Cnidarian Characters
Cnidarian characteristics of the myxozoan Thelohanellus nikolskii.
Structures seen in the development of the so-called "polar capsule" of
Thelohanellus
nikolskii labeled in accordance with the homologous structure in
cnidarian nematocysts.
Figures A through D represent the earliest
stage in cellular ontogeny through to that of the mature nematocyst respectively.
c, cnidocyte; pt, preinverted tubule;
np, nematocyst primordium; s,
differentiating sporogenic cells. Scale bar = 1 um.
c, cnidocyte; pt, preinverted tubule;
np, nematocyst primordium; th, tubular
thread; Scale bar = 1 um.
c, cnidocyte; np, nematocyst primordium;
it, inverted tubule; s, differentiating
sporogenic cells. Scale bar = 1 um.
c, cnidocyte; ai, atrichous izorhiza,
sh, shaft of atrichous izorhiza; op, opercular
cap of atrichous izorhiza; N, mature nematocyst; Scale bar = 1
um.
The findings presented herein are
under the the title THE DEMISE OF A PHYLUM OF PROTISTS: PHYLOGENY OF
MYXOZOA AND OTHER PARASITIC CNIDARIA. by Mark E. Siddall, Donald S.
Martin, Diane Bridge, Sherwin S. Desser, and David K. Cone. None of the figures or data
presented here can be reproduced without the consent of the authors or of
the Journal of Parasitology.