Priscilla de Oliveira Fadel Yamada1, Fabio Hideki Yamada2, Reinaldo José da Silva3. 1. Instituto de Biociências, Setor de Parasitologia, UNESP, Univ Estadual Paulista, Campus de Botucatu, Botucatu, SP, Brazil. pf_yamada@hotmail.com. 2. Departamento de Ciências Biológicas, Universidade Regional do Cariri (URCA), Crato, CE, Brazil. 3. Instituto de Biociências, Setor de Parasitologia, UNESP, Univ Estadual Paulista, Campus de Botucatu, Botucatu, SP, Brazil.
Abstract
PURPOSE: To describe three new species of Cosmetocleithrum in the gills of Trachelyopterus galeatus (Siluriformes, Auchenipteridae) from Aguapeí River, Upper Paraná River basin, São Paulo State, Brazil. METHODS: Fifty-three specimens of T. galeatus were captured in the mouth of the Aguapeí River from August 2013 to June 2014. Monogeneans were mounted unstained in Hoyer's and Gray and Wess's medium. RESULTS: Cosmetocleithrum spathulatum sp. n., Cosmetocleithrum baculum sp. n., and Cosmetocleithrum galeatum sp. n. differ from all known congeneric species mainly in the morphology of the accessory piece (i.e. spatulate-shaped, claviform, and a straight rod with hook-shaped distal portion, respectively). Also, the three new species share hooks with different sizes with hooks pairs 5 and 7 bigger than others and with an erect delicate point, inconspicuous thumb, longer shaft, and slender shank. CONCLUSIONS: To date, 18 species of Cosmetocleithrum were recognised parasitizing siluriforms in the Neotropical region. The present study expands the number to 21 species, however, despite this increase, the number of known taxa of monogeneans in neotropics is far from representing the ideal situation.
PURPOSE: To describe three new species of Cosmetocleithrum in the gills of Trachelyopterus galeatus (Siluriformes, Auchenipteridae) from Aguapeí River, Upper Paraná River basin, São Paulo State, Brazil. METHODS: Fifty-three specimens of T. galeatus were captured in the mouth of the Aguapeí River from August 2013 to June 2014. Monogeneans were mounted unstained in Hoyer's and Gray and Wess's medium. RESULTS: Cosmetocleithrum spathulatum sp. n., Cosmetocleithrum baculum sp. n., and Cosmetocleithrum galeatum sp. n. differ from all known congeneric species mainly in the morphology of the accessory piece (i.e. spatulate-shaped, claviform, and a straight rod with hook-shaped distal portion, respectively). Also, the three new species share hooks with different sizes with hooks pairs 5 and 7 bigger than others and with an erect delicate point, inconspicuous thumb, longer shaft, and slender shank. CONCLUSIONS: To date, 18 species of Cosmetocleithrum were recognised parasitizing siluriforms in the Neotropical region. The present study expands the number to 21 species, however, despite this increase, the number of known taxa of monogeneans in neotropics is far from representing the ideal situation.
Entities:
Keywords:
Aguapeí River; Ancyrocephalinae; Catfishes; Neotropical region; Paraná River basin
Authors: R M Takemoto; G C Pavanelli; M A P Lizama; A C F Lacerda; F H Yamada; L H A Moreira; T L Ceschini; S Bellay Journal: Braz J Biol Date: 2009-06 Impact factor: 1.651
Authors: Aline Angelina Acosta; Tomáš Scholz; Isabel Blasco-Costa; Philippe Vieira Alves; Reinaldo José da Silva Journal: Parasitol Int Date: 2017-09-20 Impact factor: 2.230