。4.小须厕蝇 Fannia minutipalpis(Stein) 分布 辽宁省本溪县。5.鬃胫厕蝇 Fannia nodulosa Ringd.分布 辽宁省本溪市郊区。6.拟刺厕蝇 Fannia sociella(Zett.)分布 辽宁省本溪市郊区(大峪),本溪县。     

中国蝇科新纪录

笔者在整理采自贵州山区的蝇类标本中,发现蝇科Muscidae二种为中国首次纪录,兹报道如下 1.新奇重毫蝇 Dichactomyia heteromma Emden,1965 安顺市(金钟山1♀,1984年6月19日);长顺县(广顺农场,哨上2♂♂1♀,1984年7月1日);紫云县(松山1♀,1984年7月12日);平坝县(沙子冲1♀,1984年6月4日;马场1♂,1984年6月21日);绥     

厦门丽蝇科麻蝇科及家蝇料记录

作者于1954年11月即开始采集蝇类,旋即中断,仅得常见种7种。至1956年5月又重新开始,迄1957年5月,共得蝇类39种,分隶于丽蝇、麻蝇及家蝇3科,今记录如下:     

四川西部蝇科三新种(双翅目：蝇科)

整理1979～1996年采自中国四川省西部的蝇类标本中,发现蝇科三新种：树棘蝇属 Potamia Robineau-Desvoidy, 1830一新种：鬃跗树棘蝇Potamia setitarsis sp. nov.; 胡蝇属 Drymeia Meigen,1826一新种：四川胡蝇Drymeia sichuanensis sp. nov; 池蝇属 Limnophora Robineau-Desvoidy, 1830一新种：灰黄池蝇 Limnophora cinerifulva sp. nov。模式标本存北京军事医学科学院医学昆虫标本馆。     

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.