The lamprey in evolutionary studies

@article{Osrio2008TheLI,
  title={The lamprey in evolutionary studies},
  author={Joana Os{\'o}rio and Sylvie R{\'e}taux},
  journal={Development Genes and Evolution},
  year={2008},
  volume={218},
  pages={221-235}
}
Lampreys are a key species to study the evolution of morphological characters at the dawn of Craniates and throughout the evolution of the craniate’s phylum. Here, we review a number of research fields where studies on lampreys have recently brought significant and fundamental insights on the timing and mechanisms of evolution, on the amazing diversification of morphology and on the emergence of novelties among Craniates. We report recent example studies on neural crest, muscle and the… 
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121 Citations

Lampreys, “Living Fossils,” in Research on Early Development and Regeneration in Vertebrates

Recent data on the molecular aspects of the early development of the telencephalon, early embryonic differentiation, and regeneration of lampreys are reviewed.

Neurodevelopment Genes in Lampreys Reveal Trends for Forebrain Evolution in Craniates

Systematic expression patterns comparisons with model organisms highlight conservations likely to reflect shared features present in the vertebrate ancestors and point to changes in signaling systems which may have been crucial in the evolution of forebrain anatomy at the origin of vertebrates.

The sea lamprey Petromyzon marinus: a model for evolutionary and developmental biology.

With the establishment of techniques for the extended maintenance and spawning of lampreys in the laboratory, the sequencing of the lamprey genome, and the adaptation and optimization of many established molecular biology and histochemistry techniques for use in this species, P. marinus is poised to become an evolutionary developmental model of choice.

Introduction: A Surfeit of Lampreys

A broad perspective on the cultural, ecological, and scientific importance of lampreys is provided, some historical trends in lamprey research are outlined, and the ­growing ­interest—among scientists and laypeople—in this previously underappreciated group of fishes is celebrated.

Chromosome‐level genome assembly of Lethenteron reissneri provides insights into lamprey evolution

This study assembled the first chromosome‐level reference genome for Cyclostomata and identified two neural‐related genes, Nrn1 and Unc13a, with copy number expansions in jawed vertebrates, which may be functionally relevant to the origin of lamprey brains.

Development and Organization of the Lamprey Telencephalon with Special Reference to the GABAergic System

This study summarizes the organization of the adult lamprey telencephalon by analyzing the main proposed conceptions, including the available data on the expression pattern of some developmental regulatory genes which are of importance for building its adult shape.

Midline signaling and evolution of the forebrain in chordates: a focus on the lamprey Hedgehog case.

Lampreys are agnathans (vertebrates without jaws). They occupy a key phylogenetic position in the emergence of novelties and in the diversification of morphology at the dawn of vertebrates. We have…

Evolution of the regionalization and patterning of the vertebrate telencephalon: what can we learn from cyclostomes?

Discovery of fossil lamprey larva from the Lower Cretaceous reveals its three-phased life cycle

The discovery of exceptionally preserved premetamorphic and metamorphosing larvae of the fossil lamprey Mesomyzon mengae from the Lower Cretaceous of Inner Mongolia, China are reported, indicating the three-phased life cycle in lampreys emerged essentially in their present mode no later than the Early Cret Jurassic.

Insights into Cyclostome Phylogenomics: Pre-2R or Post-2R

The hypothesis that two-round (2R) genome duplication events occurred before the divergence between cyclostomes and gnathostomes, and therefore that a post-2R state is a genomic synapomorphy for all extant vertebrates is focused on.
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References

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