--Telocoxal spine long, with broad base, directed
aborally ochropygialis (Schubart, 1966)
The mean a and b axis radii as viewed
aborally for this ctenophore size class (n = 8) are 43 [micro]m and 40 [micro]m, respectively.
sowerbyi confirms that the
aborally positioned tentacles are in regions where deformation rates of the fluid are below the documented response thresholds of copepods (Figs.
According to this classification scheme, sensory structures are found in three general regions of the larval surface: (1) within a band of oligociliated cells called the supracoronal cells that are positioned cells called the supracoronal cells that are positioned
aborally to the coronal cells and bordered by the pallial epithelium, (2) between adjacent coronal cells are the intercoronal cells, and (3) within an unciliated (and often undifferentiated) band of cells called the infracoronal cells that are oral to the coronal cells.
The muscle fibers follow the curve of each pedalium, curling
aborally and terminating abruptly no more than halfway across the width of the pedalium.
Muscles are found only on the oral (upper) side of the fulcrum, whereas collagenous ligaments are found both orally and
aborally. When muscles on the oral side of the fulcrum contract, the arm bends in the oral direction.
Cilia within the pores tended to eject particles
aborally. The present work shows that a small proportion of minute particles (beads) suspended in the medium can still enter the pore canals of intact animals.
