Experimental research on the biological cycle of Phyllodistomum elongatum Nybelin, 1926 (Digenea: Gorgoderidae Looss, 1901)] |
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Authors: | P Orecchia L Paggi L Castagnolo G Della Seta R Minervini |
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Abstract: | Experimental infection of Tinca tinca and Carassius auratus have demonstrated that Cercaria duplicata von Baer, 1827 is the larval form of Phyllodistomum elongatum Nybelin, 1926 and that the life-cycle occurs between Anodonta cygnea (intermediate host) and Tinca tinca or Carassius auratus (final host) without a second intermediate host. The life-history experimentally completed in the laboratory occurs in the following way: -- adult in the ureters of Tinca tinca and Carassius auratus; -- mother sporocyst and daughter sporocyst of Phyllodistorum elongatum in Anodonta cygnea give rise to the large-tailed rhopalocercous cercaria; -- metacercaria encysted within transformed tail in water. |
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