Zeitschrift für Parasitenkunde

, Volume 69, Issue 6, pp 789–796 | Cite as

Larval stages of digenetic trematodes ofTheodoxus jordani (Sowerby 1836) snails from Yarmouk River, Jordan

  • Sami K. Abdel-Hafez
  • Naim S. Ismail
Original Investigations


Two types of cercariae are described from the freshwater prosobranchTheodoxus jordani (Sowerby 1836) collected from the Yarmouk River during 1982: a tail-less cercaria belonging to themutabile group and a microcercous cercaria belonging to theCercaria brachyura group. These two cercariae were given the namesCercaria theodoxi I andC. theodoxi II, respectively. Details are presented on the morphology and behaviour of the cercariae as well as on their development within the snail. The relationships between these cercariae and adult trematodes reported from Jordan are discussed.


Larval Stage Digenetic Trematode Adult Trematode 
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  1. Dagan D (1971) Taxońomic discrimination between certain species of the genusTheodoxus (Gastropoda, Neritidae). Israel J Zool 20:223–229Google Scholar
  2. Dawes B (1968): The Trematodes. Cambridge Univ Press London 644 ppGoogle Scholar
  3. Dubois G (1929) Les cercaires de la région de Neuchâtel. Bull Soc Neuchâtel Sci Nat 53:1–177Google Scholar
  4. Filippi P de (1954) Mémoire pour servir à l'histoire génétique des trematodes. Ann Sci Nat Zool Ser 4(2):255–284Google Scholar
  5. Heller J (1979) Visual versus non-visual selection of shell colour in an israeli freshwater snail. Oecologia 44:98–104Google Scholar
  6. Ismail NS, Abdel-Hafez SK (1983) Larval stages of digenetic trematodes ofMelanopsis praemorsa (L. 1758, Buccinum) (Thiaridae) snails from Yarmouk River, Jordan. Z. Parasitenkd 69:613–626Google Scholar
  7. Ismail NS, Saliba EK (in press) Studies on larval stages of digenetic trematodes ofMelanoides tuberculata (Muller) snails from Azraq Oasis, Jordan. Zool ScriptaGoogle Scholar
  8. Ismail NS, Saliba EK, Toma M (in press) Studies on larval stages of digenetic trematodesMelanopsis praemorsa (L., Buccinum) land snail from Azraq Oasis, Jordan. Zool ScriptaGoogle Scholar
  9. Lutfy RG, Ismail NS, Saliba EK (1978) Larval trematodes fromLymnaea auricularia in the Azraq Oasis of Jordan. Bull Zool Soc Egypt 28:47–61Google Scholar
  10. Pike AW (1967) Some stylet cercariae and a microphallid type in British freshwater molluscs. Parasitol 57:729–754Google Scholar
  11. Saliba EK (1977) A brevifurate schistosome cercaria fromLymnaea auricularia snails in the Azraq Oasis, Jordan. Jordan Med J 12:52–59Google Scholar
  12. Saliba EK, Lutfy RG, Ismail NS (1978) Fascioliasis in Azraq Oasis, Jordan. II. Infection ofLymnaea auricularia withFasciola gigantica Cobb., 1855 cercariae. Acta Parasitol Pol 25:51–55Google Scholar
  13. Saliba EK, Othman ME (1980) Further studies on natural infection ofLymnaea auricularia with larval trematodes and its susceptibilitiy to infection withFasciola gigantica Cobb from Azraq, Jordan. Acta Parasitol Pol 25:285–292Google Scholar
  14. Sewell RBS (1922) Cercariae Indicae. Ind J Med Res Suppl 10, 370 ppGoogle Scholar
  15. Tchernov E (1975) The mollusca of the sea of Galilee. Malacologia 15:147–184Google Scholar
  16. Tristram HB (1884). The fauna and flora of Palestine. In: The survey of Western Palestine, Palestine Explor Fund London, p 455Google Scholar
  17. Yamaguti S (1958) Systema Helminthum. I. The Digenetic Trematodes of Vertebrates Interscience Publ New York, p 1575Google Scholar

Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • Sami K. Abdel-Hafez
    • 1
  • Naim S. Ismail
    • 1
  1. 1.Department of Biological SciencesYarmouk UniversityIrbidJordan

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