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Title: | A new species of Philometra Costa, 1845 (Nematoda: Philometridae) from the freshwater fish (red piranha) Pygocentrus nattereri Kner (Characidae) in Amazonia, Brazil |
Authors: | Cárdenas, Melissa Querido Morav?ec, Franti?ek Ek Fernandes, Berenice Maria Musco Morais, Aprigio Mota |
Keywords: | Fresh Water Animals Characiformes Classification Dracunculoidea Female Parasitology Microscopy, Electron, Scanning Ultrastructure Animal Characiformes Dracunculoidea Female Fresh Water Microscopy, Electron, Scanning Characidae Characiformes Nematoda Philometra (nematode) Philometridae Pisces Pygocentrus Natterei Pygocentrus Nattereri |
Issue Date: | 2012 |
metadata.dc.publisher.journal: | Systematic Parasitology |
metadata.dc.relation.ispartof: | Volume 83, Número 2, Pags. 137-144 |
Abstract: | A new nematode species, Philometra nattereri n. sp. (Philometridae), is described from female specimens found in the oculo-orbits and nasal cavity of the red piranha Pygocentrus nattereri Kner (Characiformes: Characidae) from five lakes in Central Amazonia, Brazil, collected in 2008 and 2009 (overall prevalence 12%, intensity 1-3 nematodes per fish). Based on light and scanning electron microscopical examination, the new species differs from most other congeners parasitising freshwater fishes in that its oesophageal gland extends anteriorly far anterior to the level of the nerve-ring, in the presence of 14 small cephalic papillae arranged in two circles and in having two minute caudal projections. This is the first species of Philometra Costa, 1845 reported from fishes of the family Characidae and the second valid species of this genus parasitic in freshwater fishes of Brazil and South America. © 2012 Springer Science+Business Media B.V. |
metadata.dc.identifier.doi: | 10.1007/s11230-012-9377-4 |
Appears in Collections: | Artigos |
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