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Fig. 1.4 Young ovary and early oogenesis in Callopora lineata .
( A ) Oogonium ( arrowed ) in ovary of young zooid with a fully formed but
prefunctional polypide. ( B ) Early previtellogenic oocyte doublet in
the same zooid. ( C ) Division of oogonium in ovary with adjacent
brown body. ( D ) Ovary with early vitellogenic oocyte and mature oogonium.
Abbreviations: bb brown body, bw basal wall, fm frontal membrane
lw lateral wall, o vitellogenic oocyte, og oogonium, ov ovarian cells,
pd previtellogenic doublet, tw transverse wall. Scale bars: A – D , 10 μm
1 Reproductive Patterns of Gymnolaemate Bryozoa: General Overview and Comparative Analysis
Fig. 1.4 Young ovary and early oogenesis in Callopora lineata .
( A ) Oogonium ( arrowed ) in ovary of young zooid with a fully formed but
prefunctional polypide. ( B ) Early previtellogenic oocyte doublet in
the same zooid. ( C ) Division of oogonium in ovary with adjacent
brown body. ( D ) Ovary with early vitellogenic oocyte and mature oogonium.
Abbreviations: bb brown body, bw basal wall, fm frontal membrane
lw lateral wall, o vitellogenic oocyte, og oogonium, ov ovarian cells,
pd previtellogenic doublet, tw transverse wall. Scale bars: A – D , 10 μm
1 Reproductive Patterns of Gymnolaemate Bryozoa: General Overview and Comparative Analysis