Herzner Gudrun, Goettler Wolfgang, Kroiss Johannes, Purea Armin, Webb Andrew G, Jakob Peter M, Rössler Wolfgang, Strohm Erhard
Department of Animal Ecology and Tropical Biology, University of Würzburg, Biozentrum, Am Hubland, D-97074 Würzburg, Germany.
Arthropod Struct Dev. 2007 Jun;36(2):123-33. doi: 10.1016/j.asd.2006.08.006. Epub 2007 Jan 23.
The postpharyngeal gland has long been thought to occur only in ants. Here we characterize, by use of light and electron microscopy as well as 3D reconstruction based on nuclear magnetic resonance (NMR) imaging data, a large cephalic gland reservoir of males of a solitary digger wasp, the European beewolf, Philanthus triangulum. Several lines of evidence suggest that this reservoir is a postpharyngeal gland. The gland reservoir originates from the posterior part of the pharynx and consists of two pairs of unbranched tubular structures that occupy a large portion of the head capsule. Its wall is composed of a unicellular epithelium that is lined by a cuticle. The gland contains a blend of hydrocarbons and compounds with functional groups, and we show that the hydrocarbon fraction of the pheromone is congruent with the hydrocarbons on the cuticle. We discuss the implications of our findings for the evolution of the postpharyngeal gland in ants.
长期以来，人们一直认为咽后腺仅存在于蚂蚁中。在此，我们通过光学显微镜和电子显微镜以及基于核磁共振（NMR）成像数据的三维重建，对一种独居掘土黄蜂——欧洲狼蜂（Philanthus triangulum）雄性个体的一个大型头部腺体储库进行了特征描述。多条证据表明，这个储库是一个咽后腺。该腺体储库起源于咽部后部，由两对无分支的管状结构组成，占据了头壳的很大一部分。其壁由一层单细胞上皮构成，上皮内衬有角质层。该腺体含有多种碳氢化合物和带有官能团的化合物，并且我们发现，信息素中的碳氢化合物部分与角质层上的碳氢化合物相吻合。我们讨论了我们的研究结果对蚂蚁咽后腺进化的意义。
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