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Morphology of Euclinostomum heterostomum (Rudolphi, 1809) Trematoda: Clinostomatidae) from Bulbicus ibis

Published online by Cambridge University Press:  05 June 2009

Emmet A. Dennis  and
Marian Sharp
Emmet A. Dennis
Affiliation:
Department of Zoology andThe Bureau of Biological Research Rutgers UniversityNew Brunswick, New Jersey, U.S.A.
Marian Sharp
Affiliation:
Department of Zoology andThe Bureau of Biological Research Rutgers UniversityNew Brunswick, New Jersey, U.S.A.
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Extract

Adult stages of Euclinostomum heterostomum (Rudolphi, 1809) were collected from the oral cavity and oesophagus of Bulbicus ibis in Liberia, West Africa. Structural relationships within the trematodes are clarified. A prepharynx from the oral sucker leads to a well developed pharynx to which the intestinal caeca communicate via a bulb-shaped oesophagus. The origin and extent of gonadal ducts are described including a Laurer's canal, whose aperture is dorsal. A discussion of the characters previously used to differentiate species of Euclinostomum corroborates the views expressed by Ukoli (1996) that the genus consists of two distinct species, E. heterostomum (Rudolphi, 1809) and E. multacaecum Tubangui and Maslungan, 1935. E. shrjabini Kurashvili, 1948 is proposed as a synonym of E. heterostomum. A compilation of the range in measurements of the adult and metacercarial stages of E. heterostomum is presented in the form of a table.

Type
Research Article
Information
Journal of Helminthology , Volume 47 , Issue 1 , March 1973 , pp. 17 - 25
Copyright
Copyright © Cambridge University Press 1973

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