Expression of posterior Hox genes and opisthosomal appendage development in a mygalomorph spider.

Book lung Genitalia Spider development Spinneret Tarantula Trachea

Journal

Development genes and evolution
ISSN: 1432-041X
Titre abrégé: Dev Genes Evol
Pays: Germany
ID NLM: 9613264

Informations de publication

Date de publication:
27 Jul 2023
Historique:
received: 29 05 2023
accepted: 11 07 2023
pubmed: 27 7 2023
medline: 27 7 2023
entrez: 26 7 2023
Statut: aheadofprint

Résumé

Spiders represent an evolutionary successful group of chelicerate arthropods. The body of spiders is subdivided into two regions (tagmata). The anterior tagma, the prosoma, bears the head appendages and four pairs of walking legs. The segments of the posterior tagma, the opisthosoma, either lost their appendages during the course of evolution or their appendages were substantially modified to fulfill new tasks such as reproduction, gas exchange, and silk production. Previous work has shown that the homeotic Hox genes are involved in shaping the posterior appendages of spiders. In this paper, we investigate the expression of the posterior Hox genes in a tarantula that possesses some key differences of posterior appendages compared to true spiders, such as the lack of the anterior pair of spinnerets and a second set of book lungs instead of trachea. Based on the observed differences in posterior Hox gene expression in true spiders and tarantulas, we argue that subtle changes in the Hox gene expression of the Hox genes abdA and AbdB are possibly responsible for at least some of the morphological differences seen in true spiders versus tarantulas.

Identifiants

pubmed: 37495828
doi: 10.1007/s00427-023-00707-9
pii: 10.1007/s00427-023-00707-9
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Informations de copyright

© 2023. The Author(s).

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Auteurs

Ralf Janssen (R)

Department of Earth Sciences, Palaeobiology, Uppsala University, Villavägen 16, 75236, Uppsala, Sweden. ralf.janssen@geo.uu.se.

Matthias Pechmann (M)

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

Classifications MeSH