青海省蚱属一新种记述(直翅目,蚱科)

记述采自青海省蚱属1新种,即黑胫蚱Tetrix nigrotibialis sp.nov.。新种近似于二斑蚱Tetrix bipunctata(Linnaeus)及拟二斑蚱Tetrixparabi punctata Zheng,其与上述2种的主要区别:1)前胸背板前缘平直;2)触角长于前足股节长的1.3倍;3)侧面观前胸背板上缘弧形隆起,中部平直;4)肩部之间不具1对短纵隆线;5)前胸背板后突到达后足股节顶端;6)后足股节下侧及后足胫节黑色。模式标本保存于陕西师范大学动物研究所昆虫标本室(正模)及青海师范大学生命与地理科学学院(副模)。     

广西九万山地区蚱属一新种(直翅目:蚱总科)

记述采自广西九万山地区蚱科蚱属Tetrix昆虫1新种,即断隆蚱Tetrix interrupta sp.nov..该新种近似于金沙江蚱Tetrix jinshajiangensis Zheng,2001,主要区别为:(1)头顶前缘平直,不突出于复眼之前;(2)触角着生于复眼下缘之下;(3)肩部之间不具一对短纵隆线;(4)中足股节下缘近平直,密具细毛;(5)中足股节的宽度与前翅能见部分的宽度相等;(6)后足股节上侧中隆线具较大的锯齿.模式标本保存在陕西师范大学动物研究所标本室.     

河南蚱属二新种记述(直翅目:蚱科)

记述采自河南省蚱科二新种,即鸡公山蚱Tetrix jigongshanensis sp. nov.和突背蚱Tetrix glochinota sp. nov..鸡公山蚱近似于凹额蚱Tetrix cavifrontalis Liang, 1998, 主要区别为:1)头顶前缘平直;2)侧面观,头顶与额面隆起呈钝角形;3)侧面观,额面隆在侧单眼前直,不凹陷;4)侧观,前胸背板上缘呈弧形;5)前胸背板前缘钝角形突出;6)后突到达后足股节中部;7)后翅略不到达后突顶端;8)中足股节明显宽于前翅宽.突背蚱近似于仿蚱Tetrix simulans(B.-Bienko, 1929)及云龙蚱Tetrix yunlongensis Zheng et Mao, 2002, 其与二者的区别为:1)头顶前缘平直;2)侧面观,背板上缘前半部球形突出,后半段平直;3)后突到达后足股节顶端.其区别于前者为:1)侧面观,额面隆起在侧单眼前凹陷;2)中足股节宽于前翅等宽.其区别于后者为头顶宽为一眼宽的1.7倍.模式标本保存于陕西师范大学动物研究所昆虫标本室.     

甘肃省蚱科--新种记述(直翅目:蚱总科)

记述了采自甘肃省蚱科一新种,即圆肩蚱（Tetrix tereeshumerus sp．nov．）。该新种近似于神农架蚱（Tetrix shenglonjiaensis Zheng,Li and Wei）,主要区别为：（1）头顶宽为1眼宽的2倍;（2）头顶前缘圆弧形,明显突出于眼前;（3）侧面观,颜面隆起在侧单眼前直;（4）前胸背板后突到达后足股节2／3处;（5）沟前区侧隆线平行;（6）肩角圆弧形;（7）肩部之间不具一对短纵隆线;（8）后翅到达后足股节中部;（9）中足股节明显大于前翅宽;（10）雌性下生殖板长大于宽。新种的模式标本保存于陕西师范大学动物研究所。     

中国悠背蚱属一新种记述(直翅目,蚱总科,蚱科)

记述采自广西九万山地区悠背蚱属1新种,即拟毛股悠背蚱,新种 Euparatettix barbifemuraoides sp.nov..模式标本保存在陕西师范大学动物研究所标本室.拟毛股悠背蚱.新种 Euparatettix barbifemuraoides sp.nov.(图1～2)新种近似于Euparatettix gongshanensis Zheng,1992,主要区别为:1)头顶前缘不突出于复眼之前;2)沟前区侧隆线向后收缩;3)前胸背板侧缘在肩后略收缩;4)前足及中足股节下缘多长毛.新种与毛股悠背蚱Euparatettix barbifenura Zheng et Ou,2003,相似,但它的前胸背板后突超过后足股节的顶端及后翅超过前胸背板后突的顶端.正模♂,广西罗城(九万山),700m,2006-07-21,邓维安采;副模3♂♂;广西罗城(九万山),500m,2007-06-08.秦晶晶采.     

