The History of Scientific Endeavors Towards Understanding Hagfish Embryology

@inproceedings{Ota2006TheHO,
  title={The History of Scientific Endeavors Towards Understanding Hagfish Embryology},
  author={Kinya G Ota and Shigeru Kuratani},
  booktitle={Zoological science},
  year={2006}
}
Abstract Due to their curious phylogenetic position and anatomy, hagfishes have attracted the interest of zoologists, especially in the context of vertebrate evolution. Embryological information on these animals is now also needed in the field of evolutionary developmental biology (Evo-Devo), as it is expected to provide hints about the origin of vertebrate traits, whether the hagfishes are an in- or outgroup of vertebrates. This review summarizes the importance of hagfish embryology from a… Expand
Hagfish (cyclostomata, vertebrata): Searching for the ancestral developmental plan of vertebrates
  • S. Kuratani, K. Ota
  • Biology, Medicine
  • BioEssays : news and reviews in molecular, cellular and developmental biology
  • 2008
TLDR
It is concluded that the delaminating neural crest is a vertebrate synapomorphy that seems to have appeared from the beginning of their evolutionary history, before the splitting away of the hagfish lineage. Expand
Cyclostome embryology and early evolutionary history of vertebrates.
TLDR
Comparison of the lamprey and gnathostome developmental patterns suggests some plesiomorphic traits of vertebrates that would have already been established in the most recent common ancestor of the vertebrates. Expand
Hagfish embryos again: the end of a long drought.
  • N. Holland
  • Biology, Medicine
  • BioEssays : news and reviews in molecular, cellular and developmental biology
  • 2007
TLDR
Because hagfish embryos should now be available on a regular basis, the way is open for additional morphological and developmental genetic investigations to help evaluate existing evolutionary scenarios and perhaps suggest new ones. Expand
Development of the Chondrocranium in Hagfishes, with Special Reference to the Early Evolution of Vertebrates
TLDR
It is shown that the hagfish and lamprey chondrocrania can be compared perfectly at the level of modules corresponding to the craniofacial primordia constituting the cyclostome morphotype and its diversification in early vertebrate evolution. Expand
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TLDR
The developmental processes involved in some important morphological traits, including the neural crest, placode, pharyngeal arches, and others, are examined and it is revealed that some apparently primitive morphological trait can be regarded as artifacts deriving mainly from fixation conditions. Expand
Hagfish embryology with reference to the evolution of the neural crest
TLDR
It is proposed that the neural crest emerged as a population of de-epithelialized migratory cells in a common vertebrate ancestor, and it is suggested that the possibility of classical and molecular embryology in hagfish opens up new approaches to clarifying the evolutionary history of vertebrates. Expand
Developmental biology: Led by the nose
TLDR
The authors identify an embryonic development pattern shared only by the jawless lampreys and hagfish that may have been primitive for all vertebrates that help to trace the evolution of vertebrate cranial structure. Expand
Cyclostome Studies in the Context of Vertebrate Evolution
TLDR
Key research topics from the symposium that continue to advance are summarized, including genomic data that have spurred renewed interest in gene duplications and their contribution to the authors' understanding of cyclostome phylogeny and vertebrate evolution; the use of paleontology coupled with modern imaging techniques to clarify vertebrate phylogeny; and the evolution of the neuroendocrine and adaptive immune systems. Expand
The lamprey in evolutionary studies
TLDR
It is described how changes in signaling, neurogenesis or neuronal migration patterns during brain development may be at the origin of some important differences observed between lamprey and gnathostome brains. Expand
Evolution of the regionalization and patterning of the vertebrate telencephalon: what can we learn from cyclostomes?
TLDR
A possible ancestral developmental plan underlying the diversification of the vertebrate telencephalon is illustrated by comparing detailed developmental studies in mammals and possible approaches for understanding the early evolution of the telENCEphalon are proposed. Expand
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