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Scanning electron microscopy of newly excysted juvenile and adult Cyclocoelum mutabile (Digenea)

Title:

Scanning electron microscopy of newly excysted juvenile and adult Cyclocoelum mutabile (Digenea)

Tajrine, D.D. and Kapoor, N.N. and McLaughlin, J. Daniel (1999) Scanning electron microscopy of newly excysted juvenile and adult Cyclocoelum mutabile (Digenea). Canadian Journal of Zoology, 77 (7). pp. 1111-1116. ISSN 0008-4301

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Official URL: http://dx.doi.org/10.1139/cjz-77-7-1111

Abstract

In this study, changes were examined in surface structures and tegumental morphology of newly excysted, migrating, and adult Cyclocoelum mutabile obtained from experimentally infected coots (Fulica americana). Newly excysted juveniles were spinous and had two large depressions situated at the anterior tip of the body and a large acetabulum. Small papillae were scattered around the mouth region and also formed a row that encircled the anterior end of the fluke. Four groups of larger papillae, two ventrolateral and two lateral, originated from points slightly posterior to the mouth region. The two ventrolateral bands of papillae terminated slightly posterior to the acetabulum; the two lateral rows of papillae terminated about three-quarters of the length along the specimen. Six large multilobed papillae were associated with the acetabulum. Juveniles migrating through the liver lost the spines and papillae by day 6, but the anterior depressions persisted into the adult stage. The tegument of 6- and 12-day-old flukes was smooth with a varying number of transverse folds. The tegument of 15-day-old specimens from the body cavity ranged in appearance from folded and pitted to reticulate. The reticulations were more prominent in adults and the entire body was covered with a reticulate pattern of loculus-like structures that are believed to aid in the movement of the flukes within the air sacs of the coot host.

Divisions:Concordia University > Faculty of Arts and Science > Biology
Item Type:Article
Refereed:Yes
Authors:Tajrine, D.D. and Kapoor, N.N. and McLaughlin, J. Daniel
Journal or Publication:Canadian Journal of Zoology
Date:July 1999
Funders:
  • Natural Sciences and Engineering Research Council of Canada
  • Concordia University
ID Code:6783
Deposited By:DANIELLE DENNIE
Deposited On:13 Jul 2010 12:24
Last Modified:08 Dec 2010 18:06
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