Contracaecum rudolphii Hartwich (Nematoda, Anisakidae) from the Neotropical Cormorant, Phalacrocorax brasilianus (Gmelin) (Aves, Phalacrocoracidae) in southern Brazil

Neotropic Cormorant (Phalacrocorax brasilianus) Science Article 3


The present report is part of a larger study on the helminth fauna of Neotropical Cormorants,Phalacrocorax brasilianus (Gmelin, 1789) in Brazil, particularly, in the southernmost State of Rio Grande do Sul. Thenematodes which were found loose in the proventriculus/ventriculus or in groups of adults of different ages andof L3 and L4 larval stages, forming eosinophylic granulomas had a prevalence of 100% in 47 Neotropicalcormorants from Lago Guaiba, Municipality of Guaiba. The morphology of the labia/interlabia, the distributionpattern of the caudal papillae in males examined under scanning electron microscopy (SEM), and the tipsof the spicules allowed determination of the species as Contracaecum rudolphii Hartwich, 1964 sensu lato (s. l.). Thisis the first record of C. rudolphii in southern Brazil.

Jose F. R. Amato, Cassandra M. Monteiro & Suzana B. Amato, Revista Brasileira de Zoologia 23 (4): 1284-1289

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