New morphological data and molecular diagnostic of Henneguya friderici (Myxozoa: Myxobolidae), a parasite of Leporinus friderici (Osteichthyes: Anostomidae) from southeastern Brazil

Vidal, Letícia Poblete; Luque, José L.

doi:10.1590/s1984-29612017010

Cited by 4 publications

(2 citation statements)

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“…Parasites of the genus Henneguya are considered one of the most abundant parasites affecting larval fish stages, either in the wild or under farmed conditions (Naldoni et al, 2011;Vidal & Luque, 2017), with more than 200 described species (Dyková & Lom, 1992;Lom & Dyková, 2006). In Brazil, 40 species of Henneguya sp.…”

Section: ___________________ Corresponding Editor: Jesús Ponce-palafoxmentioning

confidence: 99%

“…In Brazil, 40 species of Henneguya sp. (Cnidaria: Myxosporea: Myxobolidae) were described infecting a large variety of commercial fishes (Eiras et al, 2008;Naldoni et al, 2011;Vidal & Luque, 2017). Infection due to Henneguya species occurs mainly in the gill arches, which leads to destruction of the gill filaments, causing respiratory failure (Dyková & Lom, 1992;Velasco et al, 2015), but it can also be observed to be parasitizing kidney of freshwater fish Piaractus mesopotamicus, causing several histological alterations (Manrique et al, 2017).…”

Section: ___________________ Corresponding Editor: Jesús Ponce-palafoxmentioning

confidence: 99%

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Histopathology and molecular identification of Henneguya pseudoplatystoma

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Mauad

Honorato

et al. 2020

Lat. Am. J. Aquat. Res.

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The present study proposes to characterize the parasites isolated during the initial phase of production in fish farms located in Mato Grosso do Sul in the central-western region of Brazil, using histopathology analysis and molecular techniques. A total of 340 hybrid surubim fish (Pseudoplatystoma reticulatum × P. corruscans) from four farms were examined during the co-feeding phase. Histopathology analysis showed that 10.9% (n = 37) of the fish were infected with parasites. Branchitis, lifting epithelium, hypertrophy of epithelial cells, lamellar fusion, aneurisms and infection in the bone tissue of the gill filament was observed. The parasite species was determined by amplification of the 18S rRNA gene followed by sequencing. The phylogenetic analysis of nucleotide sequences indicates a close relationship (99.6%) with Henneguya pseudoplatystoma reported to be infecting the hybrid Pseudoplatystoma. This study demonstrates the occurrence of H. pseudoplatystoma in hybrid surubim (P. reticulatum × P. corruscans) during the co-feeding phase in fish farms in Mato Grosso do Sul. Also, molecular techniques provide a faster and sensitive method to identify fish parasites, and may assist in the development of new management techniques aimed at improving the sanitary conditions contributing to the reduction of mortality rates in these animals.

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Section: ___________________ Corresponding Editor: Jesús Ponce-palafoxmentioning

confidence: 99%