80
Fig. 1.8 Structure of the ovary and oogenesis in Cauloramphus spinifer .
( A ) Bilayered early polypide bud with oogonia. ( B ) Developing polypide with early ovary ( arrowed ). ( C ) Ovary with early vitellogenic doublet
(note yolk granules in nurse-cell cytoplasm). ( D ) Vitellogenic doublet
( inset : magnifi ed nurse cell). Abbreviations: bw basal wall, nc nurse cell,
o oocyte, og oogonia, p polypide, pb polypide bud. Scale bars: A – D ,
20 μm; inset 10 µm
1 Reproductive Patterns of Gymnolaemate Bryozoa: General Overview and Comparative Analysis
Fig. 1.8 Structure of the ovary and oogenesis in Cauloramphus spinifer .
( A ) Bilayered early polypide bud with oogonia. ( B ) Developing polypide with early ovary ( arrowed ). ( C ) Ovary with early vitellogenic doublet
(note yolk granules in nurse-cell cytoplasm). ( D ) Vitellogenic doublet
( inset : magnifi ed nurse cell). Abbreviations: bw basal wall, nc nurse cell,
o oocyte, og oogonia, p polypide, pb polypide bud. Scale bars: A – D ,
20 μm; inset 10 µm
1 Reproductive Patterns of Gymnolaemate Bryozoa: General Overview and Comparative Analysis