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| Siqueira-Castro,Isabel C. V.; Paiva,Thiago da S.; Silva-Neto,Inácio D. da. |
| In samples of raw sewage collected from a sewage treatment plant in Rio de Janeiro (ETE-Penha), we found populations of two species, Deviata estevesi Paiva & Silva-Neto, 2005 and Deviata brasiliensis sp. nov. The organisms were studied in vivo under phase contrast microscopy, differential interference contrast (DIC), and after protargol-impregnation. The population of D. estevesi exhibited more extensive variation in cirral pattern than previously described. The interphasic organisms of new species D. brasiliensis sp. nov. are distinguishable from their congeners based on a series of morphometric features: cirral row R3 usually presents 1-3 cirri behind the right frontal cirrus, on average there are four macronuclear nodules, and, during... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciliate; Kahliellidae; Ontogenesis; Orthoamphisiellidae; Protista. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000400024 |
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| Dias,Roberto Júnio P.; Cabral,Adalgisa F.; Siqueira-Castro,Isabel C. V.; Silva-Neto,Inácio D. da; D'Agosto,Marta. |
| During an ecological study of the epibiotic relationship between ciliate protists and Pomacea figulina (Spix, 1827) (Gastropoda, Ampullariidae), originating from an urban stream in southeast Brazil, a high infestation by the peritrich ciliate Carchesium polypinum (Linnaeus, 1758) Ehrenberg, 1830 (Ciliophora, Peritrichia) associated to the shell of one mollusc among 23 was observed. We provided a morphological and morphometric study of C. polypinum using observations of specimens in vivo, after protargol staining, and examined using scanning electron microscopy. The Brazilian-population of C. polypinum is characterized by: size of zooid in vivo 89 µm x 57 µm on average; colony regularly dichotomously branched with usually up to 40 zooids; macronucleus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ampullariidae; Epibiosis; Gastropod; Morphology; Peritrichs. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000300024 |
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