Evolution of the ascidian anural larva: evidence from embryos and molecules.

@article{Jeffery1999EvolutionOT,
  title={Evolution of the ascidian anural larva: evidence from embryos and molecules.},
  author={William R Jeffery and Billie J. Swalla and Nigel Ewing and Takashi Kusakabe},
  journal={Molecular biology and evolution},
  year={1999},
  volume={16 5},
  pages={646-54}
}
Most ascidians pass through a tadpole (urodele) larval stage, although some species have derived a tailless (anural) larva. New insights into the evolution of anural larvae in the Roscovita clade of molgulid ascidians were obtained from studing embryonic development of the transitional anural species Molgula bleizi and from phylogenetic analysis based on muscle and cytoskeletal actin gene sequences. By observing in vitro fertilized eggs, we found that M. bleizi, previously described as a… CONTINUE READING

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