同步辐射 X 射线显微层析技术揭示的传播疾病的蚜虫和蚊子最后一次蜕皮期间穿刺口的发育过程

IF 5.6 1区 农林科学 Q1 ENTOMOLOGY Entomologia Generalis Pub Date : 2024-09-05 DOI:10.1127/entomologia/2024/2475
Bastien Cayrol, Irene Arnoldi, Vladimir Novak, Sara Epis, Matteo Brilli, Yvan Rahbé, Marilyne Uzest, Paolo Gabrieli
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引用次数: 0

摘要

刺吸式昆虫是动植物病原体的高效传播媒介。该类昆虫具有多型性,其穿刺器官的结构和形态发生具有高度异质性,能适应特定的寄主和取食机制。例如,半代谢蚜虫从若虫到成虫都以植物汁液为食,它们每次蜕皮都会更新花柱,这要归功于专门的分泌腺。与众不同的是,全代谢蚊子有两种取食模式:幼虫在水中用嘴过滤和刮擦表面取食,而雌成虫可以从脊椎动物宿主身上获取血液。蛹的变态过程允许从一种取食习性转换到另一种取食习性。在这里,我们利用非侵入式 X 射线同步加速器显微层析技术,深入研究了豌豆蚜 Acyrthosiphon pisum (Harris 1776) (半翅目:蚜科)孤雌生殖雌虫和白纹伊蚊 Aedes albopictus (Skuse 1895) (双翅目:蚊科)雌虫成虫口器生物发生的特征。通过比较从蚜虫幼虫期和成虫期以及从蚊子的幼虫期和成虫期收集的数据集,我们能够跟踪蚜虫头部分泌腺的形态变化和成虫花柱的合成,并跟踪蛹中蚊子口器的重新形成。我们的研究为研究刺吸式口器的进化和发展提供了一个基线,并有助于更好地了解昆虫的形态发生过程。
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The development of the piercing mouth during the last molt of the diseases-transmitting aphids and mosquitoes as revealed by synchrotron X-ray microtomography
Piercing-sucking insects are extremely efficient vectors of animal and plant pathogens. This group is polyphyletic with the piercing organ highly heterogenous in its structure and morphogenesis, adapted to a specific host and feeding mechanism. For instance, hemimetabolous aphids feed on plant sap from nymphs to adults and they renew their stylets at each molt, thanks to specialized secreting glands. Distinctly, holometabolous mosquitoes have two feeding modes: larvae feed in water by filtering and scraping surfaces with their mouths, while female adults can acquire blood from vertebrate hosts. The pupal metamorphosis allows switching from one feeding habit to another. Here, we present a deep characterization of the biogenesis of the adult mouthparts in parthenogenetic females of the pea aphid Acyrthosiphon pisum (Harris 1776) (Hemiptera: Aphididae) and in females of the mosquito Aedes albopictus (Skuse 1895) (Diptera: Culicidae), investigated using non-invasive X-ray synchrotron-based microtomography. Comparing datasets collected from aphid juvenile and adult stages and from preimaginal and adult stages of the mosquito, we were able to track the morphological changes of secreting glands and the synthesis of the adult stylet in aphid heads and to follow the de novo formation of mosquito mouthparts in pupae. Our study provides a baseline for investigating the evolution and the development of piercing-sucking mouthparts and to better understand how morphogenesis works in insects.
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来源期刊
Entomologia Generalis
Entomologia Generalis 生物-昆虫学
CiteScore
7.10
自引率
18.80%
发文量
72
审稿时长
>12 weeks
期刊介绍: Its scope covers all aspects of basic and applied research dealing with insects and more broadly with arthropods inhabiting wild, agricultural and/or urban habitats. The journal also considers research integrating various disciplines and issues within the broad field of entomology and ecology. Entomologia Generalis publishes high quality research articles on advances in knowledge on the ecology and biology of arthropods, as well as on their importance for key ecosystems services, e.g. as biological control and pollination. The journal devotes special attention to contributions providing significant advances (i) on the fundamental knowledge and on sustainable control strategies of arthropod pests (including of stored products) and vectors of diseases, (ii) on the biology and ecology of beneficial arthropods, (iii) on the spread and impact of invasive pests, and (iv) on potential side effects of pest management methods. Entomologia Generalis welcomes review articles on significant developments in the field of entomology. These are usually invited by the editorial board, but proposals may be sent to the Editor-in-Chief for preliminary assessment by the editorial board before formal submission to the journal. The journal also considers comments on papers published in Entomologia Generalis, as well as short notes on topics that are of broader interest.
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