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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.)

Morphological and molecular analysis of Henneguya tietensis n. sp. (Cnidaria: Myxosporea), parasitizing the gill filaments of Prochilodus lineatus (Valenciennes, 1837) from Brazil

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Vieira, Diego Henrique Mirandola Dias [1] ; Rangel, Luis Filipe [2, 3] ; Tagliavini, Vinicius Panciera [1] ; Abdallah, Vanessa Doro [4] ; Santos, Maria Joao [2, 3] ; de Azevedo, Rodney Kozlowiski [4]
Total Authors: 6
[1] Univ Estadual Paulista Julio de Mesquita Filho Un, R Prof Dr Antonio Celso Wagner Zanin 250, BR-18618689 Botucatu, SP - Brazil
[2] Univ Porto, Fac Ciencias, Porto - Portugal
[3] Univ Porto, CIIMAR, Porto - Portugal
[4] Ctr Univ CESMAC, Docente Programa Posgrad Anal Sistemas Ambientais, Maceio, Alagoas - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Parasitology Research; v. 120, n. 1, p. 27-36, JAN 2021.
Web of Science Citations: 0

The present study describes Henneguya tietensis n. sp. parasitizing Prochilodus lineatus (Valenciennes, 1837) from Brazil, through morphological and molecular analysis. Myxospores were found in the gill tissue of P. lineatus with a prevalence of 10%. The myxospores consisted of two elongate, elliptical shell valves each with a long, tapering caudal appendage. The morphology was consistent with Henneguya and the myxospore measured as follows (mean +/- SD): total length 55.5 +/- 2.1 mu m, body length 16.2 +/- 1.1 mu m, body width 5.5 +/- 0.1 mu m, caudal appendages length 39.0 +/- 2.0 mu m. The polar capsules were 7.3 +/- 0.2 mu m long, 1.7 +/- 0.2 mu m wide and contained a polar filament coiled 11 to 13 turns. Histological analysis showed the plasmodia developing in the middle region of each gill filament and caused a focally extensive distension by forming a space-occupying mass within the gill filament. The ultrastructural analysis allowed the observation of the presence of mature myxospores throughout the plasmodium. Phylogenetic analysis with the SSU rDNA gene showed Henneguya tietensis n. sp. as a sister species of the subclade formed by Henneguya piaractus and Henneguya brachypomus that infect fishes of the genus Piaractus. The genetically closest species was H. piaractus, which showed a similarity of 82.4%. Using molecular and morphological characterization, the myxozoan parasite described herein represents a new species of the genus Henneguya. (AU)

FAPESP's process: 14/12862-0 - Analysis of the Mixozoaries biodiversity (Myxozoa: Myxosporea) parasites of the dominant fish species from Batalha River, middle Tietê River, SP, Brazil through morphological, histological, ultrastructural and molecular characterization
Grantee:Rodney Kozlowiski de Azevedo
Support type: Regular Research Grants
FAPESP's process: 19/07708-5 - Use of molecular techniques for the characterization of new species of myxozoans parasites of fishes from Tietê River, Brazil
Grantee:Diego Henrique Mirandola Dias Vieira
Support type: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 15/24901-2 - Phylogeny and taxonomy of myxozoans parasites of fish from inland rivers in the State of São Paulo
Grantee:Diego Henrique Mirandola Dias Vieira
Support type: Scholarships in Brazil - Doctorate