Rhinergasilus unguilongus n. sp. (Copepoda: Ergasilidae): A Gill Parasite of the Freshwater Fish Prochilodus lineatus (Valenciennes, 1837) (Actinopterygii: Prochilodontidae) from the Neotropical Region, Brazil

Narciso, Rodrigo Bravin; Perbiche‐Neves, Gilmar; Silva, Reinaldo José da

doi:10.1007/s11686-020-00270-7

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“…Most of these copepods are found infesting the gills of freshwater actinopterygians, but some species may be attached to nostrils, tegument and urinary bladder and, less frequently, parasitizes brackish and marine fish, as well as mollusks (Boxshall & Halsey, 2004 ; Rosim et al, 2013 ; Taborda et al, 2016 ). Ergasilidae is the richest family of parasitic copepods found on fish from Brazil, on which 74 species from 18 genera have been reported (Narciso et al, 2019 ; Narciso & Da Silva, 2020 ; Narciso et al, 2020 ; Narciso et al 2021a , 2021b ; Oliveira et al, 2021 ). However, some authors affirm that such diversity is still underestimated, since only a small fraction of the Brazilian ichthyofauna has been studied for parasitic copepods (Luque et al, 2013 ; Taborda et al, 2016 ; Narciso & Da Silva, 2020 ; Paschoal et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Two new species of Acusicola Cressey, 1970 (Copepoda:Cyclopoida: Ergasilidae) parasitic on the gills of two estuarine actinopterygians off Brazil

et al. 2022

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Two new species of copepods assigned to the genus Acusicola Cressey, 1970 (Cyclopoida: Ergasilidae) are proposed based on post-metamorphic adult females, parasitizing the gills of two actinopterygian fish off Brazil namely, the Tripletail Lobotes surinamensis (Bloch) (Lobotidae), collected in the coastal zone of the State of Pará, near Curuçá Municipallity, and the Swordspine snook Centropomus ensiferus Poey (Centropomidae) collected in Sepetiba Bay, State of Rio de Janeiro, Brazil. Acusicola iamarinoi n. sp. parasite of L. surinamensis , differs from its closet congeners based on the first segment of the antennule armed with 10 setae, the presence of a maxillule armed with four elements and a pair of blunt processes dorsally on the fourth pedigerous somite. Acusicola pasternakae n. sp. , collected from C. ensiferus , can be distinguished from its closest congeners based on the membranous sheath of the first endopodal segment of antenna with horizontal marks, the first segment of the antennule armed with 11 setae and a spine on the last exopodal segment of leg 2. This is the first report of representatives of Acusicola parasitizing fish of the families Lobotidae and Centropomidae as well as new geographical records of the genus in the coast of State of Pará and in Sepetiba Bay, Brazil. Supplementary Information The online version contains supplementary material available at 10.1007/s11230-022-10076-y.

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