Olfaction in Lepidoptera

Odours play a very important role in the life of insects belonging to the order Lepidoptera. In the present paper, a review is given of the current knowledge of morphology, development and function of the olfactory system in larval and adult moths and butterflies. Research regarding both the antennal and accessory olfactory pathways, as well as both the pheromone and the host odour detecting systems, is reviewed.     

可可广翅蜡蝉成虫触角的电镜扫描

通过扫描电镜观察了可可广翅蜡蝉成虫触角的形态及其感器的类型和分布.共发现6种感器,分别为毛形感器(Ⅰ型、Ⅱ型)、锥形感器、三角形感器、耳廓形感器、腔锥形感器、柱形感器.除柱形感器外,其他类型的感器在雌、雄虫触角上的数量和分布均无较大差异,而柱形感器仅见于雌虫触角,雄虫未见.各种感器主要分布在柄节端部,而鞭节上未发现任何感器.此外,在柄节端部还发现一种由多个三角形感器和耳廓形感器形成的感器簇.     

蚱科7种昆虫触角感受器的形态与分布

报道了蚱科(Tetrigidae)7种昆虫的触角感受器的形态与分布的扫描电镜观察结果.蚱科昆虫的触角感受器数量与类型较少,仅有芽孢形感受器I、芽孢形感受器II、腔形感受器和板形感受器4种类型,其中以板形感受器数量最多.通过对7种昆虫的雌性个体触角感受器在触角各节上的分布情况的分析,发现蚱科昆虫的触角感受器主要分布于触角的端部及中段节次上,其中以板形感受器的分布最为明显,主要集中分布于第10—15节触角上.     

克氏原螯虾触角腺的组织学研究

本文利用石蜡切片技术对克氏原螯虾触角腺进行了组织学研究，结果表明，克氏原螯虾触角腺可分为端囊、迷路和肾管三部分，端囊部分的细胞呈柱状，细胞核位于基部；迷路部分细胞也呈柱状，其顶端具刷状缘，核位于细胞的基部或中部，迷路部分可分为二个亚区；肾管部分的细胞呈柱状或较为扁平，核位于细胞的中部或靠近细胞顶端，肾管部分可分为三个不同亚区。     

中华蚱蜢触角感受器的扫描电镜观察

应用扫描电镜（SEM）对中华蚱蜢（Acrida cinerca Thunberg）触角感受器的超微结构、类型和分布进行了研究．结果表明中华蚱蜢雌雄虫均有7种感受器：毛形感受器、刺形感受器、锥形感受器、腔形感受器、腔锥形感受器、Bohm氏鬃毛、芽孢形感受器．触角感受器在每节上的数量和分布不同．     

两种烟粉虱寄生蜂感觉器的观察

扫描电镜观察桨角蚜小蜂(Eretmocerus sp.)和浅黄恩蚜小蜂(Encarsia sophia)雌成虫的感觉系统,结果如下:2种蚜小蜂的触角上具毛形感器、锥形感器、板形感器、刺形感器、坛形感器、B(o)hm氏鬃毛;复眼上具锥形感器;口器上颚每侧具3根毛状感器,下颚须与下唇须顶端各着生1根刺形感器;足具毛形感器与刺形感器,这些感觉器遍布足的各个亚节,前足具触角清洁器,后足具翅膀清洁器;产卵器上具毛形感器,感觉孔,以及倒钩状突起.     

任意斜向受力空间柔索的结构分析

该文对任意斜向受力空间柔索的结构进行理论计算分析,通过近似的解析方法,获得较理想的空间结构尺寸和载荷情况,为天线结构设计和工程应用提供数据支撑.此计算方法在许多实际工程中得到了很好的验证,天线架设后成型效果比较理想.     

The structure and function of the tarsus I sensillar field in mites of the genus Halarachne (Halarachnidae: Gamasida)

The sensillar field on tarsus I of Halarachne (Halarachnidae: Gamasida), a respiratory tract endoparasite of seals (Pinnipedia) is associated with 12 hair- or peg-like receptor sensilla in the larva and 13 or 14 in the adult. These include thermo-hygroreceptors, each with a double wall traversed by 3 or 4 slit-like pores (dw/WP-sensilla), olfactory chemoreceptors of small inorganic molecules, each with a single wall spanned by several small and simple pores (sw/WP-sensilla), gustatory chemoreceptors with a single terminal pore (TP-sensilla), and aporous NP-sensilla which have thermoreceptive and/or other unknown functions. Some sensilla are sessile and others socketed, the latter having a possible additional/alternative mechanoreceptive function. One mechanoreceptor is a probable trichobothrium-like vibration receptor which has not been previously described in the Anactinotrichida. This range of sensilla combined with the absence of sw/WP-sensilla, i.e. olfactory chemoreceptors covered with numerous, large centrally-plugged pores, suggests that although Halarachne spp. can locate large endothermic animals, they lack the ability to discriminate between different species.