As a result of an investigation of metazoan parasites of elasmobranch fishes in the Gulf of Gabès, Tunisia, we discovered 2 new species of diphyllidean cestodes. Macrobothridium euterpes n. sp. is described from the spiral intestine of Rhinobatos rhinobatos, and Macrobothridium syrtensis n. sp. from the spiral intestine of Rhinobatos cemiculus. Macrobothridium euterpes is distinguished from the only other species in the genus (Macrobothridium rhynchobati) by the number of rostellar hooks, size, genital pore position, vagina position, and ovary shape. Macrobothridium syrtensis is distinguished from M. rhynchobati by the hook morphology, testis number, and overall size, and from M. euterpes by the number of rostellar hooks, testis number, genital pore position, vagina position, and ovary shape. These are the first 2 species added to the genus since its establishment in 1989. A standardized formula for representing the number and arrangement of rostellar hooks in diphyllidean species is presented.
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June 2001
SYSTEMATICS-PHYLOGENETICS|
June 01 2001
Two New Species of Macrobothridium (Cestoda: Diphyllidea) from Rhinobatid Elasmobranchs in the Gulf of Gabès, Tunisia, with Notes on the Status of the Genus
LASSAD NEIFAR;
LASSAD NEIFAR
Département de Biologie, Faculté des Sciences de Sfax, 3018 Sfax, Tunisie; and Laboratoire de Biologie et Parasitologie Marines, Faculté des Sciences de Tunis, 2092 Tunis, Tunisie
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GAINES A. TYLER;
GAINES A. TYLER
Département de Biologie, Faculté des Sciences de Sfax, 3018 Sfax, Tunisie; and Laboratoire de Biologie et Parasitologie Marines, Faculté des Sciences de Tunis, 2092 Tunis, Tunisie
*To whom correspondence should be addressed at: Department of Ecology and Evolutionary Biology, University of Connecticut, 75 N. Eagleville Rd., Storrs, Connecticut 06269-3043.
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LOUIS EUZET
LOUIS EUZET
Département de Biologie, Faculté des Sciences de Sfax, 3018 Sfax, Tunisie; and Laboratoire de Biologie et Parasitologie Marines, Faculté des Sciences de Tunis, 2092 Tunis, Tunisie
†Station Méditerranéenne de l'Environnement Littoral, Université Montpellier II, 1 Quai de la Daurade, 34200 Sète, France.
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J Parasitol (2001) 87 (3): 673–680.
Citation
LASSAD NEIFAR, GAINES A. TYLER, LOUIS EUZET; Two New Species of Macrobothridium (Cestoda: Diphyllidea) from Rhinobatid Elasmobranchs in the Gulf of Gabès, Tunisia, with Notes on the Status of the Genus. J Parasitol 1 June 2001; 87 (3): 673–680. doi: https://doi.org/10.1645/0022-3395(2001)087[0673:TNSOMC]2.0.CO;2
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