Ultrastructure of mesoderm formation and development in Membranipora membranacea (Bryozoa: Gymnolaemata)

@article{Gruhl2009UltrastructureOM,
  title={Ultrastructure of mesoderm formation and development in Membranipora membranacea (Bryozoa: Gymnolaemata)},
  author={Alexander Gruhl},
  journal={Zoomorphology},
  year={2009},
  volume={129},
  pages={45-60}
}
Mesoderm origin in Bryozoa is largely unknown. In this study, embryonic and early larval stages of Membranipora membranacea, a bryozoan exhibiting a planktotrophic cyphonautes larva, are investigated using mainly ultrastructural techniques. Shortly after the onset of gastrulation, an ectodermal cell, which is situated centrally at the prospective anterior pole of the larva, can be recognized by its constricted apical surface and enlarged basal part. It is also distinct from other ectodermal… CONTINUE READING