广西玛蚱属一新种记述(直翅目:蚱总科:短翼蚱科)

记述采自广西巴马地区短翼蚱科玛蚱属Mazarredia Bolivar昆虫1新种,即巴马玛蚱Mazarredia bamaensissp.nov.。该新种近似于黑石顶玛蚱Mazarredia heishidingensis ZhengetX ie,主要区别为:(1)侧面观颜面隆起与头顶成圆形;(2)颜面隆起纵沟狭于触角基节的宽度;(3)背板后突到达后足胫节1/3处;(4)背板侧缘在肩后略收缩;(5)侧面观背板上缘全长呈波状;(6)第1跗节下3个肉垫顶尖。模式标本保存在陕西师范大学动物研究所标本室(2♂)和河池学院动物标本室(1♂)。     

云南省尖顶蚱属二新种（直翅目：蚱科）

记述采自云南省高黎贡山地区尖顶蚱属 Teredorus Hancock 2 新种,即拟短背尖顶蚱 T. brachinotoides, sp. nov. 及周氏尖顶蚱 T. choui sp. nov.。拟短背尖顶蚱近似于短背尖顶蚱,主要区别为:1)体长为体宽的 2.42-2.70 倍;2)侧面观颜面隆起在侧单眼前略凹陷;3)前胸背板总长超过后足股节顶端部分长的9.35倍;4)后足股节内侧黄褐色,基部黑色;5)后足股节下侧内面黄褐色,具2黑斑,外面黑色;6)腹部腹板黄褐色。周氏尖顶蚱近似于白边尖顶蚱,主要区别为:1)前胸背板后突超过后足股节顶端部分长3.50-4.00 mm(♂)或 2.80-3.00 mm(♀);2)前翅长为宽的2.50倍;3)中足股节宽与前翅等宽;4)前胸背板中隆线黑白相间;5)前胸背板侧面色与背板同色;6)后足股节下侧非黑色;7)后足股节内侧黑色。文中附有尖顶蚱属已知种检索表。新种的模式标本保存于陕西师范大学动物研究所昆虫标本室。     

中国浙江尖顶蚱属一新种记述(直翅目,蚱总科,蚱科)

记述采自浙江临安地区尖顶蚱属Teredorus 1 新种,黑翅尖顶蚱Teredorus nigropennis sp.nov..模式标本保存在陕西师范大学动物所标本室(3♀♀).黑翅尖顶蚱,新种Teredorus nigropennis sp.nov.(图1～3)本种与巴山尖顶蚱Teredorus bashanensis Zheng,1993相似,主要区别:侧面观,背板上缘肩前略波状,肩后平直;前胸背板后突到达后足胫节中部,前胸背板总长为超出后足股节顶端部分长的4.7倍;前翅长为宽的3.0倍;后翅到达后突的顶端;中足股节的宽度狭于前翅能见部分的宽度.正模♀,浙江临安(清凉峰),海拔950 m,2012-06-20,陆春文采.副模2♀♀,同正模.     

云南省突眼蚱属一新种（直翅目：蚱科）

记述采自云南省突眼蚱属 1 新种,即龙陵突眼蚱 Ergatettix longlingensis sp. nov.。该新种近似于拟齿股突眼蚱。主要区别为:1)触角着生于复眼下缘之下;2)前胸背板沟前区侧隆线略收缩;3)前胸背板后突到达后足股节顶端;4)后翅到达后突顶端;5)后足股节上侧中隆线具二叶状突;6)后足股节下侧外面非黑色;7)后足胫节暗褐色。文中附有中国突眼蚱属分种检索表。模式标本现保存于陕西师范大学动物研究所昆虫标本室。     

中国贵州赫蚱属一新种记述(直翅目,蚱总科,刺翼蚱科)

记述采自贵州施秉赫蚱属Hebarditettix 1 新种,短背赫蚱Hebarditettix brachynotus sp.nov.,并附有分种检索表.模式标本保存在陕西师范大学动物所标本室(2♀♀).短背赫蚱,新种Hebarditettix brachynotus sp.nov.(图1～4)新种与长背赫蚱Hebarditettix dolichonota Zheng,2008相似,主要区别:前胸背板侧片后角横向伸出;侧面观前胸背板上缘平直;后突短,到达后足胫节的前1/3处;前足股节下缘略波状,下缘后半部具1列小齿突;后足跗节第1节与第3节等长.正模♀,贵州施秉(云台山),海拔950 m,2012-08-09,邓维安采.副模1♀,同正模.     

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.