Consulta: creatorFacets:"D'Agosto,Marta"
Registros recuperados: 13
Data/hora: 02/06/2024 11:12:18

Quantitative study of Trichodina heterodentata (Ciliophora: Mobilia) infrapopulations infesting tadpoles of a Brazilian endemic toad Rhinella pombali (Anura: Bufonidae)
Provedor de dados: 103
Autores: Fernandes,Noemi M.; Sartini,Bianca; Dias,Roberto J. P.; D'Agosto,Marta.
In this work we investigated the quantitative aspects of the relationship between Rhinella pombali (Baldissera, Caramaschi &amp;amp; Haddad, 2004) tadpoles and their trichodinid ectoparasites. Specimens were collected from a small stream located at an agricultural area between rainforest fragments in southeastern Brazil. A total of 80 tadpoles were investigated. Trichodina heterodentata Duncan, 1977 was the only trichodinid ciliate species recovered. All tadpoles were naturally infested by T. heterodentata with a mean intensity of 695.14 ± 33.33 trichodinid ciliates per tadpole. A positive correlation was observed between the intensity of the infestation and tadpole weight. Intensity of infestation did not significantly influence mean trichodinid diameter...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anurans; Conservation; Ectoparasites; Parasitism; Trichodinids.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000600011

Morphometric study of a Brazilian strain of Carchesium polypinum (Ciliophora: Peritrichia) attached to Pomacea figulina (Mollusca: Gastropoda), with notes on a high infestation
Provedor de dados: 103
Autores: 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

Quantitative and differential analysis of ciliate protozoa in rumen content samples filtered before and after fixation
Provedor de dados: 96
Autores: Rossi,Mariana Fonseca; Martinele,Isabel; D'Agosto,Marta.
The objective of this study was to assess whether the straining of rumen content samples influences the estimation of protozoal density. Ninety rumen samples were obtained from 30 cattle (three samples per animal). The samples were subjected to one of three treatments at the moment of collection: 1) fixation informalin without straining(control treatment), 2) straining before fixation informalin, or 3)straining after fixation informalin.To test the hypothesis of the variation in the protozoa composition in the samples, multivariate analyses with non-metric multidimensional scaling (NMDS) were carried out. The diversity and density of rumen protozoa were negatively affected by straining before fixation.In the pre-filtered sample, the number of ciliates from...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Ciliophora; Entodinium; Ruminal protozoa; Ruminant.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001100010

Efeito da monensina e do óleo de soja sobre os protozoários ciliados do rúmen e correlação dos protozoários com parâmetros da fermentação ruminal e digestivos
Provedor de dados: 96
Autores: Martinele,Isabel; Eifert,Eduardo da Costa; Lana,Rogério de Paula; Arcuri,Pedro Braga; D'Agosto,Marta.
Quatro vacas lactantes canuladas no rúmen, com 155 dias em lactação, foram dispostas em um quadrado latino 4 × 4 e alimentadas, duas vezes ao dia, com silagem de milho e concentrado (relação 55:45, base matéria seca), para se avaliarem os efeitos da monensina e do óleo de soja na dieta de vacas lactantes sobre a contagem de protozoários ciliados, além de estabelecer correlações entre os protozoários com alguns parâmetros da digestão e da fermentação ruminal. Os tratamentos consistiram da inclusão de 33 ppm de monensina sódica ou de 4% de óleo de soja na dieta, assim representados: dieta controle, sem óleo ou monensina - CT; dieta com monensina - MN; dieta com óleo - OL; combinação de 33 ppm de monensina e 4% de óleo de soja - OM. Verificou-se a ocorrência...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos; Ciliophora; Lipídios; Ionóforo; Metano.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008000600025

Abundance and diversity of rumen protozoa in lambs fed Gliricidia sepium silage
Provedor de dados: 96
Autores: Martinele,Isabel; Silva,Lucas Feitosa; D'Agosto,Marta; Muniz,Evandro Neves; Sá,José Luiz de; Santos,Gladston Rafael de Arruda.
The objective of this study was to evaluate changes in ruminal protozoa in lambs after partial replacement of feed concentrates in their diets with Gliricidia sepium silage. Twenty-four male Santa Ines lambs with an average initial weight of 14.5 kg were used. The experimental design was completely randomized, with four treatments and six replications. Treatments (given as a percentage of dry matter) were as follows: control - corn silage (600 g kg-1 as fed) + concentrate (400 g kg-1 as fed); GS133 - corn silage (600 g kg-1 as fed) + G. sepium silage (133 g kg-1as fed) + concentrate (267 g kg-1 as fed); GS267 - corn silage (600 g kg-1 as fed) + G. sepium silage (267g kg-1as fed) + concentrate (133 g kg-1 as fed); and GS400 - corn silage (600 g kg-1 as fed)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protein supplementation; Rumen microorganism; Ruminant.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000800436

