A Standard System to Study Vertebrate Embryos

@article{Werneburg2009ASS,
  title={A Standard System to Study Vertebrate Embryos},
  author={Ingmar Werneburg},
  journal={PLoS ONE},
  year={2009},
  volume={4}
}
  • I. Werneburg
  • Published 12 June 2009
  • Biology, Environmental Science
  • PLoS ONE
Staged embryonic series are important as reference for different kinds of biological studies. I summarise problems that occur when using ‘staging tables’ of ‘model organisms’. Investigations of developmental processes in a broad scope of taxa are becoming commonplace. Beginning in the 1990s, methods were developed to quantify and analyse developmental events in a phylogenetic framework. The algorithms associated with these methods are still under development, mainly due to difficulties of using… 
Development and embryonic staging in non‐model organisms: the case of an afrotherian mammal
TLDR
Ossification in T. ecaudatus continues well into the second half of overall gestation, resembling the pattern seen in other small mammals and differing markedly from the advanced state of ossification evident early in the gestation of elephants, sheep, and humans.
Hierarchical analysis of ontogenetic time to describe heterochrony and taxonomy of developmental stages
TLDR
A proof-of-concept hierarchical analysis of ontogenetic time using a set of four freshwater species displaying strongly divergent reproductive traits is produced, which allows to formally detect developmental heterochronies and might provide a baseline to name early life stages for any set of species.
Analyzing developmental sequences with Parsimov--a case study of cranial muscle development in anuran larvae.
TLDR
It is proposed that Parsimov has the potential, combined with other methods, to find evolutionary important changes and to aid the biological interpretation of these changes.
Normal development and experimental embryology: Edmund Beecher Wilson and Amphioxus.
  • James W E Lowe
  • Economics
    Studies in history and philosophy of biological and biomedical sciences
  • 2016
An irregular hourglass pattern describes the tempo of phenotypic development in placental mammal evolution
TLDR
It is demonstrated that variation in the timing of development decreased late in embryogenesis––when organ formation is highly active, resulting in an hourglass-like pattern for mammalian developmental evolution.
Timing of organogenesis support basal position of turtles in the amniote tree of life
TLDR
The development of a standard reference series of embryological events in amniotes should enable future improvements and expansion of sampling and thus the examination of other hypotheses about phylogeny and patterns of the evolution of land vertebrate development.
Discrete embryonic character variation uncovers hidden ecological adaptations in lacertid lizards
TLDR
Embryogenesis is the first step in the ontogenetic life journey of any individual, and is thus a starting point for natural selection to cause evolutionary change, and provides a platform to explore superficially hidden evolutionary adaptations of all organisms on Earth.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 105 REFERENCES
New directions in comparative embryology and the nature of developmental characters
TLDR
It is believed that some kind of anatomical framework will always be needed in comparative embryology, and the interplay between classical morphological characters, gene expression patterns and computing methodologies will be an exciting area for future work.
Comparative methods in developmental biology.
TLDR
It is clear that the application of phylogenetic methodology to developmental data is both necessary and fundamental to research into the relationship between evolution and development.
A history of normal plates, tables and stages in vertebrate embryology.
  • N. Hopwood
  • Biology
    The International journal of developmental biology
  • 2007
TLDR
The article highlights the Normal Plates of the Development of the Vertebrates edited by the German anatomist Franz Keibel, a major response to problems in the relations between ontogeny and phylogeny that amounted in practical terms to a crisis in staging embryos.
Analyzing evolutionary patterns in amniote embryonic development *
TLDR
Clear patterns of heterochrony are identified, which suggest that advanced heart development arose in evolutionary history before endothermy, and can be adapted to analyze other forms of comparative dynamic data, including patterns of developmental gene expression.
Some problems with typological thinking in evolution and development
TLDR
The aim in this article is to consider the manifestations of typologism in evolutionary developmental biology, and some of the problems associated with it.
Variation in anuran embryogenesis: differences in sequence and timing of early developmental events.
TLDR
A hypothetical ancestral sequence of developmental events is suggested, and the possible factors that could have caused the observed variations from the ancestral sequence are discussed.
A developmental staging series for the lizard genus Anolis: A new system for the integration of evolution, development, and ecology
TLDR
A new model system for the integration of development, evolution, and ecology, the lizard genus Anolis, a diverse group of lizards whose ecology and evolution is well understood, and whose genome has recently been sequenced is introduced.
Heterochrony and the phylotypic period.
TLDR
The morphological data relating to developmental timing in somite-stage embryos are reexamined and reveal striking patterns of heterochrony during vertebrate evolution.
There is no highly conserved embryonic stage in the vertebrates: implications for current theories of evolution and development
TLDR
It is found that embryos at the tailbud stage – thought to correspond to a conserved stage – show variations in form due to allometry, heterochrony, and differences in body plan and somite number, which foreshadow important differences in adult body form.
Inverting the hourglass: quantitative evidence against the phylotypic stage in vertebrate development
TLDR
It is hypothesize that numerous tightly delimited developmental modules exist during the mid–embryonic period and the high level of timing changes between these modules may be an important evolutionary mechanism giving rise to the diversity of vertebrates.
...
1
2
3
4
5
...