Please use this identifier to cite or link to this item: http://repositorio.ufpa.br:8080/jspui/handle/2011/5970
metadata.dc.type: Artigo de Periódico
Issue Date: Aug-2011
metadata.dc.creator: AZEVEDO, Carlos José Correia de
CASAL, Graça Maria Figueiredo
SÃO CLEMENTE, Sérgio Carmona de
LOPES, Leila Maria Silva
MATOS, Patrícia Santos
ABDEL-BAKI, Abdel Azeem
OLIVEIRA, Elsa
MATOS, Edilson Rodrigues
Title: Myxidium volitans sp. nov., a parasite of the gallbladder of the fish, Dactylopterus volitans (Teleostei: Triglidae) from the Brazilian Atlantic coast: morphology and pathology
Citation: AZEVEDO, Carlos et al. Myxidium volitans sp. nov., a parasite of the gallbladder of the fish, Dactylopterus volitans (Teleostei: Triglidae) from the Brazilian Atlantic coast: morphology and pathology. Memórias do Instituto Oswaldo Cruz, Rio de Janeiro, v. 106, n. 5, p. 557-561, ago. 2011. Disponível em: <http://www.scielo.br/pdf/mioc/v106n5/07.pdf>. Acesso em: 10 jul. 2014. <http://dx.doi.org/10.1590/S0074-02762011000500007>.
Abstract: Myxidium volitans sp. nov. (Myxozoa: Myxidiidae) parasitizing the hypertrophied green-brownish gallbladder of the teleost Dactylopterus volitans, collected in the Atlantic coast near Niterói, Brazil was described based on ultrastructural studies. The spores were fusiform, sometimes slightly crescent-shaped on average 21.7 ± 0.3 µm (mean ± standard deviation) (n = 50) long and 5.6 ± 0.4 µm (n = 30) wide. The spore wall was thin and smooth, comprising two equally-sized valves joined by a hardly visible sutural ridge. Spores containing two pyriform polar capsules (PC) (5.0 ± 0.4 × 2.3 ± 0.3 µm) (n = 30) are situated in each extremity of the spore. The PC wall was composed of hyaline layer (0.20-0.29 µm thick) and by a thin external granular layer. Each PC contains a polar filament (PF) with irregular arrangements that was projected from its apical region to the bases of PC and coiled laterally from bases to the tip of PC. Some regular striations and S-like structures in the periphery of the PFs with four-five irregular sections were observed. Based on the spore morphology, ultrastructural differences and the specificity of the host we describe this parasite as a new myxosporidian, named M. volitans sp. nov.
Keywords: Peixe
Parasitos
Ictioparasitologia
Myxidium volitans
Myxidiidae
Teleósteos
Infecção parasitária
Ultraestrutura
Vesícula biliar
Esporos
ISSN: 0074-0276
metadata.dc.rights: Acesso Aberto
Appears in Collections:Artigos Científicos - ICB

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