揭开晦涩难懂的同源关系:基底六足类群(Collembola: Tomoceridae)混沌分类学特征的胚后发育

IF 4.3 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Daoyuan Yu, Yating Zhang, Ziqiang Wang, Feng Hu, Manqiang Liu
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引用次数: 0

摘要

同源性评估对于系统动物学来说至关重要,但对于许多类群和性状来说,由于证据有限,精确识别同源性可能具有挑战性。匙吻鲟科(Tomoceridae)是长体匙吻鲟属(Collembola: Entomobryomorpha)最早的分支之一,也是该类中最常见和最著名的科之一。然而,该类群中一些重要性状的同源性仍然模糊不清,包括其特征性的序列特征。在本研究中,我们首次基于本体发育证据对番石榴科的混沌定位进行了严格的同源性评估。我们研究了三种 Tomocerus 的胚后混沌发育过程。第一龄幼虫的初级混沌发育在 Tomocerinae 中显示出高度的相似性。胚后发育涉及混沌类型之间的广泛转变。初生混沌体在发育过程中不断矮化,导致成虫明显的寡毛症。胸部的 Bothriotricha 是由初级大茶纲转化而来的。感觉混沌体在胚后发育过程中保持稳定,主要在中胸和第四腹节上表现出种间差异。这项研究将促进混沌分类学特征在未来 Tomoceridae 分类和系统发育研究中的应用,并有可能揭示 Entomobryomorpha 的早期演化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Unravelling the obscure homology: postembryonic development of chaetotaxic traits in a basal hexapod taxon (Collembola: Tomoceridae)
Homology assessment is essential for systematic zoology, but for many taxa and traits, precise recognition of homology can be challenging with limited evidence. Tomoceridae is one of the earliest branches in the elongate-bodied springtails (Collembola: Entomobryomorpha), and is among the commonest and best-known families in the class. However, the homology of some important traits is still obscure in this group, including its characteristic chaetotaxic traits. In this study, we conducted the first rigorous homology assessment of chaetotaxy in Tomoceridae based on ontogenetic evidence. The postembryonic development of chaetotaxy was investigated in three species of Tomocerus. The primary chaetotaxy of first instar larvae show high similarity within Tomocerinae. The postembryonic development involves extensive transformations between chaetal types. The continuous dwarfism of primary chaetae during development leads to apparent oligochaetosis in adults. The thoracic bothriotricha are transformed from primary macrochaetae. The sensory chaetotaxy is stable during postembryonic development, and shows interspecific differences mainly on the mesothorax and the fourth abdominal segment. This study will promote the future use of chaetotaxic traits in the taxonomic and phylogenetic studies of Tomoceridae, and will potentially illuminate the early evolution of Entomobryomorpha.
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来源期刊
CiteScore
7.20
自引率
4.30%
发文量
567
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