A morphofunctional study of the jumping apparatus in globular springtails

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY
Fábio G.L. Oliveira , Adrian A. Smith
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引用次数: 0

Abstract

Springtails are notable for their jumping apparatus and latch-mediated spring mechanism. The challenge, in the light of the tiny size and rapid movement of these organisms, has been to understand the morphological intricacies of this spring system. This study takes an approach that integrates SEM, MicroCT, cLSM and high-speed video recordings to understand the composition and functionality of the jumping apparatus in Megalothorax minimus (Neelipleona), Dicyrtomina ornata and Dicyrtomina minuta (Symphypleona). We focus on reconstructing, describing, and understanding the functioning of structures such as basal plates, musculature and furca. The dimensions of the jumping apparatus in Dicyrtomina and Megalothorax differ significantly from those in elongated springtails. A hypothesis of functional coherence between taxa, based on muscle connections and basal plates, is postulated. High-speed video recordings provide information on: 1) furca release timing and function during jumping and self-righting; 2) performance properties of manubrium, dens and mucro in interaction with the ground and in take-off; 3) possible pre-release furca moves. The study underscores the need for further research employing a variety of visualization methods in order to explore additional aspects such as retinaculum unlatching and furca flexion/extension muscles.

对球状弹簧虫跳跃装置的形态功能研究
春尾虫以其跳跃装置和闩式弹簧机制而闻名。由于这些生物体型微小、运动迅速,因此了解这种弹簧系统的复杂形态一直是一项挑战。本研究采用扫描电子显微镜(SEM)、显微CT、cLSM和高速视频记录相结合的方法,来了解Megalothorax minimus(Neelipleona)、Dicyrtomina ornata和Dicyrtomina minuta(Symphpleona)的跳跃装置的组成和功能。我们的重点是重建、描述和了解基板、肌肉组织和毛壳等结构的功能。Dicyrtomina和Megalothorax的跳跃装置的尺寸与细长箭尾的跳跃装置有很大不同。根据肌肉连接和基板,提出了类群间功能一致性的假设。高速视频记录提供了以下信息1)跳跃和自动扶正过程中毛囊的释放时间和功能;2)鬃毛、巢穴和粘膜在与地面互动和起飞时的性能特性;3)毛囊释放前可能的动作。该研究强调了进一步研究的必要性,即采用各种可视化方法,以探索更多方面,如缰绳解锁和毛皮弯曲/伸展肌肉。
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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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