白腹皮蠹的繁殖特性

本文研究了重庆地区为害动物食品的白腹皮蠹成虫的性比、交配、产卵期和次数以及产卵量。计算了内禀增长率等。     

中国皮蠹科四新记录种

1.十节毛皮蠹Attagenus schaefferi(Herbst)(图1) 体长3.2-5.3 mm,椭圆形。体壁黑色,少数个体暗褐色,触角及足黄褐色至暗褐色,身体背腹面被均一的黑色毛。复眼大而突出,暗褐色;触角10节,触角棒3节,雄虫触角末节长约为其余9节总长的1.5-2倍,雌虫触角末节稍长于第8、9节的总长。前胸背板后缘中叶显著后突。小盾片三角形。鞘翅无淡色毛斑。     

瘤长蠹属一新种(鞘翅目,长蠹科)

Pertyl832报道,将瘤长蠹属Dysides定为新属,只有暗瘤长蠹Dysides obscurus一种,Lesne(1921)将成虫背面观可见头部的Dysides和Apoleon属列入长蠹科Bostrichidae内,建立瘤长蠹亚科Dysidinae。本文介绍l新种尖瘤长蠹郎Dysides spineus sp．nov．的形态特征及列出该属2种的检索表。属的特征其中触角10节,末节长条形,前胸背板顶后有4颗大瘤突横向排列,其中两侧瘤较大(上述论文末提及)。     

拟鳞小蠹属一新种(鞘翅目:小蠹科)

Stephen L.Wood和黄复生1986报道（Stephen,1986）,将拟鳞小蠹属Pseudoxylechinus定为新属,包括5种。本文介绍1新种云杉拟鳞小蠹Pseudoxylechinus piceae sp.nov.的形态特征及列出该属6种的检索表。属的特征其中触角锤状部近基1/3处有一横向几丁质嵌隔（上述论文未提及）。     

一种饲养树皮小蠹的方法

<正> 开展树皮小蠹生物学研究,测定它们在特定温湿度条件下的发育速率、存活率和繁殖率等基本的生物学参数,需要对树皮小蠹进行饲养,并作连续观察。 然而,观察树皮小蠹的发育进度是比较困难的。每次检查,都要剥去树皮,破坏坑道,影     

进口竹藤中竹长蠹五近似种的鉴别(鞘翅目:长蠹科)

介绍了近年从进口竹藤检疫中多次截获的5种竹长蠹:双窝竹长蠹 Dinoderus bifoveolatus (Wollaston)、小竹长蠹D. brevis Horn、日本竹长蠹D. japonicus Lesne、竹长蠹D. minutus Fabricius及小点竹长蠹D. ocellari Stephens,分别介绍了头、前胸背板、鞘翅、腹面及足的主要鉴别特征,并编制了这5个近似种的检索表.     

小蠹属中国2新记录种记述

首次报道了采自新疆维吾尔自治区的小蠹属Scolytus Geoffroy,1762中国二新记录种：杏小蠹S. amygdali(Guérin,1847)和雅罗斯小蠹S. jaroschewskii(Schevyrew,1893),给出形态特征描述并提供多角度形态图片。标本现保存于江西农业大学入侵生物实验室。     

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.