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:     

中国四川有瓣蝇类四新种(双翅目:厕蝇科,蝇科,丽蝇科)

记述分布于中国四川西部的有瓣蝇类中的4新种：天府枵蝇Coelomyia tianfuensis sp．nov．(厕蝇科);蜀圆蝇Mydaea shuensis sp．nov(蝇科);中华重毫蝇Dichaetomyla sinica sp．nov(蝇科);西部变丽蝇Paradichosia xibuica sp．nov(丽蝇科)。模式标本存中国科学院上海生命科学研究院,植物生理生态研究所。     

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.