Endohelminths from the brown pelican, Pelecanus occidentalis, and the American white pelican, Pelecanus erythrorhynchus, from Galveston Bay, Texas, USA, and checklist of pelican parasites
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Ten species of endohelminths including 2 cestodes, 3 nematodes, and 5 trematodes were collected from 6 American white pelicans, Pelecanus erythrorhynchus, and 22 species of endohelminths including 2 acanthocephalans, 3 cestodes, 4 nematodes, and 13 trematodes were collected from 10 brown pelicans. Pelecanus occidentalis, from the Galveston, Texas, area. A mean of 120 and a range of 4 to 2,134 helminths were present in the American white pelican, and a mean of 57 and a range of 2 to 10,413 helminths were found in the brown pelican. Two cestodes, 3 nematodes, and 3 trematodes were common to both species of pelicans. Parvitaenia ibisae, Tetrabothrius sp., Capillaria sp. represent new host records for the American white pelican, and Echinochasmus cf. donaldsoni. Phagicola macrostoma, and Lyperosomum sp. represent new host records for the brown pelican. Hypotheses for the recent infection of pelicans with species of Bursacetabulus and Bursatintinnabulus along the Gulf coast are discussed.
