Результаты исследований: Материалы конференций › тезисы
Tentacle structure in bryozoans. / Tamberg, Yuta; Shunatova, Natalia.
2014. 254 Реферат от 3rd International Congress on Invertebrate Morphology, Berlin, Германия.Результаты исследований: Материалы конференций › тезисы
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TY - CONF
T1 - Tentacle structure in bryozoans
AU - Tamberg, Yuta
AU - Shunatova, Natalia
PY - 2014
Y1 - 2014
N2 - Brozoans employ ciliated tentacles for feeding. Phylactolaemate lophophores are usually horseshoe-shaped and support up to 100 tentacles. In gymnolaemate species 30 or less tentacles are arranged in a ring. We studied tentacle ultrastructure of 3 freshwater and 9 marine (4 chelostome, 2 ctenostome, 3 cyclostome) species with light and transmission electron microscopy. Tentacles of these species share a common basic design: a hollow tube of basal lamina, covered with epithelium and lined with coelothelium. Tentacles support 5 continuous (frontal, 2 lateral-frontal, 2 lateral) ciliary bands in phylactolaemates and cteno-cheilostomes but 4 in cyclostomes, the latter lacking frontal band. Epithelial cells are arranged in longitudinal rows and their number is inflexible: in all groups there is one abfrontal intermittent row of cells (bearing tufts or single rigid cilia and sending processes into the abfrontal nerve bundle) and also 9 in gymnolaemates, or 11 in phylactolaemates, continuous rows. In all groups, two
AB - Brozoans employ ciliated tentacles for feeding. Phylactolaemate lophophores are usually horseshoe-shaped and support up to 100 tentacles. In gymnolaemate species 30 or less tentacles are arranged in a ring. We studied tentacle ultrastructure of 3 freshwater and 9 marine (4 chelostome, 2 ctenostome, 3 cyclostome) species with light and transmission electron microscopy. Tentacles of these species share a common basic design: a hollow tube of basal lamina, covered with epithelium and lined with coelothelium. Tentacles support 5 continuous (frontal, 2 lateral-frontal, 2 lateral) ciliary bands in phylactolaemates and cteno-cheilostomes but 4 in cyclostomes, the latter lacking frontal band. Epithelial cells are arranged in longitudinal rows and their number is inflexible: in all groups there is one abfrontal intermittent row of cells (bearing tufts or single rigid cilia and sending processes into the abfrontal nerve bundle) and also 9 in gymnolaemates, or 11 in phylactolaemates, continuous rows. In all groups, two
KW - Bryozoa
KW - tentacle structure
KW - morphology
M3 - Abstract
SP - 254
T2 - 3rd International Congress on Invertebrate Morphology
Y2 - 3 August 2014 through 7 August 2014
ER -
ID: 6823211