CERCARIAL CHAETOTAXY DIFFERENCES AMONG HYPODERAEUM CONOIDEUM (BLOCH, 1782) (TREMATODA: ECHINOSTOMATIDAE) FROM VARIOUS EUROPEAN LOCALITIES
Rafael Toledo, Carla Muñoz-Antolí
Abstract
Rafael Toledo, Carla Muñoz-Antolí
Abstract
The cercarial chaetotaxy of Hypoderaeum conoideum (Bloch, 1782) (Trematoda: Echinostomatidae) is fully established for specimens emitted by naturally infected Lymnaea peregra (MUller, 1774) (Gastropoda: Lymnaeidae) from the Albufera Natural Park (Valencia, Spain). The main data available on the cercarial sensilla of other descriptions of Hypoderaeum spp. are analyzed. A similar pattern was noted in the different descriptions of H. conoideum, though several differences in the caudal chaetotaxy and dorso-Iateral papillae according to the geographical origin of the cercaria may be detected. Evidence of the existence of two different strains of this species in Europe is presented. Affinities between H. conoi- deum and other species of Echinostomatidae are discussed. Echinoparyphium spp. and Euparyphium spp. are found to be the most closely related.
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The cercarial chaetotaxy of Hypoderaeum conoideum (Bloch, 1782) (Trematoda: Echinostomatidae) is fully established for specimens emitted by naturally infected Lymnaea peregra (MUller, 1774) (Gastropoda: Lymnaeidae) from the Albufera Natural Park (Valencia, Spain). The main data available on the cercarial sensilla of other descriptions of Hypoderaeum spp. are analyzed. A similar pattern was noted in the different descriptions of H. conoideum, though several differences in the caudal chaetotaxy and dorso-Iateral papillae according to the geographical origin of the cercaria may be detected. Evidence of the existence of two different strains of this species in Europe is presented. Affinities between H. conoi- deum and other species of Echinostomatidae are discussed. Echinoparyphium spp. and Euparyphium spp. are found to be the most closely related.
Key concepts: Chaetotaxy, Biology, Trematoda, Zoology, Gastropoda, Anatomy, Genus, Helminths