Extraembryonic tissue in chelicerates: a review and outlook

Author:

Prpic Nikola-Michael1ORCID,Pechmann Matthias2ORCID

Affiliation:

1. Justus-Liebig-Universitaet Giessen, Institut für Allgemeine Zoologie und Entwicklungsbiologie, AG Zoologie mit dem Schwerpunkt Molekulare Entwicklungsbiologie, Heinrich-Buff-Ring 38, 35392 Giessen, Germany

2. Institute for Zoology, University of Cologne, Biocenter, Zuelpicher Strasse 47b, 50674 Cologne, Germany

Abstract

The formation of extraembryonic membranes (EEMs) contributes to the proper development of many animals. In arthropods, the formation and function of EEMs have been studied best in insects. Regarding the development of extraembryonic tissue in chelicerates (spiders and relatives), most information is available for spiders (Araneae). Especially two populations of cells have been considered to represent EEMs in spiders. The first of these potential EEMs develops shortly after egg deposition, opposite to a radially symmetrical germ disc that forms in one hemisphere of the egg and encloses the yolk. The second tissue, which has been described as being extraembryonic is the so-called dorsal field, which is required to cover the dorsal part of the developing spider germ rudiment before proper dorsal closure. In this review, we summarize the current knowledge regarding the formation of potential extraembryonic structures in the Chelicerata. We describe the early embryogenesis of spiders and other chelicerates, with a special focus on the formation of the potential extraembryonic tissues. This article is part of the theme issue ‘Extraembryonic tissues: exploring concepts, definitions and functions across the animal kingdom’.

Funder

Deutsche Forschungsgemeinschaft

Publisher

The Royal Society

Subject

General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Expression of posterior Hox genes and opisthosomal appendage development in a mygalomorph spider;Development Genes and Evolution;2023-07-27

2. Extraembryonic tissues: exploring concepts, definitions and functions across the animal kingdom;Philosophical Transactions of the Royal Society B: Biological Sciences;2022-10-17

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