Revisiting the formation of midgut epithelium in Zygentoma (Insecta) from a developmental study of the firebrat Thermobia domestica (Packard, 1873) (Lepismatidae)

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY Arthropod Structure & Development Pub Date : 2023-03-01 DOI:10.1016/j.asd.2023.101237
Shodo Mtow , Tadaaki Tsutsumi , Mika Masumoto , Ryuichiro Machida
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Abstract

Zygentoma is an order of wingless insects, representing the sister group of Pterygota and constituting Dicondylia together with Pterygota. Contrasting views exist regarding midgut epithelium formation in Zygentoma. According to some reports, in Zygentoma, the midgut epithelium is entirely derived from yolk cells as in other wingless orders; however, according to other reports, the midgut epithelium is of dual origin in Zygentoma, similar to that in Palaeoptera of Pterygota, i.e., the anterior and posterior midgut epithelia are stomodaeal and proctodaeal respectively, whereas the middle part of the midgut originates from yolk cells. Aiming to provide a sound basis to evaluate the true image of midgut epithelium formation in Zygentoma, we examined the formation of the midgut epithelium in detail in Thermobia domestica, and concluded that the midgut epithelium is exclusively derived from yolk cells in Zygentoma, without the stomodaeal and proctodaeal elements involved in its formation. The participation of the anlagen differentiated at or around the stomodaeal and proctodaeal extremities in the formation of the midgut epithelium (bipolar formation) may be regarded as having first appeared not in Dicondylia but in Pterygota, of which the major part is represented by Neoptera with the midgut epithelium formed through bipolar formation.

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从家蝇(Packard, 1873) (Lepismatidae)的发育研究再看Zygentoma(昆虫科)中肠上皮的形成
Zygentoma是无翅昆虫的一目,是翼形目的姐妹类群,与翼形目共同构成双翅目。关于Zygentoma中肠上皮的形成存在不同的观点。根据一些报道,在Zygentoma中,与其他无翅目一样,中肠上皮完全来自蛋黄细胞;然而,根据其他报道,Zygentoma的中肠上皮具有双重起源,类似于翼形目的古翅目,即前、后中肠上皮分别为口窝状和前窝状,而中肠中部起源于卵黄细胞。为了更好地评价Zygentoma中肠上皮形成的真实图像,我们对家热蝇(Thermobia domestica)中肠上皮的形成进行了详细的研究,得出结论:Zygentoma中肠上皮完全来源于蛋黄细胞,没有气孔和直肠成分参与其形成。在口端和前端或其周围分化的胶原参与中肠上皮的形成(双极形成),可以认为不是首先出现在双孔目,而是首先出现在翼目,其中以新翅目为主要代表,其中肠上皮是通过双极形成的。
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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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