ArticleScientific reports2017
Evolutionary history of the extant amphioxus lineage with shallow-branching diversification.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 37 citations in OpenAlex.
- The highly heterozygous European amphioxus (Branchiostoma lanceolatum) at the edge of panmixia.PLoS genetics · 2026Article
- Morphological characterization, mitochondrial genome assembly, and phylogenetic reconstruction of Branchiostoma malayanum within Branchiostomatidae.Scientific reports · 2025Article
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- Parallel evolution of amphioxus and vertebrate small-scale gene duplications.Genome biology · 2022Article
- An Updated Staging System for Cephalochordate Development: One Table Suits Them All.Frontiers in cell and developmental biology · 2021Article
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- Filter feeding, deviations from bilateral symmetry, developmental noise, and heterochrony of hemichordate and cephalochordate gills.Ecology and evolution · 2020Article
- Whole-genome resequencing reveals the pleistocene temporal dynamics ofEcology and evolution · 2020Article
- Dynamic Evolution of the Cthrc1 Genes, a Newly Defined Collagen-Like Family.Genome biology and evolution · 2020Article
- Molecular Fingerprint of Amphioxus Frontal Eye Illuminates the Evolution of Homologous Cell Types in the Chordate Retina.Frontiers in cell and developmental biology · 2020Article
- Asymmetron lucayanum: How many species are valid?PloS one · 2020Article
- Using high-resolution annotation of insect mitochondrial DNA to decipher tandem repeats in the control region.RNA biology · 2019Article
- Wnt evolution and function shuffling in liberal and conservative chordate genomes.Genome biology · 2018Article
- Article
- Pax3/7 duplicated and diverged independently in amphioxus, the basal chordate lineage.Scientific reports · 2018Article
- The role of transposable elements in functional evolution of amphioxus genome: the case of opsin gene family.Scientific reports · 2018Article
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Authors and funding
8 authors at 6 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Amphioxus or lancelets have been regarded as a key animal in understanding the origin of vertebrates. However, the evolutionary history within this lineage remains unexplored. As the amphioxus lineage has likely been separated from other chordates for a very long time and displays a marked left-right asymmetry, its evolutionary history is potentially helpful in better understanding chordate and vertebrate origins. We studied the phylogenetic relationships within the extant amphioxus lineage based on mitochondrial genomes incorporating new Asymmetron and Epigonichthys populations, and based on previously reported nuclear transcriptomes. The resulting tree patterns are consistent, showing the Asymmetron clade diverging first, followed by the Epigonichthys and Branchiostoma clades splitting. Divergence time estimates based on nuclear transcriptomes with vertebrate calibrations support a shallow diversification of the extant amphioxus lineage in the Tertiary. These estimates fit well with the closure of seaways between oceans by continental drift, ocean currents, and present geographical distributions, and suggest a long cryptic history from the origin of amphioxus to its most recent diversification. Deduced character polarities based on phylogenetic analyses suggest that the common ancestor of the extant amphioxus existed in a tiny epibenthic state with larva-like appearance of extant amphioxus, likely with ciliate epidermis.
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