Eye development influences horn size but not patterning in horned beetles.
Onthophagus
evolutionary novelty
resource allocation trade‐off
Journal
Evolution & development
ISSN: 1525-142X
Titre abrégé: Evol Dev
Pays: United States
ID NLM: 100883432
Informations de publication
Date de publication:
10 May 2024
10 May 2024
Historique:
revised:
29
04
2024
received:
22
08
2023
accepted:
30
04
2024
medline:
11
5
2024
pubmed:
11
5
2024
entrez:
11
5
2024
Statut:
aheadofprint
Résumé
Understanding the origin of novel morphological traits is a long-standing objective in evolutionary developmental biology. We explored the developmental genetic mechanisms that underpin the formation of a textbook example of evolutionary novelties, the cephalic horns of beetles. Previous work has implicated the gene regulatory networks associated with compound eye and ocellar development in horn formation and suggested that horns and compound eyes may influence each other's sizes. Therefore, we investigated the functional significance of genes central to visual system formation in the initiation, patterning, and size determination of head horns across three horned beetle species. We find that while the downregulation of canonical eye patterning genes reliably reduces or eliminates compound eye formation, it does not alter the position or shape of head horns yet does result in an increase in relative horn length. We discuss the implications of our results for our understanding of the genesis of cephalic horns in particular and evolutionary novelties in general.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e12479Subventions
Organisme : National Science Foundation
Informations de copyright
© 2024 The Authors. Evolution & Development published by Wiley Periodicals LLC.
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