Hostname: page-component-7bb8b95d7b-w7rtg Total loading time: 0 Render date: 2024-09-19T07:07:49.666Z Has data issue: false hasContentIssue false
  • English
  • Français

Scanning electron microscopy of the collar region of Deropristis inflata and Echinostoma revolutum

Published online by Cambridge University Press:  11 April 2024

I. Kanev ,
B.S. Dezfuli ,
M. Nestorov  and
B. Fried
I. Kanev
Affiliation:
Institute of Experimental Pathology and Parasitology, Bulgarian Academy of Science, Bl. 25, Sofia 1113, Bulgaria
B.S. Dezfuli
Affiliation:
Dipartimento di Biologia Evolutiva, Universita di Ferrara Via L. Borsari, 46, 44100 Ferrara, Italy
M. Nestorov
Affiliation:
Institute of Experimental Pathology and Parasitology, Bulgarian Academy of Science, Bl. 25, Sofia 1113, Bulgaria
B. Fried
Affiliation:
Department of Biology, Lafayette College, Easton, PA 18042, USA
Get access Rights & Permissions [Opens in a new window]

Abstract

Scanning electron microscopy (SEM) was used to study the collar region of Deropristis inflata (Molin, 1858), an intestinal digenean of fish, and Echinostoma revolutum (Froelich, 1802), an intestinal digenean of birds. The results showed basic differences in the following morphological features. The collar of D. inflata was open ventrally and dorsally whereas that of E. revolutum was closed dorsally and ventrally, forming a kidney-like ring. The collar of D. inflata was located posterior to the oral sucker, some distance behind the anterior end of the body. That of E. revolutum was located terminally around the oral sucker. The collar of D. inflata had numerous collar spines which varied in size, shape and position. That of E. revolutum had 37 collar-spines, mainly homogenous in their general morphology and with a typical arrangement pattern for 37-collar-spined echinostomes. The collar of D. inflata had few tegumentary papillae whereas that of E. revolutum had abundant papillae. A ventral depressed area occurred in D. inflata, between the acetabulum and oral sucker, dividing the collar into two left and right independent parts. The ventral depression in E. revolutum extended from the ventral sucker to the posterior end of the collar, and was not divided. In D. inflata, tegumentary spines were located on the oral sucker, and the collar was posterior to the sucker. In E. revolutum, the oral sucker and the collar lacked tegumentary spines. The region immediately posterior to the collar also lacked spines in E. revolutum. The collar pattern of D. inflata is undoubtedly more primitive than that of E. revolutum.

Type
Research Article
Information
Journal of Helminthology , Volume 73 , Issue 1 , January 1999 , pp. 51 - 57
Copyright
Copyright © Cambridge University Press 1999

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

*

H. W. Manter Laboratory of Parasitology, W-529 Nebraska Hall, University of Nebraska-Lincoln, Nebraska 68588-0514 USA.

References

Dezfuli, B.S., Fioravanti, M.L., Onestini, S. & Rossi, R. (1992) Deropristis inflata (Plathyhelminthes: Digenea) parasite of Anguilla anguilla (L): morphology of parasite and intestinal pathology of host. Parasitologia 34, 205–206.Google Scholar
Dietz, E. (1909) Die Echinostomiden der Vogel. Inaugural-Dissertation, Konigsberg.Google Scholar
Dobbs, G.H. (1972) A method for preservation of soft tissues of marine teleosts for scanning electron microscopy.Tissue and Cell 4, 687–690.CrossRefGoogle Scholar
Donovick, R.A. & Fried, B. (1988) Scanning electron microscopy of Echinostoma revolutum and E. liei from domestic chicks.Journal of the Pennsylvania Academy of Science 62, 78–82.Google Scholar
Fried, B. & Fujino, T. (1984) Scanning electron microscopy of Echinostoma revolutum (Trematoda) during development in the chick embryo and the domestic chickInternational. Journal for Parasitology 14, 75–85.Google Scholar
Fried, B., Irwin, S.W.B. & Lowry, S.F. (1990) Scanning electron microscopy of Echinostoma trivolvis and E. caproni (Trematoda) adults from experimental infections in the golden hamster.Journal of Natural History 24, 433–440.CrossRefGoogle Scholar
Fujino, T., Fried, B. & Hosier, D.W. (1995) The expulsion of Echinostoma trivolvis (Trematoda) from ICR mice: extension/retraction mechanisms and ultrastructure of the collar spines. Parasitology Research 80, 581–587.CrossRefGoogle Scholar
Kanev, I. (1985) On the morphology, biology, ecology and taxonomy of Echinostoma revolutum group (Trematoda: Echinostomatidae: Echinostoma). DSc thesis, Bulgarian Academy of Sciences, Sofia, 467 pp. (in Bulgarian with English summary).Google Scholar
Kanev, I. (1994) Life cycle, delimitation and redescription of Echinostoma revolutum (Froelich, 1802) (Trematoda: Echinostomatidae). Systematic Parasitology 28, 125–144.CrossRefGoogle Scholar
Kruse, D.M., Hosier, D.W. & Fried, B. (1992) The expulsion of Echinostoma trivolvis (Trematoda) from ICR mice:scanning electron microscopy of the worms. Parasitology Research 78, 74–77.CrossRefGoogle ScholarPubMed
Odhner, TH. (1902) Trematoden aus Reptilien nebst allgemeinen systematischen Bemerkungen. Vetenskaps-Akademiens Forhandlingar. Stockholm 1, 19–45.Google Scholar
Skrjabin, K.I. (1958) Trematodes of animals and man. Essentials of trematodology. Vol. 15, Izdatelstvo Akademiia Nauk SSSR, pp. 33–37.Google Scholar
Smales, L.R. & Blankespoor, H.D. (1984) Echinostoma revolutum(Froelich, 1802) Loos, 1899 and (Schrank, 1788) Luhe, 1909 (Echinostomatidae, Digenea): scanning electron microscopy of the tegumental surfaces.Journal of Helminthology 58, 187–195.CrossRefGoogle Scholar
Ursone, R.L. & Fried, B. (1995) Light and scanning electron microscopy of Echinostoma caproni (Trematoda) during maturation in ICR mice. Parasitology Research 81, 45–51.CrossRefGoogle ScholarPubMed
Yamaguti, S. (1971) Synopsis of digenetic trematodes of vertebrates . Vol. 1. p. 122. Tokyo, Japan, Keigaku Publishing Co.Google Scholar