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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Description of Two Novel Henneguya (Cnidaria: Myxosporea) Infecting Curimatid Fish, Using Morphological, Histological, and Molecular Analyses

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Mirandola Dias Vieira, Diego Henrique [1] ; Narciso, Rodrigo Bravin [1] ; de Azevedo, Rodney Kozlowiski [2] ; da Silva, Reinaldo Jose [1]
Total Authors: 4
[1] Univ Estadual Paulista, Inst Biosci, Div Parasitol, Lab Parasitol Wild Anim, UNESP, R Prof Dr Antonio Celso Wagner Zanin 250, BR-18618689 Botucatu, SP - Brazil
[2] Ctr Univ CESMAC, Programa Posgrad Anal Sistemas Ambientais, Maceio, Alagoas - Brazil
Total Affiliations: 2
Document type: Journal article
Web of Science Citations: 0

Purpose We describe two new Henneguya spp. (Myxobolidae) found parasitizing Cyphocharax modestus from Pardo river, Parana river basin, municipality of Botucatu, Sao Paulo State, Brazil: Henneguya fastigata n. sp. from gill lamellae and Henneguya pardensis n. sp. from gill arches. We based the descriptions on myxospore morphology, histology, and small subunit ribosomal DNA sequences. Methods In this investigation, 50 specimens of Cyphocharax modestus were examined between July and December 2020 for myxozoan infections. Morphological characterization was based on the mature myxospores. The small subunit ribosomal DNA sequences were used for molecular and phylogenetic study. Results Phylogenetic analysis provided the evolutionary position of these new species with other myxobolids species. Myxospores of the two species had similar morphology and morphometrics, but differed in spore body width and length, and ssrDNA sequences differed by 7.2%. These data supported the diagnosis of the parasites as distinct and novel species. The phylogenetic analysis showed a well-supported subclade formed by species that parasitize curimatid fishes, with Henneguya gilbert as a sister species of Henneguya fastigata n. sp., and Henneguya pardensis n. sp. as a sister species of both species. Conclusion Our analysis was consistent with previous studies suggesting that orders and families of the hosts are strongly correlated with phylogenetic signals in the Myxobolidae. These are the first species of myxozoans described in the Pardo river. (AU)

FAPESP's process: 19/26831-2 - Diversity and systematics of ergasilids parasites of fishes from Pardo River, Middle Paranapanema, São Paulo State
Grantee:Rodrigo Bravin Narciso
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 20/05412-9 - Diversity, taxonomy and systematic of fish parasites from Pardo River, Middle Paranapanema River, São Paulo State
Grantee:Reinaldo José da Silva
Support type: BIOTA-FAPESP Program - Regular Research Grants
FAPESP's process: 19/19060-0 - Systematic and distribution of myxozoans collected in fish from Pardo River, middle Paranapanema River, State of São Paulo
Grantee:Diego Henrique Mirandola Dias Vieira
Support type: Scholarships in Brazil - Post-Doctorate