日本冠蚁咽前腺和咽前腺的形态和超微结构。

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY Arthropod Structure & Development Pub Date : 2022-10-18 DOI:10.2139/ssrn.4157419
Wenjing Xu, Guoyun Zhang, Liangliang Zhang, Xiaolei Wang, J. Billen, H. He
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引用次数: 3

摘要

咽前腺(prePG)和咽前腺(PG)构成了日本冠蚁头部最大的外分泌结构。我们用显微镜研究了不同种姓两腺体的组织学和超微结构特征。分泌单位的数量在prePG中明显高于其他蚁种,并显示出一个复杂的管道系统,由管道细胞,次级管道和主管道组成。这些细胞将成百上千个分泌细胞的分泌物通过两侧的改良筛板导入咽部前。手套状PG在小管数量上表现出明显的等级差异。prePG和PG的超微结构均显示出丰富的线粒体和分泌囊泡。此外,prePG含有粗糙的内质网(RER),这意味着它的主要分泌物是蛋白质类化合物,而PG以光滑的内质网(SER)为主,这意味着主要分泌物是脂质。细胞数量和PG小管数量等形态学差异表明不同等级的分泌能力不同。我们首次引入基于组织学的相对大小来指示分泌活性。在小工蜂中,prePG的比例高发育支持了营养作用。
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Morphology and ultrastructure of the prepharyngeal and pharyngeal glands in the ant Camponotus japonicus.
The prepharyngeal gland (prePG) and pharyngeal gland (PG) make up the largest exocrine structures in the head of the ant Camponotus japonicus. We used microscopy to study the histological and ultrastructural features of both glands in different castes. The number of secretory units in the prePG is considerably higher than in other ant species and shows a complex duct system which is made up by duct cells, secondary ducts and a main duct. These lead the secretions of hundreds to thousands of secretory cells into the prepharynx through a modified sieve plate at each side. The glove-shaped PG shows clear caste differences in tubule number. The ultrastructure of both the prePG and PG shows abundant mitochondria and secretion vesicles. Moreover, the prePG is loaded with rough endoplasmic reticulum (RER) which means its main secretions are proteinaceous compounds, while the PG is dominated by smooth endoplasmic reticulum (SER) which means the main secretions are lipids. The morphological differences like cell number of the prePG and tubule number of the PG indicate different secretory abilities of each caste. We for the first time introduce histology-based relative size to indicate secretory activity. The proportionally high development of the prePG in minor workers supports a role in trophallaxis.
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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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