毒隐翅虫与隐翅虫皮炎

<正> 鞘翅目隐翅虫科毒隐翅虫属(Paederus)一些种类的体液有毒,与人的皮肤接触后会引起隐翅虫皮炎(Paederus dermatitis)或称线状皮炎(Dermatitis linearis)。世界上许多地方如非     

中国并线隐翅虫属－新种及－新纪录（鞘翅目：隐翅虫科：胸片隐翅虫亚科）

本文报道中国并线隐翅虫属一新种,黑腹并线隐翅虫Ｎｕｄｏｂｉｕｓｎｉｇｒｉｖｅｎｔｒｉｓｓｐ．ｎｏｖ．,一新纪录种,红鞘并线隐翅虫Ｎｕｄｏｂｉｕｓｌｅｎｔｕｓ（Ｇｒａｖｅｎｈｏｒｓｔ）。     

中国并线隐翅虫属一新种及一新纪录（鞘翅目：隐翅虫科：胸片隐翅虫亚科）

本文报道中国并线隐翅虫属一新种，黑腹并线隐翅虫一新纪录种，红鞘并线隐翅虫。     

中国圆胸隐翅虫属一新种记述（鞘翅目：隐翅虫科：尖腹隐翅虫亚科）

记述采自我国四川省九寨沟和湖北省神农架自然保护区的圆胸隐翅虫属Tachinus,圆胸隐翅虫亚属Tachinus 1新种——东洋圆胸隐翅虫Tachinus(Tachinus)parasibiricus,sp．nov．。该新种与分布于古北区的Tachinus(Tachinus)sibiricusSharp,1888在颜色和外部形态上很相似,但根据雄性生殖器侧叶近端部无缢痕,端部l／3处明显变厚;雌性第8背板中叶之间凹入明显较浅等特征可与后者区分。正模：♂,四川省九寨沟,2001-Ⅶ-27,李利珍、赵梅君采。副模：7♂♂9♀♀,同正模;2♂♂,湖北省神农架金猴岭,2002-Ⅷ-04,李利珍、汤亮采。模式标本保存在上海师范大学生命与环境科学学院生物系昆虫标本室。     

四川瓣隐翅虫属一新种(鞘翊目：隐翅虫科，胸片隐翅虫亚科)

四川瓣隐翅虫属一新种（鞘翅目：隐翅虫科,胸片隐翅虫亚科）郑发科（四川师范学院生物系南充６３７００２）瓣隐翅虫属（ＧｙｒｏｈｙＰｎ。）由Ｓａｍｏｕｅｌｌｅ（１８１９）建立,模式种为ＧｙｒｏｈｙＰｎ。ｓｌｒａ·ｃｌｉｃｏｒｎｉ。（Ｍｈｌｌｅｒ,１７７６）...     

中国直缝隐翅虫属的新种与新纪录(鞘翅目：隐翅虫科，胸片隐翅虫亚科)

This paper reports 6 new species and 1 new record of the genus Othiur:Stephens from China. Key to the known species is given. All type specimens are deposited in the Department of Biology, Sichuan Teachers College.     

Quadruplexes of human telomere DNA analogs designed to contain G:A:G:A,G:G:A:A,and A:A:A:A tetrads

Replacement of two to four guanines by adenines in the human telomere DNA repeat dG₃(TTAG₃)₃ did not hinder the formation of quadruplexes if the substitutions took place in the terminal tetrad bridged by the diagonal loop of the intramolecular antiparallel three‐tetrad scaffold, as proved by CD and PAGE in both Na⁺ and K⁺ solutions. Thermodynamic data showed that, in Na⁺ solution, the dG₃(TTAG₃)₃ quadruplex was destabilized, the least by the two G:A:G:A tetrads, the most by the G:G:A:A tetrad in which the adenosines replaced syn‐guanosines. In physiological K⁺ solution, the highest destabilization was caused by the 4A tetrad. In K⁺, only the unmodified dG₃(TTAG₃)₃ quadruplex rearranged into a K⁺‐dependent quadruplex form, none of the multiple adenine‐modified structures did so. This may imply biological consequences for nonrepaired A‐for‐G mutations. © 2010 Wiley Periodicals, Inc. Biopolymers 93: 880–886, 2010.