Abstract
Seven new species of Urocleidoides from the gills and skin of nine Neotropical fish hosts (Anostomidae, Parodontidae, and Gymnotidae) are described: Urocleidoides digitabulum n. sp. on Leporinus friderici, Leporinus octofasciatus, and Megaleporinus elongatus (Anostomidae); Urocleidoides solarivaginatus n. sp. on L. friderici, L. octofasciatus, and Leporinus striatus (Anostomidae); Urocleidoides falxus n. sp. and Urocleidoides sapucaiensis n. sp. on M. elongatus; Urocleidoides tenuis n. sp. on Apareiodon piracicabae and Apareiodon affinis (Parodontidae); Urocleidoides sinus n. sp. on L. striatus, Schizodon nasutus, and Schizodon intermedius (Anostomidae); and Urocleidoides uncinus n. sp. on Gymnotus sylvius (Gymnotidae). Urocleidoides paradoxus was also found in this study on L. friderici and included in the phylogenetic analysis. Molecular data (partial 28S rDNA and mitochondrial cytochrome oxidase subunit I) were obtained for U. digitabulum n. sp., U. tenuis n. sp., U. sinus n. sp., and U. uncinus n. sp. The identification of Urocleidoides is amended herein to include all taxonomic modifications observed in this genus over time and add new characteristics observed in the species in the present study. Phylogenetic analysis revealed Urocleidoides digitabulum n. sp. and Urocleidoides sinus n. sp. (parasites of anostomids) closely related in the tree topologies. Furthermore, the new species described herein parasitized phylogenetically distant host species (Characiformes and Gymnotiformes), suggesting the effect of the dynamic process of ecological fitting.
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Acknowledgments
The authors thank Edmir Daniel Carvalho (in memoriam), Sandro Geraldo de Castro Britto (in memoriam), Diogo Freitas Souza, Marcos Gomes Nogueira, Pedro Sartori Manoel, Fernando Portella Rodrigues de Arruda, Silvio César de Almeida, and Virgínia Sanches Uieda for their logistical support during the collections as well as Maria Regina Lucas da Silva, Diego Henrique Mirandola Dias Vieira, and Claudio Oliveira for their assistance during the molecular and phylogenetic analyses. We are also thankful to the curators of the parasitological collections at the CHIOC and USNM museums for lending us the monogenean paratypes and vouchers and for providing some photomicrographs of the deposited specimens.
Funding
This work was supported by FAPESP – São Paulo Research Foundation (grant numbers A.C.Z.: 2011/23588-8, 2015/11542-4, and 2016/07829-9, L.F.: 2012/07850-7 and 2015/11543-0, F. H. Y.: 2011/22603-3 and 2014/14298–4, M. F. B.: 2013/19776-9, and R.J.S.: 2016/50377-1), CAPES - Coordination for the Improvement of Higher Education Personnel (grant number L.F.: CAPES/PNPD 17/2016), CNPq - National Council for Scientific and Technological Development (grant numbers P.O.F.Y.: 140872/2017-5 and R.J.S.: 309125/2017-0 and PROTAX 440496/2015-2) and FUNEP – Teaching and Extension Research Support Foundation (grant number R.J.S.: 1.01852/2011). We also thank Duke Energy and CELAN (Central Elétrica Anhanguera) for their financial and logistical support for the sampling expeditions to the Sapucaí-Mirim River.
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Zago, A.C., Yamada, F.H., de Oliveira Fadel Yamada, P. et al. Seven new species of Urocleidoides (Monogenea: Dactylogyridae) from Brazilian fishes supported by morphological and molecular data. Parasitol Res 119, 3255–3283 (2020). https://doi.org/10.1007/s00436-020-06831-z
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DOI: https://doi.org/10.1007/s00436-020-06831-z