ArticleDevelopmental dynamics : an official publication of the American Association of Anatomists2022
Platyfish bypass the constraint of the caudal fin ventral identity in teleosts.
Article in Developmental dynamics : an official publication of the American Association of Anatomists, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 6 citations in OpenAlex.
- Validity of Xiphophorus fish as models for human disease.Disease models & mechanisms · 2024Review
- Regeneration of the dermal skeleton and wound epidermis formation depend on BMP signaling in the caudal fin of platyfish.Frontiers in cell and developmental biology · 2023Article
- Platyfish bypass the constraint of the caudal fin ventral identity in teleosts.Developmental dynamics : an official publication of the American Association of Anatomists · 2022Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe caudal fin of teleosts is characterized by dorsoventral symmetry. Despite this external morphology, the principal rays of this appendage connect to bones below the notochord, indicating the ventral (hypochordal) identity of this organ.
resultsHere, we report that this typical architecture of the caudal fin is not fully conserved in the platyfish (Xiphophorus maculatus) and the guppy (Poecilia reticulata), representatives of the Poeciliidae family. We show that in these species, 3-4 principal rays connect to bones above the notochord, suggesting an epichordal contribution. Consistently, as examined in platyfish, dorsal identity genes zic1/4 were highly expressed in these rays, providing molecular evidence of their epichordal origin. Developmental analysis revealed that the earliest rays above the notochord emerge at the 10-ray stage of fin morphogenesis. In contrast to zebrafish and medaka, platyfish and guppies display a mirrored shape of dorsal and ventral processes of the caudal endoskeleton. Our study suggests that an ancestral bauplan expanded in poeciliids by advancing its symmetrical pattern.
conclusionThe platyfish evolved a fin architecture with the epichordal origin of its upper principal rays and a high level of symmetry in the caudal endoskeleton. This innovative architecture highlights the adaptation of the teleost skeleton.
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