Adhesion and shrinkage transform the rounded pupal horn into an angular adult horn in Japanese rhinoceros beetle.

IF 3.7 2区 生物学 Q1 DEVELOPMENTAL BIOLOGY
Development Pub Date : 2024-10-15 Epub Date: 2024-03-13 DOI:10.1242/dev.202082
Keisuke Matsuda, Haruhiko Adachi, Hiroki Gotoh, Yasuhiro Inoue, Shigeru Kondo
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引用次数: 0

Abstract

Clarifying the mechanisms underlying shape alterations during insect metamorphosis is important for understanding exoskeletal morphogenesis. The large horn of the Japanese rhinoceros beetle Trypoxylus dichotomus is the result of drastic metamorphosis, wherein it appears as a rounded shape during pupation and then undergoes remodeling into an angular adult shape. However, the mechanical mechanisms underlying this remodeling process remain unknown. In this study, we investigated the remodeling mechanisms of the Japanese rhinoceros beetle horn by developing a physical simulation. We identified three factors contributing to remodeling by biological experiments - ventral adhesion, uneven shrinkage, and volume reduction - which were demonstrated to be crucial for transformation using a physical simulation. Furthermore, we corroborated our findings by applying the simulation to the mandibular remodeling of stag beetles. These results indicated that physical simulation applies to pupal remodeling in other beetles, and the morphogenic mechanism could explain various exoskeletal shapes.

粘附和收缩将日本犀角金龟的圆形蛹角转化为角形成虫角。
澄清昆虫变态过程中形状改变的内在机制对于了解外骨骼形态发生非常重要。日本犀甲虫 Trypoxylus dichotomus 的大角是剧烈变态的结果,它在蛹期呈圆形,然后经过重塑变成成虫的角形。然而,这一重塑过程的机械机制仍然未知。在这项研究中,我们通过物理模拟研究了日本犀角金龟角的重塑机制。我们通过生物实验确定了导致重塑的三个因素--腹侧粘连、不均匀收缩和体积缩小--并通过物理模拟证明了这三个因素对于转化至关重要。此外,我们还将模拟应用于锹形甲虫的下颌骨重塑,从而证实了我们的发现。这些结果表明,物理模拟适用于其他甲虫的蛹重塑,而且形态发生机制可以解释各种外骨骼形状。
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来源期刊
Development
Development 生物-发育生物学
CiteScore
6.70
自引率
4.30%
发文量
433
审稿时长
3 months
期刊介绍: Development’s scope covers all aspects of plant and animal development, including stem cell biology and regeneration. The single most important criterion for acceptance in Development is scientific excellence. Research papers (articles and reports) should therefore pose and test a significant hypothesis or address a significant question, and should provide novel perspectives that advance our understanding of development. We also encourage submission of papers that use computational methods or mathematical models to obtain significant new insights into developmental biology topics. Manuscripts that are descriptive in nature will be considered only when they lay important groundwork for a field and/or provide novel resources for understanding developmental processes of broad interest to the community. Development includes a Techniques and Resources section for the publication of new methods, datasets, and other types of resources. Papers describing new techniques should include a proof-of-principle demonstration that the technique is valuable to the developmental biology community; they need not include in-depth follow-up analysis. The technique must be described in sufficient detail to be easily replicated by other investigators. Development will also consider protocol-type papers of exceptional interest to the community. We welcome submission of Resource papers, for example those reporting new databases, systems-level datasets, or genetic resources of major value to the developmental biology community. For all papers, the data or resource described must be made available to the community with minimal restrictions upon publication. To aid navigability, Development has dedicated sections of the journal to stem cells & regeneration and to human development. The criteria for acceptance into these sections is identical to those outlined above. Authors and editors are encouraged to nominate appropriate manuscripts for inclusion in one of these sections.
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