Predação e canibalismo entre protozoários ciliados (Ciliophora: Entodiniomorphida: Ophryoscolecidae) no rúmen de ovinos (Ovis aries)
Provedor de dados: 104
Autores: Martinele,Isabel; D'Agosto,Marta.
O objetivo deste trabalho foi registrar ocorrências de predação e canibalismo em protozoários ciliados no rúmen de ovinos. Foram analisadas amostras de conteúdo ruminal de cinco ovinos mestiços Santa Inês, fistulados no rúmen, mantidos em pastagem natural de caatinga, no município de Sertânia, Pernambuco. Foram obtidas seis amostras de conteúdo ruminal de cada ovino, totalizando 30 amostras, as quais foram fixadas em formalina 18,5% (v/v). De cada amostra foi retirada uma alíquota de 1 ml de conteúdo ruminal ao qual se adicionaram três gotas de solução de lugol para a coloração e identificação dos protozoários ciliados. Estas alíquotas foram analisadas utilizando-se lâminas e lamínulas, em campos determinados randomicamente. Constatou-se a ocorrência de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Competição; Entodiniomorfos; Predador; Presa.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000300010

Feeding behavior of Frontonia leucas (Ehrenberg) (Protozoa, Ciliophora, Hymenostomatida) under different environmental conditions in a lotic system
Provedor de dados: 104
Autores: Dias,Roberto Júnio P.; D'Agosto,Marta.
The objective of this study was to record and describe the morphological changes and the ingestion mechanisms of Frontonia leucas (Ehrenberg, 1833) according to the food type and to relate the food ingested with the different environmental conditions in a lotic system, namely São Pedro stream, located in the municipality of Juiz de Fora, Minas Gerais, Brazil. We sampled three points on a monthly basis from August 2002 to June 2003, each of which receiving different levels of untreated sewage. We prepared culture media for the ciliate specimens containing filtered water from each point and the types of food observed inside F. leucas (cyanobacteria, diatoms, desmids and testate amoebas). We observed the ingestion mechanisms of F. leucas in vivo, under a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciliate; Polluted stream; Predator; Prey.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000300021

Influência do hospedeiro no perfil populacional e nas populações de ciliados do rúmen de bovinos
Provedor de dados: 104
Autores: D'Agosto,Marta; Rosa,Milden Rodrigues de Santa.
The influence of the host on the population profile and on the ciliate populations of the bovine rumen was investigated using three suckling crossbred friesian-zebu (Gir) cows, with fistulas. The genera of ciliate observed in the three hosts examined have characterized the populations as type A. The occurrence of the genera of ciliate was related to the host. lt was verified that the rumen ciliate were quantitatively influenced by inherent factors in the host animais, showing a significam difference in the total of ciliate among the hosts in ali stages of the experiment.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Entodiniomorphida; Isotrichidae; Blepharocorythidae; Bovine; Rumen ciliate populations.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000200012

Estádios evolutivos de tripanossomas de Hipostomus punctatus Valenciennes (Osteichthyes, Loricariidae) em infecção natural de Batracobdella gemmata Blanchard (Hirudinea, Glossiphoniidae)
Provedor de dados: 104
Autores: D'Agosto,Marta; Serra-Freire,Nicolau Maués da.
Seventeen leeches obtained from armoured catfish (Hypostomus punclatus Valenciennes, 1840) infected with Trypanosoma spp. were examined. It was observed the presence of tripomastigotes, epimastigotes and amastigotes forms as well as dividing forms in the proboscis and in the stomach, different from the ones found in the vertebrate host as regards the morfometric features and developing forms. The examination of the contents of rectum did not show tripanosomes. These facts seem to demonstrate that Batracobdella gemmata (Blanchard, 1900) is an invertebrate host of trypanosomes and the transmission is done by means of inoculation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osteichthyes; Loricariidae; Hirudinea; Glossiphoniidae; Tripanosomes.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000300008

