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Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
29/03/2011 |
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Data da última atualização: |
18/02/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
AZEVEDO, C.; CASAL, G.; MARQUES, D. K. S.; SILVA, E.; MATOS, E. |
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Afiliação: |
CARLOS AZEVEDO, UNIVERSITY OF PORTO; GRAÇA CASAL, UNIVERSITY OF PORTO; DEBORA KARLA SILVESTRE MARQUES, CPAP; EDINAEL SILVA; EDILSON MATOS, FEDERAL RURAL UNIVERSITY OF AMAZONIA. |
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Título: |
Ultrastructure of Myxobolus brycon n. sp. (Phylum Myxozoa), parasite of the Piraputanga Fish Brycon hilarii (Teleostei) from Pantanal (Brazil). |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Journal of Eukaryotic Microbiology, v. 58, n. 2, p. 88-93, 2011. |
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Idioma: |
Português |
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Conteúdo: |
Light and electron microscopy studies of a myxosporean, parasitizing the gill filaments of the freshwater fish Brycon hilarii (Valenciennes, 1850) (Characidae) collected in the Paraguay River (181490S, 571390W) (Pantanal), Brazil, is described. This parasite produces spherical to ellipsoidal polysporic histozoic plasmodia (Pmd) (up to ~ 180 mm in diameter) delimited by a double membrane and with several pinocytic channels. The plasmodial cyst contained the youngest developmental stages at the cortical periphery and immature and mature spores more internally. The Pmd developed near the cartilaginous structure of the gill filament, forming a prominent deformation where the gill lamellae disappear. Pyriform spores measured 6.9 +- 0.6 (range 6.5?7.2) mm long, 4.2 +- 0.5 (range 3.9?4.8) mm wide, and 2.5 +- 0.7 (range 1.9?2.8) mm thick. The spores composed of two equal shell valves (~ 70 nm thick), adhering together along the straight suture line, surrounded two equal symmetric and elongated to pyriform polar capsules (PC) 4.2 +- 0.6 (range 3.8?4.7) x 1.9 +- 0.6 (1.7?2.5) mm; each PC contained a coiled polar filament with eight or nine (rarely 10) turns and a binucleated sporoplasm cell. Dense irregular masses were observed among the polar filaments coils. An intercapsular appendix was not observed. The sporoplasm contained several globular sporoplasmosomes randomly distributed among an extensive rough endoplasmic reticulum system with numerous vesicles and cisternae. Based on the morphological and ultrastructural differences and specificity of the host, we establish the new species, Myxobolus brycon n. sp. MenosLight and electron microscopy studies of a myxosporean, parasitizing the gill filaments of the freshwater fish Brycon hilarii (Valenciennes, 1850) (Characidae) collected in the Paraguay River (181490S, 571390W) (Pantanal), Brazil, is described. This parasite produces spherical to ellipsoidal polysporic histozoic plasmodia (Pmd) (up to ~ 180 mm in diameter) delimited by a double membrane and with several pinocytic channels. The plasmodial cyst contained the youngest developmental stages at the cortical periphery and immature and mature spores more internally. The Pmd developed near the cartilaginous structure of the gill filament, forming a prominent deformation where the gill lamellae disappear. Pyriform spores measured 6.9 +- 0.6 (range 6.5?7.2) mm long, 4.2 +- 0.5 (range 3.9?4.8) mm wide, and 2.5 +- 0.7 (range 1.9?2.8) mm thick. The spores composed of two equal shell valves (~ 70 nm thick), adhering together along the straight suture line, surrounded two equal symmetric and elongated to pyriform polar capsules (PC) 4.2 +- 0.6 (range 3.8?4.7) x 1.9 +- 0.6 (1.7?2.5) mm; each PC contained a coiled polar filament with eight or nine (rarely 10) turns and a binucleated sporoplasm cell. Dense irregular masses were observed among the polar filaments coils. An intercapsular appendix was not observed. The sporoplasm contained several globular sporoplasmosomes randomly distributed among an extensive rough endoplasmic reticulum system with numerous vesicles and cisternae. Based on th... Mostrar Tudo |
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Thesaurus NAL: |
fish. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02191naa a2200181 a 4500
001 1883476
005 2013-02-18
008 2011 bl --- 0-- u #d
100 1 $aAZEVEDO, C.
245 $aUltrastructure of Myxobolus brycon n. sp. (Phylum Myxozoa), parasite of the Piraputanga Fish Brycon hilarii (Teleostei) from Pantanal (Brazil).
260 $c2011
520 $aLight and electron microscopy studies of a myxosporean, parasitizing the gill filaments of the freshwater fish Brycon hilarii (Valenciennes, 1850) (Characidae) collected in the Paraguay River (181490S, 571390W) (Pantanal), Brazil, is described. This parasite produces spherical to ellipsoidal polysporic histozoic plasmodia (Pmd) (up to ~ 180 mm in diameter) delimited by a double membrane and with several pinocytic channels. The plasmodial cyst contained the youngest developmental stages at the cortical periphery and immature and mature spores more internally. The Pmd developed near the cartilaginous structure of the gill filament, forming a prominent deformation where the gill lamellae disappear. Pyriform spores measured 6.9 +- 0.6 (range 6.5?7.2) mm long, 4.2 +- 0.5 (range 3.9?4.8) mm wide, and 2.5 +- 0.7 (range 1.9?2.8) mm thick. The spores composed of two equal shell valves (~ 70 nm thick), adhering together along the straight suture line, surrounded two equal symmetric and elongated to pyriform polar capsules (PC) 4.2 +- 0.6 (range 3.8?4.7) x 1.9 +- 0.6 (1.7?2.5) mm; each PC contained a coiled polar filament with eight or nine (rarely 10) turns and a binucleated sporoplasm cell. Dense irregular masses were observed among the polar filaments coils. An intercapsular appendix was not observed. The sporoplasm contained several globular sporoplasmosomes randomly distributed among an extensive rough endoplasmic reticulum system with numerous vesicles and cisternae. Based on the morphological and ultrastructural differences and specificity of the host, we establish the new species, Myxobolus brycon n. sp.
650 $afish
700 1 $aCASAL, G.
700 1 $aMARQUES, D. K. S.
700 1 $aSILVA, E.
700 1 $aMATOS, E.
773 $tJournal of Eukaryotic Microbiology$gv. 58, n. 2, p. 88-93, 2011.
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