Evolutionary biology: The amphioxus unleashed

  title={Evolutionary biology: The amphioxus unleashed},
  author={Henry Gee},
  • H. Gee
  • Published 19 June 2008
  • Biology
  • Nature
The genome sequence of a species of amphioxus, an iconic organism in the history of evolutionary biology, opens up a fresh vista on the comparative investigation of chordates and vertebrates. 
"Insights of early chordate genomics: endocrinology and development in amphioxus, tunicates and lampreys": introduction to the symposium.
This symposium focused on the evolution of chordate genomes, in particular, those events that occurred before the appearance of jawed vertebrates, and brought together researchers whose recent work on these organisms spans the gap from genomics to the development of body forms and functions.
The cult of amphioxus in German Darwinism; or, Our gelatinous ancestors in Naples’ blue and balmy bay
  • N. Hopwood
  • History
    History and philosophy of the life sciences
  • 2015
A richer account of the public appeal of amphioxus as a primitive ancestor is offered, focusing on how the ‘German Darwin’ Ernst Haeckel persuaded general magazine and newspaper readers to revere this “flesh of the authors' flesh and blood of their blood”.
New frontiers in the evolution of fin development.
New perspectives on the transition from midline to paired appendages focus on origin and molecular regionalization of the lateral plate mesoderm and novel ectodermic competency zones for fin induction, and recent work exploring how tetrapod limbs evolved from fish fins is reviewed.
Ptc, Smo, Sufu, and the Hedgehog signaling pathway in amphioxus
The data show that the expression patterns of these three genes are overlapping with Hh and Gli during the embryonic development in amphioxus, suggesting that amphioxUS may possess a conserved and functional Hh signaling pathway similar to that of vertebrates.
Deep Homology?: Uncanny Similarities of Humans and Flies Uncovered by Evo-Devo
Deep Homology?: Uncanny Similarities of Humans and Flies Uncovered by Evo-Devo is Lewis Held's final act in a threepart series discussing developmental evolution. Part one of the series−Quirks of
Non-random decay of chordate characters causes bias in fossil interpretation
It is shown, from experimental decay of amphioxus and ammocoetes, that loss of chordate characters during decay is non-random: the more phylogenetically informative are the most labile, whereas plesiomorphic characters are decay resistant.
Evolution of oxytocin pathways in the brain of vertebrates
The present review draws attention to the non-synaptic axonal release in small and defined brain regions with the aim to clearly distinguish this way of oxytocin action from the classical synaptic transmission on one side and from dendritic release followed by a global diffusion on the other side.
The Nuanced Interplay of Intrinsic Disorder and Other Structural Properties Driving Protein Evolution.
The results somewhat corroborate earlier findings that intrinsically disordered sites tend to be more variable than ordered sites, but there is considerable overlap among their rate distributions, and a significant confounding interaction exists between intrinsic disorder and secondary structure.
Essential Principles for Autonomous Robotics
  • H. Hexmoor
  • Art
    Essential Principles for Autonomous Robotics
  • 2013
This book is a snapshot of motivations and methodologies for the authors' collective attempts to transform their lives and enable us to cohabit with robots that work with and for us to demystify the abilities and limitations of robots.


Miniature genome in the marine chordate Oikopleura dioica.
Oikopleura dioica is a small pelagic chordate belonging to the class of larvaceans, which may be derived from the most basal branch of Larvacean, which includes vertebrates, cephalochordates, and urochords.
The amphioxus genome and the evolution of the chordate karyotype
Whole-genome comparisons illuminate the murky relationships among the three chordate groups (tunicates, lancelets and vertebrates), and allow not only reconstruction of the gene complement of the last common chordate ancestor but also partial reconstruction of its genomic organization.
The Draft Genome of Ciona intestinalis: Insights into Chordate and Vertebrate Origins
A draft of the protein-coding portion of the genome of the most studied ascidian, Ciona intestinalis, is generated, suggesting that ascidians contain the basic ancestral complement of genes involved in cell signaling and development.
The amphioxus genome illuminates vertebrate origins and cephalochordate biology.
The results indicate that the amphioxus genome is elemental to an understanding of the biology and evolution of nonchordate deuterostomes, invertebrate chordates, and vertebrates.
Genomic analysis of the immune gene repertoire of amphioxus reveals extraordinary innate complexity and diversity.
The first comprehensive genomic survey of the immune gene repertoire of the Amphioxus Branchiostoma floridae suggests that the amphioxus, a species without vertebrate-type adaptive immunity, holds extraordinary innate complexity and diversity.
Tunicates and not cephalochordates are the closest living relatives of vertebrates
It is shown that phylogenetic analyses of the genome sequencing of the appendicularian Oikopleura dioica provide compelling evidence that tunicates, and not cephalochordates, represent the closest living relatives of vertebrates.
Insights from the amphioxus genome on the origin of vertebrate neural crest.
The genome of the basal chordate, amphioxus, contains homologs of most vertebrate genes implicated in a putative neural crest gene regulatory network (NC-GRN) for neural crest development, and survey of gene expression shows that early inducing signals, neural plate border patterning genes, and melanocyte differentiation genes appear conserved.
The embryology of amphioxus
Although the egg of Amphioxus is much more fluid and less stereotyped than that of Ascidians, the poles, axes, and localizations of formative materials are much the same in the two. The spermatozoon
  • R. Rosenfeld
  • Medicine
    Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery
  • 2009
Acad. Imp. Sci. Saint-Pétersbourg
  • Acad. Imp. Sci. Saint-Pétersbourg
  • 1866