GIGANTOCOTYLE EXPLANATUM (CREPLIN, 1847) (TREMATODA: PARAMPHISTOMIDAE) FROM DAMALISCUS ALBIFRONS (BURCHELL, 1823) by J. JANSEN, J. PA � ENOVSKY and I. KRUPICER (Institute of Veterinary Parasitology and Parasitic Diseases, Utrecht, The Netherlands. Institute of Helminthology of the Slovak Academy of Sciences, Košice, Czechoslovakia.) INTRODUCTION All paramphistomid species found in ruminants in western Europe belong to one genus Paramphistomum Fischoeder, 1901 (a.o. NASMARK, 1937; WILLMOTT, 1950; KOTLAN, 1960). One can find, however, interesting species at post mortems of exotic zoo-animals. We received a sample of Paramphistomidae from the rumen of an African blesbok, Damaliscus albifrons, which died in the Rotterdam Zoo "Blijdorp". Using the histological techniques necessary for this group of trema- todes and the data given by NKSMARK (1937) the specimens could be determined as Gigantocotyle explanatum (CREPLIN, 1847). . DESCRIPTION The length of the body (fig. 1), which is pear-shaped, is 7.6-8.2 mm. Its breadth is 4.7-5.1 mm. The acetabulum is of the explanatum type (fig. 2), which means that the dorsal exterior circular layer (D.e.) of the musculature is divided into two groups D.e.l. and D.e.2. The D.e.l. is formed by 20-25 strong muscle-units whereas the D.e.2. is formed by 20-26 very small units. The number of
Netherlands Journal of Zoology (in 2003 continued as Animal Biology) – Brill
Published: Jan 1, 1973
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