中国黑缘蝽属新种记述(半翅目:缘蝽科)

中国黑缘蝽属(Hygia Uhler)为缘蝽科缘蝽亚科中较大的属,体均为黑色,常具黄色或褐黄色斑。截止到目前已记载19种,现由近年来采集的标本中又发现7新种,分属于两个亚属:黑缘蝽亚属Hygia Uhler及沟缘蝽亚属Colpura Bergroth,现描述如下。文内所用量度单位均为毫米。模式标本除注明者外,均存放南开大学生物系。     

Seasonal plasticity in growth and development of the speckled wood butterfly, Pararge aegeria (Satyrinae)

Regulation of growth and development by photoperiod was studied in a population of the speckled wood butterfly, Purarge aegeria L. (Lepidoptera: Satyrinae), from southern Sweden. Individuals were reared in a range of photoperiodic regimes (9L. to 22L) and temperatures (13°C to 21° C). Plasticity was found for important life-history traits- generation time, growth rate and final weight and seasonal regulation of development in response to photoperiod was found to occur at two levels. Purarge aegeria hibernates as a third instar larva or in the pupal stage, cantering one of four major developmental pathways in response to photoperiod: (1) direct development in both the larval and pupal stages, (2) pupal winter diapause with or (3) without a preceding larval summer diapause, or (4) larval winter diapause. In addition to this high-level regulation of individual development, larval growth rate and pupal development rate also appear to be finally regulated by photoperiod within each major pathway. As photoperiods decreased from 22 h to 17 h at 17° C, growth rate among directly developing larvae increased progressively, as was the case for larva? developing according to a univoltine life cycle from 17 h to 14 h. At two photoperiods, 13 h and 16 h (corresponding to shifts between major pathways), both larval and pupal development were extremely variable with the fastest individuals developing directly and the slowest developing with a diapause. This indicates a gradual nature of diapause itself, suggesting that the two level may not he fundamentally different.     

灭幼脲引起两种幼虫表皮组织病变的显微观察

本文研究了灭幼脲引起黄粉(虫甲)(Tenebrio mclitor)和粘虫(Mythimna separata)幼虫的中毒征象和组织学病变.低剂量能引起幼虫蜕皮障碍,但看不到明显的组织学病变.高剂量处理,不仅引起了严重的中毒征象,而且伴有明显的组织学病变:内表皮生长停滞,真皮细胞排列异常,在内表皮和真皮细胞之间出现附加层和球状颗粒.对这些现象进行了较细致的讨论.     

吉林省跃度蝗属一新种：直翅目：网翅蝗科

本文报道跃度蝗属1新种。模式标本保存于东北师范大学生物系动物标本室。1.土们岭跃度蝗Podismopsis tumenlingensis,新种 雄性:体小型。头顶三角形,具中隆线,眼间距宽为触角间颜面隆起宽的2.00-2.26倍。缺头侧窝。颜面倾斜,颜面隆起侧缘近平行,中央具纵沟。触角丝状,     

玉米螟触角电位反应的专一性

我国的玉米螟曾被记载为欧洲玉米螟(European corn borer,Ostrinia nubilalis),在研究性信息素的过程中,曾按照Klun等(1970)鉴定的欧洲玉米螟性信息素顺-和反-11-十四碳烯醇乙酸酯这两种异构体进行合成,但未发现该两种异构体的任何配比在田间有诱蛾活性。程志青等(1980)鉴定出我国玉米螟的性信息素是顺-和反-12-十四碳烯醇乙酸酯,并根据Mutuura等(1970)作的分类鉴定,认为我国的玉米螟应为亚洲玉米螟(Asiatic corn borer,Ostrinia furnacalis)。因此,近年来国内有关玉米螟的研究报告(程志青等,1980;1982;姜仲雪等,1981;任自立等,1983)都称我国的玉米螟为亚洲玉米螟。但     

几种常用中药对地鼠肠道正常菌群的影响

我们选择了几种药性不同的中药,使用各种选择性培养基,对给药组和正常动物组的地鼠肠菌群进行了研究,结果表明,黄芪组与正常动物组比较需氧菌的量有所增加,统计学差异显著(P<0.001)。而其他几味苦寒药(大黄、黄芩、白芍等)对需氧菌的作用不明显。在各类厌氧菌的分离结果中,各给中药组与正常组比较均有明显差异。给药组之间比较,药性相同的组之间没有显著变化,药性不同的组之间变化显著。通过实验我们发现中药对正常地鼠的肠道菌群是有明显影响的,与正常动物组相比及不同药性组间相比各类菌的增长或减少都具有统计学意义。     

去神经对快,慢肌纤维肌球蛋白ATPase影响的组织化学观察

本文用组织化学方法观察了豚鼠比目鱼肌(SOL)和腓骨第三肌(PT)在去神经后其快、慢纤维肌球蛋白ATPase特性的变化。在正常肌肉中Ⅰ型(慢)纤维和Ⅱ型(快)纤维分别具有酸和碱稳定ATPase活性。慢纤维在去神经后出现了碱稳定ATPase活性,而快纤维则无明显变化。结果表明,只有慢纤维的肌球蛋白ATPase特性才与神经支配有关。     

猪胞内劳森菌感染的免疫应答与检测技术研究进展

胞内劳森菌(Lawsonia intracellularis, LI)常引起猪精神不振、食欲减退、血样下痢或突然死亡,严重损害养猪业。猪群感染该菌在肠道诱导免疫应答的研究较少。因该菌胞内寄生,基于细菌不同感染阶段动物免疫应答特点,检测方法会有所侧重。本文重点阐述了胞内劳森菌感染后机体免疫应答的特点,并对其检测技术进行综述,以期为新型检测技术研发及疫病防控提供参考。