Evolution of Intragonadal Development in the Diminutive Asterinid Sea Stars Patiriella vivipara and P. parvivipara with an Overview of Development in the Asterinidae.

@article{Byrne1996EvolutionOI,
  title={Evolution of Intragonadal Development in the Diminutive Asterinid Sea Stars Patiriella vivipara and P. parvivipara with an Overview of Development in the Asterinidae.},
  author={Maria Byrne and Anna Cerra},
  journal={The Biological bulletin},
  year={1996},
  volume={191 1},
  pages={17-26}
}
The diminutive asterinid sea stars Patiriella vivipara and P. parvivipara incubate their embryos in the gonads to the advanced juvenile stage. Despite the small size of their eggs (135-150 μm diameter), development is lecithotrophic. Development proceeds through the wrinkled blastula, gastrula, and brachiolaria larval stages. The gastrulae and larvae are uniformly ciliated and swim, propelled by the cilia, in the gonadal fluid. The brachiolaria is pear-shaped and has a vestigial brachiolar… CONTINUE READING

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