Fine structure of ocelli in larvae of an archiannelid, Polygordius cf. appendiculatus

@article{Brandenburger2004FineSO,
  title={Fine structure of ocelli in larvae of an archiannelid, Polygordius cf. appendiculatus},
  author={Jean L. Brandenburger and Richard M. Eakin},
  journal={Zoomorphology},
  year={2004},
  volume={99},
  pages={23-36}
}
The ocelli of trochophore and segmented larvae of the archiannelid Polygordius cf. appendiculatus were studied by electron microscopy. An eye consists of two pigmented supportive cells forming an eyecup that encloses one sensory cell bearing one (trochophore) or two (segmented larva) ranks of microvilli and one adventitious cilium. Remarkably abundant tubules (submicrovillar endoplasmic reticulum) radiate from the perinuclear region of the sensory cell, which lies outside the ocellus, toward… CONTINUE READING

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