Biol. Bull. Sign up for etocs!
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Biol Bull 131: 437-445. (December 1966)
© 1966 Marine Biological Laboratory
This Article
Right arrow Full Text (PDF) Free
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by DILLER, W. F.
Right arrow Articles by KOUNARIS, D.
Right arrow Search for Related Content
PubMed
Right arrow Articles by DILLER, W. F.
Right arrow Articles by KOUNARIS, D.

DESCRIPTION OF A ZOOCHLORELLA-BEARING FORM OF EUPLOTES, E. DAIDALEOS N. SP. (CILIOPHORA HYPOTRICHIDA)

WILLIAM F. DILLER 1 and DEMETRIUS KOUNARIS 1

1 Department of Biology, University of Pennsylvania, Philadelphia, Pa. 19104

1. Euplotes daidaleos n. sp. is described as a hitherto unrecognized species. It is a fresh-water form found in Philadelphia, Pa., and appears to be closely related to E. patella, differing from it in shape and size, in the possession of zoochlorellae and possibly in the structure of the peristome.

2. Diagnostic characteristics: Fresh-water. Contains zoochlorellae (few to 100). Average length 92µ, width 57µ. Body flattened, oval in face view; right anterior margin straighter than the more convex shoulder on the left side; posterior end bluntly pointed. Buccal cavity (peristome) extending slightly beyond middle of body. Adoral membranelles approximately 40, arranged in a smooth curve terminating on the right edge of the collar. Right edge of the peristome an almost straight wall originating as an extension of the ventral ridge at the left of the anal cirri; undercut so as to form a narrow lip, anterior to the paroral membranelles; attached to it and the dorsal wall of the buccal cavity is a low bulge partly occluding the cavity. Between this bulge and the elongated triangular peristomal plate on the left anterior side of the buccal cavity is a trough or channel expanded anteriorly as well as posteriorly in the region of the paroral membraelles. The latter delimit the endoplasmic sac on the right. Eighteen cirri: six frontals three ventrals, five anals and four caudals, two of the latter on the right side tending to be fimbriated. Meganucleus C-shaped. Nine latero-dorsal rows of bristles, corresponding in position to the dorsal ridges (the left one distinctly ventral). Between each dorsal "kinety" are two rows of alternating wider and narrower polygons, revealed by silver impregnation techniques. The dorsal bristles lie on the right border of the wide rows and to the left of the narrow rows.

3. Conjugation is common in the stocks of E. daidaleos examined. Encystment has not been found.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1966 by the Marine Biological Laboratory.