结节疣子虫(疣子亚纲:白蚁科:白蚁科)喙腺超微结构的研究

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY Arthropod Structure & Development Pub Date : 2023-03-01 DOI:10.1016/j.asd.2023.101238
Cédric Aumont , Tereza Beránková , Dino P. McMahon , Renate Radek , Pierre D. Akama , David Sillam-Dussès , Jan Šobotník
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引用次数: 1

摘要

土食习性是在一些高级白蚁群中发现的进化新现象。对这些群体的研究对于揭示对这种生活方式的有趣适应非常重要。Verrucositermes属就是这样一个例子,其特点是在头囊、触角和上颌触须上有特殊的生长,这在任何其他白蚁中都没有发现。这些结构被假设与一种新的外分泌器官——吻腺的存在有关,其结构尚未被探索。因此,我们研究了疣子头囊表皮层的超微结构。我们描述了吻侧腺的超微结构,它仅由3类分泌细胞组成。主要的分泌细胞器包括粗糙的内质网和高尔基体,它们向头部表面提供分泌物,可能由功能不明的肽衍生成分组成。我们讨论了士兵的吻腺作为适应在寻找新的食物资源期间频繁遇到土壤病原体的可能作用。
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The ultrastructure of the rostral gland in soldiers of Verrucositermes tuberosus (Blattodea: Termitidae: Nasutitermitinae)

The soil-feeding habit is an evolutionary novelty found in some advanced groups of termites. The study of such groups is important to revealing interesting adaptations to this way-of-life. The genus Verrucositermes is one such example, characterized by peculiar outgrowths on the head capsule, antennae and maxillary palps, which are not found in any other termite. These structures have been hypothesized to be linked to the presence of a new exocrine organ, the rostral gland, whose structure has remained unexplored. We have thus studied the ultrastructure of the epidermal layer of the head capsule of Verrucositermes tuberosus soldiers. We describe the ultrastructure of the rostral gland, which consists of class 3 secretory cells only. The dominant secretory organelles comprise rough endoplasmic reticulum and Golgi apparatus, which provide secretions delivered to the surface of the head, likely made of peptide-derived components of unclear function. We discuss a possible role of the rostral gland of soldiers as an adaptation to the frequent encounter with soil pathogens during search for new food resources.

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来源期刊
CiteScore
3.50
自引率
10.00%
发文量
54
审稿时长
60 days
期刊介绍: Arthropod Structure & Development is a Journal of Arthropod Structural Biology, Development, and Functional Morphology; it considers manuscripts that deal with micro- and neuroanatomy, development, biomechanics, organogenesis in particular under comparative and evolutionary aspects but not merely taxonomic papers. The aim of the journal is to publish papers in the areas of functional and comparative anatomy and development, with an emphasis on the role of cellular organization in organ function. The journal will also publish papers on organogenisis, embryonic and postembryonic development, and organ or tissue regeneration and repair. Manuscripts dealing with comparative and evolutionary aspects of microanatomy and development are encouraged.
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