181
Fig. 2.23 Schematic longitudinal sections of hyperstomial acleithral
ovicells in: ( A ) Bryocalyx cinnameus (terminal ovicell); ( B ) Concertina
cultrata (From Ostrovsky et al. 2009a , courtesy of Springer Verlag,
http://link.springer.com/article/10.1007/s00435-008-0070-8 ).
Abbreviations: bc brood cavity, dk distal kenozooid, ес ectooecium, en
entooecium, fm membranous frontal wall, m muscle strands of ooecial
vesicle, mz maternal zooid, oc ooecial coelom, of ovicell fl oor, op operculum, os oral spine, tw transverse wall, v ooecial vesicle
Fig. 2.24 Schematic longitudinal section of subimmersed cleithral
ovicell in Valdemunitella lata ( arrowhead indicates horizontal slit of
ooecium, arrow indicates communication pore of an ooecial lobe plugged
by non-specialized epithelial cells) (From Ostrovsky et al. 2009a , courtesy of Springer Verlag, http://link.springer.com/article/10.1007/s00435008-0070-8 ). Abbreviations: bc brood cavity, bcw brood-cavity wall, bw
basal wall, cr cryptocyst, dz distal zooid, ес ectooecium, en entooecium,
fm frontal membranous wall, m muscle strands of ooecial vesicle, mz
maternal zooid, oc ooecial coelom, of ovicell fl oor, op operculum, sc
sclerite of ooecial vesicle, tw transverse wall, v ooecial vesicle
Figures
Fig. 2.23 Schematic longitudinal sections of hyperstomial acleithral
ovicells in: ( A ) Bryocalyx cinnameus (terminal ovicell); ( B ) Concertina
cultrata (From Ostrovsky et al. 2009a , courtesy of Springer Verlag,
http://link.springer.com/article/10.1007/s00435-008-0070-8 ).
Abbreviations: bc brood cavity, dk distal kenozooid, ес ectooecium, en
entooecium, fm membranous frontal wall, m muscle strands of ooecial
vesicle, mz maternal zooid, oc ooecial coelom, of ovicell fl oor, op operculum, os oral spine, tw transverse wall, v ooecial vesicle
Fig. 2.24 Schematic longitudinal section of subimmersed cleithral
ovicell in Valdemunitella lata ( arrowhead indicates horizontal slit of
ooecium, arrow indicates communication pore of an ooecial lobe plugged
by non-specialized epithelial cells) (From Ostrovsky et al. 2009a , courtesy of Springer Verlag, http://link.springer.com/article/10.1007/s00435008-0070-8 ). Abbreviations: bc brood cavity, bcw brood-cavity wall, bw
basal wall, cr cryptocyst, dz distal zooid, ес ectooecium, en entooecium,
fm frontal membranous wall, m muscle strands of ooecial vesicle, mz
maternal zooid, oc ooecial coelom, of ovicell fl oor, op operculum, sc
sclerite of ooecial vesicle, tw transverse wall, v ooecial vesicle
Figures