ArticleScientific reports2022
Developmental independence of median fins from the larval fin fold revises their evolutionary origin.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 15 citations in OpenAlex.
- Early ultraviolet exposure disrupts late dorsal fin skeletal development in zebrafish.Developmental dynamics : an official publication of the American Association of Anatomists · 2026Article
- Actinotrichia-independent developmental mechanisms of spiny rays facilitate the morphological diversification of Acanthomorpha fish fins.Nature communications · 2026Article
- CRISPR/Cas9-Mediated Disruption ofInternational journal of molecular sciences · 2025Article
- The emergence ofFrontiers in cell and developmental biology · 2025Article
- The sclerotome is the source of the dorsal and anal fin skeleton and its expansion is required for median fin development.Development (Cambridge, England) · 2024Article
- The dwarf neon rainbowfish Melanotaenia praecox, a small spiny-rayed fish with potential as a new Acanthomorpha model fish: I. Fin ray ontogeny and postembryonic staging.Developmental dynamics : an official publication of the American Association of Anatomists · 2024Article
- The dwarf neon rainbowfish Melanotaenia praecox, a small spiny-rayed fish with potential as a new Acanthomorpha model fish: II. Establishment of a microinjection procedure for genetic engineering.Developmental dynamics : an official publication of the American Association of Anatomists · 2024Article
- TeleostProceedings of the National Academy of Sciences of the United States of America · 2024Article
- wnt10a is required for zebrafish median fin fold maintenance and adult unpaired fin metamorphosis.Developmental dynamics : an official publication of the American Association of Anatomists · 2024Article
- Pleiotropic functions of chordin gene causing drastic morphological changes in ornamental goldfish.Scientific reports · 2022Article
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Authors and funding
4 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The median fins of modern fish that show discrete forms (dorsal, anal, and caudal fins) are derived from a continuous fold-like structure, both in ontogeny and phylogeny. The median fin fold (MFF) hypothesis assumes that the median fins evolved by reducing some positions in the continuous fin fold of basal chordates, based on the classical morphological observation of developmental reduction in the larval fin folds of living fish. However, the developmental processes of median fins are still unclear at the cellular and molecular levels. Here, we describe the transition from the larval fin fold into the median fins in zebrafish at the cellular and molecular developmental level. We demonstrate that reduction does not play a role in the emergence of the dorsal fin primordium. Instead, the reduction occurs along with body growth after primordium formation, rather than through actively scrapping the non-fin forming region by inducing cell death. We also report that the emergence of specific mesenchymal cells and their proliferation promote dorsal fin primordium formation. Based on these results, we propose a revised hypothesis for median fin evolution in which the acquisition of de novo developmental mechanisms is a crucial evolutionary component of the discrete forms of median fins.
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