刺刺原蜂的头部解剖(膜翅目:蚁科:刺刺原蜂科)及其下颌运动假说

IF 3.8 1区 农林科学 Q1 ENTOMOLOGY Myrmecological News Pub Date : 2021-04-01 DOI:10.25849/MYRMECOL.NEWS_031:085
A. Richter, Francisco Hita Garcia, R. Keller, J. Billen, Julian Katzke, B. Boudinot, E. Economo, R. Beutel
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引用次数: 18

摘要

蚁亚科(Leptanillinae)和蚁亚科(marialinae)可能是现存蚁科(Formicidae)的姐妹群。为了增加对这些不寻常的和系统发育上至关重要的蚂蚁的解剖学和功能形态学的了解,我们详细记录和描述了瘦蚁,Protanilla lini Terayama, 2009年的头骨。该物种的下颌关节与迄今为止研究的其他蚂蚁有很大不同,显然代表了一种衍生的条件。我们提出了一种运动模式的专门下颌骨,包括可变旋转和复杂的锁定机制。虽然大开口和独特的关节是P. lini下颌运动的特征,但观察到的情况不同于其他蚂蚁群体中发生的陷阱颌机制,我们目前无法确认这种功能配置。与poneroformicine蚂蚁相比,Protanilla lini几乎没有表现出任何多形性,可能除了没有圆形的apodeme。相反,这个物种的特点是一套与它的下生和专门的掠食性生活方式有关的非胚性特征。这包括眼睛和视神经丸的丧失,明显的头部突出,以及派生的下颌关节。本研究是我们重建蚂蚁头侧地平面的另一个基石,将有助于我们对蚂蚁进化的理解。
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The head anatomy of Protanilla lini (Hymenoptera: Formicidae: Leptanillinae), with a hypothesis of their mandibular movement
The hypogaeic ant subfamilies Leptanillinae and Martialinae likely form the sister group to the remainder of the extant Formicidae. In order to increase the knowledge of anatomy and functional morphology of these unusual and phylogenetically crucial ants, we document and describe in detail the cranium of a leptanilline, Protanilla lini Terayama, 2009. The mandibular articulation of the species differs greatly from that of other ants studied so far, and clearly represents a derived condition. We propose a mode of movement for the specialized mandibles that involves variable rotation and sophisticated locking mechanisms. While a wide opening gape and a unique articulation are characteristics of the mandibular movement of P. lini, the observed condition differs from the trap-jaw mechanisms occurring in other groups of ants, and we cannot, at present, confirm such a functional configuration. Protanilla lini displays hardly any plesiomorphies relative to the poneroformicine ants, with the possible exception of the absence of the torular apodeme. Instead, the species is characterized by a suite of apomorphic features related to its hypogaeic and specialized predatory lifestyle. This includes the loss of eyes and optic neuropils, a pronouncedly prognathous head, and the derived mandibular articulation. The present study is an additional stepping-stone on our way to reconstructing the cephalic ground plan of ants and will contribute to our understanding of ant evolution.
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来源期刊
Myrmecological News
Myrmecological News ENTOMOLOGY-
CiteScore
7.30
自引率
4.90%
发文量
0
审稿时长
>12 weeks
期刊介绍: Taxonomic manuscripts with isolated species descriptions are generally discouraged, especially for genera with large numbers of undescribed species; it lies at the discretion of the editorial team whether such manuscripts are considered. Papers on new distribution records will be considered if the new records are sufficiently important or unexpected from a biogeographical perspective. Such papers could, for example, discuss relevant biological/ecological data and/or biogeographical implications such as analysis by species-distribution modelling. In detail, research areas covered by Myrmecological News include: behaviour; biogeography and faunistics; biological-pest control; chemical ecology; climate-change biology; cognition and learning; comparative and functional morphology; community ecology; conservation biology and bioindication; cytogenetics; ecology and evolution of (endo)symbioses; ecosystem (dis)services; foraging strategies; fossils; fragmentation ecology; genomics; histology; immune research; (integrative) taxonomy; interspecific hybridisation; invasion biology; life-history research; methodology in community quantification; national checklists; neurobiology; niche ecology; orientation and navigation; phenology; phylogeny and phylogeography; population genetics; sensory physiology; social evolution; social parasitism; sociogenomics; stable isotopes; tools for routine identification.
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