Please use this identifier to cite or link to this item: http://repositorio.ufpa.br:8080/jspui/handle/2011/5969
metadata.dc.type: Artigo de Periódico
Issue Date: Apr-2013
metadata.dc.creator: AZEVEDO, Carlos José Correia de
ROCHA, Sonia Maria Rodrigues da
CASAL, Graça Maria Figueiredo
SÃO CLEMENTE, Sérgio Carmona de
MATOS, Patrícia Santos
AL-QURAISHY, Saleh
MATOS, Edilson Rodrigues
Title: Ultrastructural description of Ceratomyxa microlepis sp. nov. (Phylum Myxozoa): a parasite infecting the gall bladder of Hemiodus microlepis, a freshwater teleost from the Amazon River
Citation: AZEVEDO, Carlos et al. Ultrastructural description of Ceratomyxa microlepis sp. nov. (Phylum Myxozoa): a parasite infecting the gall bladder of Hemiodus microlepis, a freshwater teleost from the Amazon River. Memórias do Instituto Oswaldo Cruz, Rio de Janeiro, v. 108, n. 2, p. 150-154, abr. 2013. Disponível em: <http://www.scielo.br/pdf/mioc/v108n2/0074-0276-mioc-108-02-0150.pdf>. Acesso em: 09 jul. 2014. <http://dx.doi.org/10.1590/0074-0276108022013004>.
Abstract: A new ceratomyxid parasite was examined for taxonomic identification, upon being found infecting the gall bladder of Hemiodus microlepis (Teleostei: Hemiodontidae), a freshwater teleost collected from the Amazon River, Brazil. Light and transmission electron microscopy revealed elongated crescent-shaped spores constituted by two asymmetrical shell valves united along a straight sutural line, each possessing a lateral projection. The spores body measured 5.2 ± 0.4 µm (n = 25) in length and 35.5 ± 0.9 µm (n = 25) in total thickness. The lateral projections were asymmetric, one measuring 18.1 ± 0.5 µm (n = 25) in thickness and the other measuring 17.5 ± 0.5 µm (n = 25) in thickness. Two equal-sized subspherical polar capsules measuring 2.2 ± 0.3 µm in diameter were located at the same level, each possessing a polar filament with 5-6 coils. The sporoplasm was binucleate. Considering the morphometric data analyzed from the microscopic observations, as well as the host species and its geographical location, this paper describes a new myxosporean species, herein named Ceratomyxa microlepis sp. nov.; therefore representing the first description of a freshwater ceratomyxid from the South American region.
Keywords: Peixe
Parasitos
Ictioparasitologia
Hemiodus microlepis
Teleósteos
Ceratomyxa microlepis
Infecção parasitária
Ultraestrutura
Vesícula biliar
Rio Trombetas
Pará - Estado
Amazônia brasileira
ISSN: 0074-0276
metadata.dc.rights: Acesso Aberto
Appears in Collections:Artigos Científicos - ICB

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