中国瘿蚊科一新记录属及一新种

本文记述采自中国浙江省为害柿树的瘿蚊１新种,柿伪安瘿蚊Ｐｓｅｕｄａｓｐｈｏｎｄｙｌｉａｄｉｏｓｐｙｒｉ Ｍｏ ｅｔ Ｚｕ,ｓｐ．ｎ．。模式标本存放于山东农业大学昆虫标本室。     

中国异瘿蚊属分类研究(双翅目:瘿蚊科)

记述了中国瘿蚊科1新纪录属异瘿蚊属及一新种：横瓣异瘿蚊Heterogenella transversa.spn.nov.,模式产地云南中甸虎跳峡;中国3新纪录种;达氏异瘿蚊H.dolini Berest(四川理县米亚罗）,短须异瘿蚊H.hybrida Mamaev(内蒙古额尔古纳旗莫尔道嘎）和纵缝异瘿蚊H.linearis Yukawa(云南丽江玉龙山）。文中给出了异瘿蚊属中国已知种类分种检索表。模式标本保存于南开大学生物系昆虫标本室。     

中国瘿蚊科一新记录属及一新种(双翅目)

本文记述采自中国浙江省为害柿树的瘿蚊１新种：柿伪安瘿蚊ＰｓｅｕｄａｓｐｈｏｎｄｙｌｉａｄｉｏｓｐｙｒｉＭｏｅｔＸｕ,ｓｐ．ｎ．。模式标本存放于山东农业大学昆虫标本室。     

中国短角瘿蚊属记述 (双翅目：瘿蚊科)

记述了双翅目瘿蚊科短角瘿蚊属4种,其中郑氏短角瘿蚊Anarete zhengi sp.nov.（模式产地：内蒙古固阳县）为新种,短须短角瘿纹A.coracina (Zetterstedt）（分布：内蒙古）和鸢尾短角瘿蚊A.iridis (Cockerell）（分布：陕西,青海）为中国新纪录种。文中给出了短角瘿蚊属中国种类分种检索表。模式标本保存于南开大学生物系昆虫标本室。     

中国钩瘿蚊属分类研究(双翅目,瘿蚊科)

记述了中国鼓瘿蚊亚科钩瘿蚊属7种,其中2种:长角钩瘿蚊C.longicornis sp.nov.(模式产地:陕西凤县)、背折钩瘿蚊C.retrorsa sp.nov.(模式产地:云南屏边)为科学上的新种,另外5种:美丽钩瘿蚊C.formosa(Bremi)(分布:湖南、云南、吉林),日本钩瘿蚊C.mpponensis Yukawa(分布: 甘肃、四川、湖北),尖瓣钩瘿蚊C.hamata (Felt) (分布:湖南、贵州),狭眼钩瘿蚊C.neueitasis (Zetterstedt)(分布:甘肃)和锯齿钩瘿蚊C.serrata Yukawa (分布:陕西、甘肃、福建)为中国新纪录种.编制了钩瘿蚊属中国已知种种类检索表.模式标本保存于南开大学生物系昆虫标本室.     

中国扇瘿蚊属六新种(双翅目,瘿蚊科)

报道了双翅目瘿蚊科中国新纪录属:扇瘿蚊属Rhipidoxylomyia Mamaev 6新种,提出了1新组合:Rhipidoxylomyia concava(Yukawa),comb.nov,编制了扇瘿蚊属世界种类检索表.模式标本保存于南开大学生物系.     

中国棒瘿蚊属一新种（双翅目：瘿蚊科）

本文首次报道在我国发现的瘿蚊科树瘿纹亚科棒瘿蚊属及一新种,即半圆棒瘿蚊。模式标本存于南开大学生物系虫昆标本室。     

刺基瘿蚊属新种记述（双翅目：瘿蚊科）

本文记述瘿蚊科树瘿蚊亚科Ｌｅｓｔｒｅｍｉｉｎａｅ的刺基瘿蚊属ＡｐｒｉｏｎｕｓＫｉｅｆｆｅｒ的中国种类,并记述二新种,对刺基瘿蚊Ａｐｒｉｏｎｕｓｂｉｆｕｒｃａｔｕｓｓｐ．ｎｏｖ和钩刺基瘿蚊ＡｐｒｉｎｏｕｓＨａｍｕｌａｔｕｓｓｐ．ｎｏｖ。     

中国垫瘿蚊属研究(双翅目：瘿蚊科)

记述了双翅目瘿蚊科一中国新记录属垫瘿蚊属 Conarete Pritchard 的4 种,其中包括2新种： 短须垫瘿蚊 C. brevipalpa Li et Bu, sp. Nov.（模式产地： 海南尖峰岭）和葫茎垫瘿蚊 C. sicyoidea Li et Bu, sp. Nov.（模式产地：海南尖峰岭）; 另外2种为在中国首次记录的种： 米垫瘿蚊 C. mihijamensis Grover （分布：海南尖峰岭）和印垫瘿蚊 C. indorensis Grover（分布：陕西周至板房子）。文中给出了垫瘿蚊属与近缘的短角瘿蚊属Anarete Haliday的区别特征和中国种类分种检索表。模式标本均保存于南开大学生物学系昆虫标本室。     

短角瘿蚊属一新种记述(双翅目,瘿蚊科)

记述了采自山东省的短角瘿蚊1新种:泰山短角瘿蚊Anarete taishanensis sp.nov.,模式标本存放于山东农业大学昆虫标本室.     

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.