Ascidian Larvae and the Events of Metamorphosis

@article{Cloney1982AscidianLA,
  title={Ascidian Larvae and the Events of Metamorphosis},
  author={Richard A. Cloney},
  journal={Integrative and Comparative Biology},
  year={1982},
  volume={22},
  pages={817-826}
}
  • R. A. Cloney
  • Published 1 November 1982
  • Geology
  • Integrative and Comparative Biology
SYNOPSIS. Ascidian larvae settle and metamorphose after only a brief free—swimming period; they are all lecilhotrophic. Extrinsic factors (chemical and physical) may trigger metamorphosis but none are known to be essential. The major larval structures may be classified as transitory larval organs (TLO), prospective juvenile organs (PJO) or larvaljuvenile organs (LJO). TLO are phagocytized or otherwise destroyed at metamorphosis; the PJO and LJO become the functional parts of the juvenile or… 
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Differential screening between mRNAs of swimming larvae and those of juveniles in Ciona intestinalis allowed the isolation of cDNA clones for genes whose expression is upregulated during metamorphosis, and the characterization of four genes (Ci-meta3, Ci-meta4, CI-meta5 and Ci- meta6) is reported here.
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It is a rather strange coincidence that so many different factors have similar effects in either inhibiting or accelerating the onset of metamorphosis in widely divergent groups. Of these factors the
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The effective range of concentration of cytochalasin B which prevents tail resorption exhibited a striking phylogenetic correlation.
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TLDR
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