地厉螨属一新种(蜱螨亚纲,厉螨科)

记述地厉螨属Dipolaelaps Zemskaya et Piontkovskaya,1960一新种:同心地厉螨Dipolaelaps tongxinensis Baiet Lu,sp.nov.,标本采自宁夏回族自治区同心县阿拉善黄鼠Citellus alaschanicus Buchner,1888巢穴内.模式标本均保存于军事医学科学院微生物流行病研究所医学昆虫标本馆和宁夏回族自治区疾病预防控制中心.     

宁夏革螨二新种记述(蜱螨亚纲,革螨股)

记述厉螨科Laelapidae Berlese地厉螨属Dipolaelaps Zemskaya et Piontkovskaya,19601新种:顾氏地厉螨Dipolaelaps guyimingi Bai,Yan et Wei,sp.nov.和裂胸螨科Aceosejidae Sellnick肛厉螨属Proctolaelaps Berlese,19231新种:六盘山肛厉螨Proctolaelaps liupanshanensis Bai,Yan et Qi,sp.nov.,标本采自宁夏六盘山自然保护区,模式标本保存于军事医学科学院微生物流行病研究所昆虫标本馆(北京)。     

青海省厉螨属一新种(蜱螨亚纲:厉螨科)

记述厉螨属Laelaps Koch,1836一新种,即匙形厉螨Laelaps cochlearis sp.nov.新种与近似种敏捷厉螨L.agilis Koch,1836进行了比较,标本采自青海省民和县古鄯林场的大林姬鼠Apodemus speciosus。     

青海血厉螨属一新种(蜱螨亚纲,厉螨科)

记述厉螨科Laelapidae血厉螨属Haemolaelaps Berlese,1910一新种,长棒血厉螨,Haemolaelaps longirodus sp.nov..标本采自青海省黄南州同仁县红耳鼠兔体上,保存于青海省地方病预防控制所.文内测量单位均为μm.     

广厉螨属一新种(蜱螨亚纲,厉螨科)

记述厉螨科Lealapidae Berlese,1892广厉螨属Cosmolaelaps Berlese,1892 1新种,即网纹广厉螨Cosmolaelaps retirugi sp.nov..标本采自青海省西宁市湟中县总寨地区褐家鼠Rattus norvegicus体上.模式标本存放在青海省地方病预防控制所,文内测量单位均为μm.     

西藏自治区地厉螨属一新种(蜱螨亚纲:厉螨科)

本文记述了采自西藏聂拉木县樟木镇的革螨一新种－薄片地厉螨Ｄｉｐｏｌａｅｌａｐｓ ｈｉｓｔｉｓ ｓｐ．ｎｏｖ．模式标本保存于成都军区后勤部卫生防疫队。     

青海下盾螨属一新种记述(蜱螨亚纲,厉螨科)

记述厉螨科Lealapidae Berlese,1892下盾螨属Hypoaspis Canestrini,18851新种,即卵形下盾螨Hypoaspis ovatus sp.nov。标本采自青海省湟中县总寨地区灰仓鼠Cricetulus migratorius体上,模式标本存放在青海省地方病预防控制所,文内测量单位均为μm。     

青海真厉螨属一新种(蜱螨亚纲,中气门目,厉螨科)

记述我国真厉螨属一新种,即高原真厉螨Eulaelaps plateau sp.nov..新种近似于厩真厉螨Eulaelaps stabularis Koch,1836和拟厩真厉螨E.substabularis Yang et Gu,1986,模式标本采自青海省久治县和河南县的根田鼠Microtus oeconomus体外.     

宁夏血厉螨属一新种记述：蜱螨亚纲：厉螨科

本文记述采自宁夏海原县的血厉螨属１新种：脆弱血厉螨Ｈａｅｍｏｌａｅｌａｐｓｆｒａｇｉｌｉｓ,ｓｐ．ｎｏｖ。模式标本保存于宁夏回族自治区地方病防治所。     

中国土厉螨属一新种（蜱螨亚纲：厉螨科）

本文记述中国土厉螨属１新种,王氏土厉螨Ｏｌｏｌａｅｌｅｐｓｗａｎｇｉ,ｓｐ．ｎｏｖ,新种的模式标本保存在宁夏回族自治区地方病防治所。     

Selection with two alleles and complete dominance

For a plant selection model with frequency-independent viabilities, fertilities and selfing rates, it is shown that apart from global fixation, for certain parameter combinations a protected polymorphism and facultative fixation (either allele may become fixed according to initial frequencies) may both occur. Facultative fixation requires different selling rates for the dominant and recessive type. Protection of the polymorphism requires resource allocation for male and female function. In this connection the problem of purely genetically caused population extinction is discussed.
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment.     

杆状病毒出芽病毒粒子膜融合蛋白的研究进展

杆状病毒是一类感染节肢动物的病原微生物,其基因组为双链环状DNA,大小为80～180kb.     

Inception of the Modern Public Health System in China and Perspectives for Effective Control of Emerging Infectious Diseases: In Commemoration of the 140th Anniversary of the Birth of the Plague Fighter Dr. Wu Lien-Teh

In this article, we systematically review Dr. Wu Lien-Teh's academic achievements and outstanding contributions in the prevention and control of the plague epidemic in northeast China and introduce the development of the earliest public health epidemic prevention system in China in order to commemorate the 140th anniversary of Dr. Wu Lien-Teh's birth. We hope that this article will provide insights into the effective prevention and control of emerging infectious diseases as well as the current worldwide pandemic of COVID-19, facilitating the improvement and development of public health systems in China and around the globe.