School of Biological Sciences, The University of Queensland, Brisbane, Queensland, Australia.
School of Biological Sciences, The University of Queensland, Brisbane, Queensland, Australia; Centre for Microscopy & Microanalysis, The University of Queensland, Brisbane, Queensland, Australia.
Arthropod Struct Dev. 2014 May;43(3):211-9. doi: 10.1016/j.asd.2014.04.004. Epub 2014 Apr 18.
The Heteroptera show a diversity of glands associated with the epidermis. They have multiple roles including the production of noxious scents. Here, we examine the cellular arrangement and cytoskeletal components of the scent glands of pentatomoid Heteroptera in three families, Pentatomidae (stink bugs), Tessaratomidae, and Scutelleridae (shield-backed bugs or jewel bugs). The glands are; (1) the dorsal abdominal glands, (2) the tubular glands of the composite metathoracic gland, and (3) the accessory gland component of the composite metathoracic gland. The dorsal abdominal glands are at their largest in nymphs and decrease in size in adults. The metathoracic gland is an adult-specific gland unit with a reservoir and multiple types of gland cells. The accessory gland is composed of many unicellular glands concentrated in a sinuous line across the reservoir wall. The lateral tubular gland is composed of two-cell units. The dorsal abdominal glands of nymphs are composed of three-cell units with a prominent cuticular component derived from the saccule cell sitting between the duct and receiving canal. The cuticular components that channel secretion from the microvilli of the secretory cell to the exterior differ in the three gland types. The significance of the numbers of cells comprising gland units is related to the role of cells in regenerating the cuticular components of the glands at moulting in nymphs.
半翅目昆虫的表皮与多种腺体相关联，表现出多样性。这些腺体具有多种功能，包括产生有毒气味。在这里，我们研究了三个科（Pentatomidae，Tessaratomidae 和 Scutelleridae）的半翅目 Pentatomoid 昆虫的气味腺的细胞排列和细胞骨架成分。这些腺体是：（1）背腹部腺，（2）复合胸部管状腺，和（3）复合胸部附属腺。背腹部腺在若虫中最大，在成虫中逐渐变小。胸部腺是一种成虫特有的腺体单位，具有一个储液腔和多种类型的腺体细胞。附属腺由许多单细胞腺体组成，集中在储液腔壁上的蜿蜒线上。侧管状腺由两个细胞单位组成。若虫的背腹部腺由三个细胞单位组成，其中一个突出的表皮成分来自于位于导管和接收道之间的囊细胞。从分泌细胞的微绒毛到外部的分泌通道的表皮成分在三种腺体类型中不同。组成腺体单位的细胞数量的意义与细胞在若虫蜕皮时再生腺体的表皮成分的作用有关。
