6533b837fe1ef96bd12a3486

RESEARCH PRODUCT

Euparyphium albuferensis and Echinostoma friedi (Trematoda: Echinostomatidae): Experimental cercarial transmission success in sympatric snail communities

José Guillermo EstebanA. MarinCarla Muñoz-antoliRafael ToledoAmparo Vidal

subject

EchinostomatidaeSympatrybiologyEcologySnailsRadix peregraZoologyTrematode InfectionsSnailbiology.organism_classificationPhysella acutaSympatric speciationbiology.animalAnimalsParasite hostingParasitologyTrematodaGyraulus chinensis

description

Euparyphium albuferensis and Echinostoma friedi cercarial infectivity to four species of sympatric snails was exam- ined under single- or multiple-choice laboratory conditions to show the level of parasite-snail host compatibility. Radix peregra, Lymnaea fuscus, Physella acuta and Gyraulus chinensis act as second intermediate hosts of both parasite species although differ- ent cercarial transmission success (CTS) was observed. In single-host experiments, R. peregra and P. acuta showed a high de- gree of compatibility with E. albuferensis, while only P. acuta in the case of E. friedi. In two-choice snail communities, a snail with high CTS increased the values of another with low compatibility, in both parasite species. In multiple-choice snail commu- nities, high CTS of some hosts decreased, while low CTS of other hosts increased. The degree of parasite-host compatibility of each snail species could be determined by the presence of other snails in the community.

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