Aspectos morfológicos de ciliados de rúmen (Entodiniomorphida, Ophryoscolecidae) revelados pelas técnicas do Protargol e da reação de Feulgen
Provedor de dados: 104
Autores: D'Agosto,Marta; Santa-Rosa,Milden Rodrigues de.
The resulls of the protargol's technique and Feulgen's reactions on ciliates of the genus Entodinium Stetn. 1859, Diplodinium Schuberg. 1888. Eodinium Kofoid &amp;amp; MacLennan. 1932, Eudiplodinium Dogiel. 1927 and Ostracodinium Dogiel. 1927 are presented. The ciliates were obtained from samples of bovine's ruminal content.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Entodiniomorphida; Ophryoscolecidae; Rumen ciliate; Silver impregnation; Feulgen's reaction.
Ano: 1994
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000200005

Evaluation of lugol solution used for counting rumen ciliates
Provedor de dados: 104
Autores: D'Agosto,Marta; Carneiro,Maria Elisa.
The present study proposes a modification of the technique described by PURSER &amp;amp; MOIR (1959) for the quantitative evaluation of rumen ciliate based on an adaptation described by DEHORITY (I984). The modifying process includes: the replacement of two drops of brilliant green dye, for at least four hours, by three drops of lugol solution, for at least 15 minutes. It was made a comparative evaluation of these stainings. It was concluded that lugol solution can replace the brilliant green dye showing the following advantages: staining time reduction and subsequent speeding of sample processing; evidence of skeletal plates of entodiniomorphs making its identification easier; improved observation of small ciliates and inconspicuous structures; improved...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rumen ciliate; Quantitative evaluation; Lugol solution; Technique.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000300011

Associative behaviour and antagonism of bovine rumen ciliate (Protista, Ciliophora) from Zona da Mata, Minas Gerais State, Brazil
Provedor de dados: 104
Autores: D'Agosto,Marta; Guedes,Paulo Marcos da Matta.
Aiming at obtaining the community profile and verifying the occurrence of antagonism and association among ciliates, samples of rumen content were analysed in 100 bovines soon after their death. The animals were killed at the Juiz de Fora Municipal slaughter house (Juiz de Fora, Minas Gerais State, Brazil) between August 1996 and May 1997. Ciliates occurred, respectively, in the following percents and samples number: Entodinium Stein, 1859 (50,48; 100), Diplodinium Schuberg, 1888 (5,59; 98), Eudiplodinium Dogiel, 1927 (6,91; 97), Ostracodinium Dogiel, 1927 (9,68; 95), hotricha Stein, 1859 (4,15; 93), Dasytricha Schuberg, 1888 (3,31; 93), Metadi nium Awerinzew &amp;amp; Mutafowa, 1914 (3,06; 90), Eremoplastron Kofoid &amp;amp; MacLennan. 1932 (7,39; 87),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rumen ciliate; Behaviour; Bovine; Community profile; Antagonism.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400011

First record of epibionts peritrichids and suctorians (Protozoa, Ciliophora) on Pomacea lineata (Spix, 1827)
Provedor de dados: 52
Autores: Dias,Roberto Júnio Pedroso; D'Ávila,Sthefane; D'Agosto,Marta.
This study made a survey on the ciliate protozoans from Peritrichid and Suctorian taxa, epibionts of Pomacea lineata (Spix, 1827) (Ampullariidae). Fifty mollusks were collected in places of irrigation ditches and shell was scraped with a scalpel and the extracted material was analyzed in vivo by light microscopy. All examined mollusks presented epibiont ciliates on their shells. For the first time epibiont ciliates in P. lineata was record. Seven genera of ciliates: five peritrichids and two suctorians, were identified and classified within the subclass Peritrichia: Carchesium Ehrenberg, 1838 (Vorticellidae), Epistylis Ehrenberg, 1830 (Epistylidae), Opercularia Stein, 1854 (Operculariidae), Vaginicola Lamarck, 1816 (Vaginicolidae) and Vorticella Linnaeus,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epizoic ciliates; Prosobranch snail; Freshwater environment.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000600015