Kudoa amazonica n. sp. (Myxozoa; Multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, Hypophthalmus marginatus (Siluriformes: Pimelodidae), from a river of the Amazon region

Velasco, Michele; Sindeaux Neto, Jos? Ledamir; Videira, Marcela; Nascimento, Luciana de C?ssia Silva do; Gon?alves, Evonnildo Costa; Matos, Edilson

Artigo

Kudoa amazonica n. sp. (Myxozoa; Multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, Hypophthalmus marginatus (Siluriformes: Pimelodidae), from a river of the Amazon region

The class Myxozoa is a group of spore-producing eukaryote organisms that parasitize both freshwater and marine fish. The multivalvulide myxosporidian parasites of the genus Kudoa infect primarily the musculature of the fish host, some species are producing enzymes (proteases) capable of digesting mu...

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Autor principal:	Velasco, Michele
Outros Autores:	Sindeaux Neto, Jos? Ledamir, Videira, Marcela, Nascimento, Luciana de C?ssia Silva do, Gon?alves, Evonnildo Costa, Matos, Edilson
Grau:	Artigo
Idioma:	eng
Publicado em:	Elsevier 2019
Assuntos:	Peixes-Gato / anatomia & histologia Peixes-Gato / parasitologia Myxozoa / parasitologia Doen?as do Es?fago / parasitologia Fibras Musculares Esquel?ticas Rio Tocantins (PA)
Acesso em linha:	http://patua.iec.gov.br//handle/iec/3627

