Viviparity in the Sea Star Cryptasterina hystera (Asterinidae)—Conserved and Modified Features in Reproduction and Development

  title={Viviparity in the Sea Star Cryptasterina hystera (Asterinidae)—Conserved and Modified Features in Reproduction and Development},
  author={Maria Byrne},
  journal={The Biological Bulletin},
  pages={81 - 91}
  • M. Byrne
  • Published 1 April 2005
  • Biology
  • The Biological Bulletin
Cryptasterina hystera has a highly derived life history with intragonadal development and juveniles that emerge from the parent’s reproductive tract. The gonads are ovotestes with developing eggs separated from sperm by follicle cells. C. hystera has typical echinosperm that must enter the gonoduct of conspecifics to achieve fertilization. During oogenesis, an initial period of yolk accumulation is followed by hypertrophic lipid deposition, the major contributor to the increase in egg size. 1… 

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