Phylogeny, ultrastructure, histopathology and prevalence of Myxobolus oliveirai sp. nov., a parasite of Brycon hilarii (Characidae) in the Pantanal wetland, Brazil

Phylogeny, ultrastructure, histopathology and prevalence of Myxobolus oliveirai sp. nov., a parasite of Brycon hilarii (Characidae) in the Pantanal wetland, Brazil

Author Milanin, Tiago Google Scholar
Eiras, Jorge C Google Scholar
Arana, Sarah Google Scholar
Maia, Antônio Augusto Mendes Google Scholar
Alves, Anderson Luís Google Scholar
Silva, Marcia Ramos Monteiro da Google Scholar
Carriero, Mateus Maldonado Google Scholar
Ceccarelli, Paulo Sergio Google Scholar
Adriano, Edson Aparecido Autor UNIFESP Google Scholar
Institution Universidade do Porto Faculdade de Ciências Departamento de Biologia e Centro Interdisciplinar de Investigação Marinha e Ambiental
Universidade Estadual de Campinas (UNICAMP)
Universidade de São Paulo (USP)
Universidade Estadual Paulista (UNESP)
Instituto Chico Mendes de Conservação da Biodiversidade Centro Nacional de Pesquisa e Conservação de Peixes Continentais
Universidade Federal de São Paulo (UNIFESP)
Abstract This paper presents the morphological, histological and ultrastructural characteristics of Myxobolus oliveirai sp. nov., a parasite of the gill filaments in Brycon hilarii from the Brazilian Pantanal. Out of 216 B. hilariispecimens examined (126 wild and 90 cultivated), 38.1% of wild specimens (n = 48) were infected. The parasites form elongated plasmodia primarily in the tip of gill filaments, reaching about 3 mm in length. A thorough comparison with all the Myxobolus species described from South American hosts, as well as nearly all the Myxobolus species described so far is provided. Partial sequencing of the 18S rDNA gene revealed a total of 1,527 bp. The Myxobolus species parasite of B. hilarii did not match any of the Myxozoa available in GenBank. In the phylogenetic analysis, M. oliveirai sp. nov. composed a monophyletic group with eight other species: five species of Myxobolus parasites of mugilid fishes, two parasites of pangasiid and one of centrarchid. Infection prevalence values of the parasite revealed no significant differences between wet and dry seasons or between males and females. The importance of the infection to the farming of the host species is emphasized.
Keywords Myxozoa
Myxosporea
histology
molecular analysis
fish
piraputanga
Language English
Date 2010-09-01
Published in Memórias do Instituto Oswaldo Cruz. Instituto Oswaldo Cruz, Ministério da Saúde, v. 105, n. 6, p. 762-769, 2010.
ISSN 0074-0276 (Sherpa/Romeo)
Publisher Instituto Oswaldo Cruz, Ministério da Saúde
Extent 762-769
Origin http://dx.doi.org/10.1590/S0074-02762010000600006
Access rights Open access Open Access
Type Article
SciELO ID S0074-02762010000600006 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/5919

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