id	ir-iec-3627
recordtype	dspace
spelling	ir-iec-36272019-04-03T14:33:38Z Kudoa amazonica n. sp. (Myxozoa; Multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, Hypophthalmus marginatus (Siluriformes: Pimelodidae), from a river of the Amazon region Velasco, Michele Sindeaux Neto, Jos? Ledamir Videira, Marcela Nascimento, Luciana de C?ssia Silva do Gon?alves, Evonnildo Costa Matos, Edilson Peixes-Gato / anatomia & histologia Peixes-Gato / parasitologia Myxozoa / parasitologia Doen?as do Es?fago / parasitologia Fibras Musculares Esquel?ticas Rio Tocantins (PA) The class Myxozoa is a group of spore-producing eukaryote organisms that parasitize both freshwater and marine fish. The multivalvulide myxosporidian parasites of the genus Kudoa infect primarily the musculature of the fish host, some species are producing enzymes (proteases) capable of digesting muscle fibers. In the present study, 50 specimens of the freshwater catfish Hypophthalmus marginatus were collected from the Tocantins River in Par?, Brazil, and were analyzed. Overall, 68% of these specimens presented infections by Kudoa parasite in the esophageal musculature. The morphology of these parasite was examined under light microscopy and nucleotide sequences of the SSU rDNA gene were obtained for phylogenetic analyses. The species formed numerous whitish pseudocysts containing square spores with rounded extremities in the apical view, and four polar capsules of equal size. In the phylogenetic analyses, Kudoa amazonica n. sp. was characterized as a sister taxon of another freshwater species, Kudoa orbicularis. The combination of morphological, morphometric, and molecular data obtained in the present study provided a conclusive diagnosis of Kudoa amazonica n. sp., which is clearly distinct from all other Kudoa taxa described to date. 2019-04-03T14:02:42Z 2019-04-03T14:02:42Z 2019 Artigo VELASCO, Michele et al. Kudoa amazonica n. sp. (Myxozoa; Multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, Hypophthalmus marginatus (Siluriformes: Pimelodidae), from a river of the Amazon region. Microbial Pathogenesis, v. 130, p. 247-252, May 2019. 1096-1208 http://patua.iec.gov.br//handle/iec/3627 10.1016/j.micpath.2019.03.017 eng Acesso Embargado application/pdf Elsevier
institution	Instituto Evandro Chagas (IEC)
collection	PATUA
language	eng
topic	Peixes-Gato / anatomia & histologia Peixes-Gato / parasitologia Myxozoa / parasitologia Doen?as do Es?fago / parasitologia Fibras Musculares Esquel?ticas Rio Tocantins (PA)
spellingShingle	Peixes-Gato / anatomia & histologia Peixes-Gato / parasitologia Myxozoa / parasitologia Doen?as do Es?fago / parasitologia Fibras Musculares Esquel?ticas Rio Tocantins (PA) Velasco, Michele Kudoa amazonica n. sp. (Myxozoa; Multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, Hypophthalmus marginatus (Siluriformes: Pimelodidae), from a river of the Amazon region
topic_facet	Peixes-Gato / anatomia & histologia Peixes-Gato / parasitologia Myxozoa / parasitologia Doen?as do Es?fago / parasitologia Fibras Musculares Esquel?ticas Rio Tocantins (PA)
description	The class Myxozoa is a group of spore-producing eukaryote organisms that parasitize both freshwater and marine fish. The multivalvulide myxosporidian parasites of the genus Kudoa infect primarily the musculature of the fish host, some species are producing enzymes (proteases) capable of digesting muscle fibers. In the present study, 50 specimens of the freshwater catfish Hypophthalmus marginatus were collected from the Tocantins River in Par?, Brazil, and were analyzed. Overall, 68% of these specimens presented infections by Kudoa parasite in the esophageal musculature. The morphology of these parasite was examined under light microscopy and nucleotide sequences of the SSU rDNA gene were obtained for phylogenetic analyses. The species formed numerous whitish pseudocysts containing square spores with rounded extremities in the apical view, and four polar capsules of equal size. In the phylogenetic analyses, Kudoa amazonica n. sp. was characterized as a sister taxon of another freshwater species, Kudoa orbicularis. The combination of morphological, morphometric, and molecular data obtained in the present study provided a conclusive diagnosis of Kudoa amazonica n. sp., which is clearly distinct from all other Kudoa taxa described to date.
format	Artigo
author	Velasco, Michele
author2	Sindeaux Neto, Jos? Ledamir Videira, Marcela Nascimento, Luciana de C?ssia Silva do Gon?alves, Evonnildo Costa Matos, Edilson
author2Str	Sindeaux Neto, Jos? Ledamir Videira, Marcela Nascimento, Luciana de C?ssia Silva do Gon?alves, Evonnildo Costa Matos, Edilson
title	Kudoa amazonica n. sp. (Myxozoa; Multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, Hypophthalmus marginatus (Siluriformes: Pimelodidae), from a river of the Amazon region
title_short	Kudoa amazonica n. sp. (Myxozoa; Multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, Hypophthalmus marginatus (Siluriformes: Pimelodidae), from a river of the Amazon region
title_full	Kudoa amazonica n. sp. (Myxozoa; Multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, Hypophthalmus marginatus (Siluriformes: Pimelodidae), from a river of the Amazon region
title_fullStr	Kudoa amazonica n. sp. (Myxozoa; Multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, Hypophthalmus marginatus (Siluriformes: Pimelodidae), from a river of the Amazon region
title_full_unstemmed	Kudoa amazonica n. sp. (Myxozoa; Multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, Hypophthalmus marginatus (Siluriformes: Pimelodidae), from a river of the Amazon region
title_sort	kudoa amazonica n. sp. (myxozoa; multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, hypophthalmus marginatus (siluriformes: pimelodidae), from a river of the amazon region
publisher	Elsevier
publishDate	2019
url	http://patua.iec.gov.br//handle/iec/3627
_version_	1717584349597007872
score	11.755432

Kudoa amazonica n. sp. (Myxozoa; Multivalvulida), a parasite of the esophageal musculature of the freshwater catfish, Hypophthalmus marginatus (Siluriformes: Pimelodidae), from a river of the Amazon region

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