底真节肢动物Agnostina的角质层为三层

IF 1.3 3区农林科学 Q2 ENTOMOLOGY

Arthropod Structure & Development Pub Date : 2025-04-05 DOI:10.1016/j.asd.2025.101447

Elena B. Naimark , Stanislav Yu Chaika

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引用次数: 0

摘要

四个Agnostina家族的角质层非常复杂，挑战了先前提出的单层模型。它由三个不同的层组成，外层明显比中间层和内层厚；上面两层是层压的。内层非常薄，以菱形网状排列的原纤维为基础。对比分析表明，在演化过程中，中间层和内层厚度逐渐减小，外层相对较厚。这些独特的结构特征可能与不可知论的小型化有关。它们的角质层与其说像甲壳类动物，不如说是像螯足类动物。

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The cuticle of Agnostina (basal Euarthropoda) was three-layered

The cuticle of four Agnostina families is notably complex, challenging the previously proposed one-layer model. It consists of three distinct layers, with the outer layer being significantly thicker than the middle and inner layers; two upper layers are laminated. The inner layer is very thin and rests on a base of fibrils arranged in a rhomboidal mesh. Comparative analysis suggests that during evolution, the middle and inner layers have decreased in thickness, leaving the outer layer relatively thick. These distinctive structural features are possibly associated with miniaturization of agnostines. Their cuticle resembles that of chelicerates more than that of crustaceans.

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来源期刊

Arthropod Structure & Development 生物-昆虫学

CiteScore

3.50

自引率

10.00%

发文量

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.