Ultrastructure and distribution of sensory receptors on the nonolfactory organs of the soldier caste in subterranean termite (Coptotermes spp.)

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY Arthropod Structure & Development Pub Date : 2022-09-01 DOI:10.1016/j.asd.2022.101201
Bramantyo Wikantyoso , Tomoya Imai , S. Khoirul Himmi , Sulaeman Yusuf , Toshimitsu Hata , Tsuyoshi Yoshimura
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引用次数: 2

Abstract

The soldier caste of termites uses sensilla to sense pheromonal, tactile, and vibrational cues to communicate inside and outside their nest. Although sensilla with many modalities on the antennae of subterranean termites have been well explored, there remains a lack of information regarding sensillum characteristics and distribution of the nonolfactory organs of the soldier caste in the Coptotermes genus. In this study, the ultrastructure of sensilla from the soldier caste of three Coptotermes spp. (Coptotermes formosanus, Coptotermes curvignathus, and Coptotermes gestroi) was observed by scanning and transmission electron microscopy, and the putative function of each type was deduced. Six total sensillum types were observed, with two mechanoreceptive sensillum types (hair and plate). The long flexible-peg mechanoreceptive sensilla may work as contact-chemoreceptive sensilla due to their elongated dendritic outer segments and uniporous characteristics. There was a significant depletion of mechano-chemoreceptive sensillum numbers in C. gestroi, which was compensated by a high density of short-peg mechanoreceptive sensilla on the pronotum. Finally, cuticular and innervation characteristics of thermo-/hygrosensitive sensilla were observed for the first time on the labrum of the soldier caste of Coptotermes.

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地下白蚁士兵等级非嗅觉器官感觉受体的超微结构和分布
士兵等级的白蚁使用感受器来感知信息素、触觉和振动信号,以便在巢内外进行交流。虽然对地下白蚁触角上具有多种形态的感受器已经进行了很好的探索,但关于白蚁属士兵种姓的感受器特征和非嗅觉器官分布的信息仍然缺乏。本研究采用扫描电镜和透射电镜观察了3种黄杨蚁属(黄杨蚁属、黄杨蚁属和黄杨蚁属)士兵种的感受器的超微结构,并推测了每种感受器的功能。共观察到6种感觉器类型,其中有2种机械感受感觉器类型(毛发和板)。长柔性杆机械感觉器由于其长树突外节和单孔特性,可以作为接触化学感觉器。机械-化学感受器的数量明显减少,但被高密度的短钉式机械感受器所补偿。最后,首次观察了黄蚁战士阶层唇部热/湿敏感感受器的表皮特征和神经支配特征。
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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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