RESUMENEn junio de 2012, a raíz de un fenómeno marino que produjo mortandad de aves de varias especies marinas, se estudiaron los endoparásitos en dos pelícanos (Pelecanus thagus) y dos pingüinos (Spheniscus humboldti) hallados muertos en la playa del distrito de Chorrillos, Lima-Perú. Se realizó la obtención de helmintos del tracto digestivo en ambas especies aplicando el método de Travassos. Fueron identificados en Pelecanus thagus los nematodos Contracaecum rudolphii y Syngamus trachea, el cestodo Tetrabothrius sp, el trematodo Galactosomum puffini y el acantocéfalo Corynosoma sp. En Spheniscus humboldti, el trematodo Cardiocephaloides physalis y los nematodos Contracaecum pelagicum y Cyathostoma phenisci. Syngamus trachea, Galactosomum puffini, Corynosoma sp y Contracaecum pelagicum son considerados nuevos reportes en Pelecanus thagus en el Perú. Además, Spheniscus humboldti puede ser considerado nuevo hospedero de Cardiocephaloides physalis y Cyathostoma phenisci. district of Chorrillos, Lima (Peru). The helminths were obtained from the digestive tract in both species using the Travassos protocols. The nematodes Contracaecum rudolphii and Syngamus trachea, the cestode Tetrabothrius sp, the trematode Galactosomum puffini and the acanthocephalan Corynosoma sp were identified in Pelecanus thagus. In Spheniscus humboldti, the trematode Cardiocephaloides physalis and the nematodes Contracaecum pelagicum and Cyathostoma phenisci were identified. Syngamus trachea, Galactosomum puffini, Corynosoma sp and Contracaecum pelagicum are considered new reports in Pelecanus thagus in Peru. In addition, Spheniscus humboldti can be considered new host of Cardiocephaloides physalis and Cyathostoma phenisci.
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