Abstract
The aim of the present study was to record the occurrence of parasites in Cambeva davisi (= Trichomycterus davisi) (Siluriformes: Trichomycteridae) from the Cascavel Stream, in the Iguaçu River basin, municipality of Cascavel, state of Paraná, Brazil, and present a review of the parasites reported infecting trichomycterids belonging to Cambeva and Trichomycterus species from the Neotropical region. Eighty-one fish specimens were collected using the electrofishing technique, with three standardized passes with a duration of 40 min, with extensions of 50 m for each site. In the laboratory, the fish were necropsied, and parasitological and histological analyses were conducted. Two parasite species were found and identified as nymphs of Sebekia oxycephala (Pentastomida) (Prevalence [P] = 8.54%) and Minilernaea floricapitella (Crustacea: Lernaeidae) (P = 1.23%), both representing new records of distribution and host-parasite relationships for genus Cambeva. The presence of the nymphs of S. oxycephala did not result in harmful histological changes or a significant inflammatory process in infected organs. Twenty-one taxa of parasites have been described parasitizing trichomycterids belonging to Trichomycterus (sensu stricto) and Cambeva from the Neotropical region. Nymphs of S. oxycephala have already been reported in freshwater fish belonging to 10 different orders, and M. floricapitella has been found parasitizing Brazilian fishes belonging to two orders. The nymphs of S. oxycephala did not cause histopathological changes and the new records of distribution and host-parasite relationships reported here enrich knowledge of the parasitic fauna of freshwater fish from the Neotropical region.
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All data are available in the manuscript.
Notes
using the terms Cambeva, Trichomycterus, Pygidium, Sebekia oxycephala, Pentastoma oxychepalum, Bdukus ichthyius, Pentastomum heterodontis, Minilernaea floricapitella, pentastomids, tongue worms, Pentastomida, fish from streams, fish parasite, stream, headwater, Crustacea, crustacean, Copepoda, copepod, Lernaeidae, lerneid, helminth, Nematoda, nematode, Cestoda, cestode, Acanthocephala, acanthocephalan, Trematoda, trematode, Monogenea, monogeneans, monogenetic. All common names were search using the term in English, Portuguese and Spanish languages, considering the terms in singular and plural.
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Acknowledgments
We are grateful to Kássia Regina Ossuci for the collection of parasites and to Professor Jose Iannacone Oliver for provide some manuscripts used in the revision. We would also like to thank São Paulo State University (UNESP), Institute of Biosciences, municipality of Botucatu, state of São Paulo, and to State University of Western Paraná (UNIOESTE), municipality of Cascavel, state of Paraná, for the use of laboratory facilities and logistics.
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A.B.P is supported by the Coordination for the Improvement of Higher Education Personnel (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior) (CAPES) (post-graduate scholarship). R.J.S. and I.P.R. are supported by the National Council for Technological and Scientific Development (CNPq) (process 309125/2017-0 and 303311/2018-5 respectively). R.J.S. is also supported by FAPESP (2016/50377-1).
Contributions of the authors
Alini Beloto Parra, as the main author, contributed to the general structure of the manuscript, and the review of data on the occurrence of Sebekia oxycephala and Minilernaea floricapitella fish from the Neotropical region, including the Trychomycterus species.
Igor Paiva Ramos took part in the structuration, scientific discussions and interpretation contained in this manuscript.
João Paulo de Arruda Amorim contributed to the histopathological analyses, scientific discussions and interpretation contained in this manuscript.
Rosilene Luciana Delariva took part in the scientific discussions and interpretation contained in this manuscript.
Reinaldo José da Silva contributed to parasite identification and revision of manuscript.
Diesse Aparecida Oliveira Sereia participated in the sampling of fish and the revision of the manuscript.
Lidiane Franceschini acted as supervisor of Ms. Parra during the structuration, scientific discussions and interpretation contained in this manuscript.
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Parra, A.B., Ramos, I.P., Delariva, R.L. et al. Parasites of Cambeva davisi (Siluriformes: Trichomycteridae) from the Cascavel stream, Neotropical area. Biologia 76, 599–612 (2021). https://doi.org/10.2478/s11756-020-00564-1
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DOI: https://doi.org/10.2478/s11756-020-00564-1