Dynamic evolutionary interplay between ontogenetic skull patterning and whole-head integration.

Autor: Ollonen J; Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland., Khannoon ER; Biology Department, College of Science, Taibah University, Al Madinah Al Munawwarah, Saudi Arabia.; Zoology Department, Faculty of Science, Fayoum University, Fayoum, Egypt., Macrì S; Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland., Vergilov V; National Museum of Natural History, Bulgarian Academy of Sciences, Sofia, Bulgaria., Kuurne J; Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland., Saarikivi J; Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland., Soukainen A; Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland., Aalto IM; Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland., Werneburg I; Senckenberg Centre for Human Evolution and Palaeoenvironment, Eberhard Karls Universität, Tübingen, Germany.; Fachbereich Geowissenschaften, Eberhard Karls Universität, Tübingen, Germany., Diaz RE Jr; Department of Biological Sciences, California State University, Los Angeles, CA, USA.; Department of Herpetology, Natural History Museum of Los Angeles County, Los Angeles, CA, USA., Di-Poï N; Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland. nicolas.di-poi@helsinki.fi.
Jazyk: angličtina
Zdroj: Nature ecology & evolution [Nat Ecol Evol] 2024 Mar; Vol. 8 (3), pp. 536-551. Date of Electronic Publication: 2024 Jan 10.
DOI: 10.1038/s41559-023-02295-3
Abstrakt: The arrangement and morphology of the vertebrate skull reflect functional and ecological demands, making it a highly adaptable structure. However, the fundamental developmental and macroevolutionary mechanisms leading to different vertebrate skull phenotypes remain unclear. Here we exploit the morphological diversity of squamate reptiles to assess the developmental and evolutionary patterns of skull variation and covariation in the whole head. Our geometric morphometric analysis of a complex squamate ontogenetic dataset (209 specimens, 169 embryos, 44 species), covering stages from craniofacial primordia to fully ossified bones, reveals that morphological differences between snake and lizard skulls arose gradually through changes in spatial relationships (heterotopy) followed by alterations in developmental timing or rate (heterochrony). Along with dynamic spatiotemporal changes in the integration pattern of skull bone shape and topology with surrounding brain tissues and sensory organs, we identify a relatively higher phenotypic integration of the developing snake head compared with lizards. The eye, nasal cavity and Jacobson's organ are pivotal in skull morphogenesis, highlighting the importance of sensory rearrangements in snake evolution. Furthermore, our findings demonstrate the importance of early embryonic, ontogenetic and tissue interactions in shaping craniofacial evolution and ecological diversification in squamates, with implications for the nature of cranio-cerebral relations across vertebrates.
(© 2024. The Author(s), under exclusive licence to Springer Nature Limited.)
Databáze: MEDLINE
Externí odkaz: