Ciliates
Mostrando 1-12 de 149 artigos, teses e dissertações.
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1. Structure and dynamics of the protoplankton community in an environmentally protected urban stream
Resumo O objetivo foi investigar, em escalas espacial e temporal, a abundância das comunidades de protozoários bem como os fatores intervenientes na estruturação das mesmas em um córrego urbano. Métodos: Amostras de água para análise de comunidades biológicas (amebas testáceas, ciliados e bactérias) e para análise de variáveis limnológicas fora
Braz. J. Biol.. Publicado em: 02/12/2019
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2. First report of Epibiont ciliates (Ciliophora: Peritrichia) living on larvae of Leptophlebiidae (Ephemeroptera) from Brazil
ABSTRACT Epibiosis was understood as a commensalism relation between two or more organisms. However, some studies have shown that epibionts can cause deleterious effects to their host. Here, we reported the first report of epibiosis between protozoa Epibiont ciliates (Ciliophora: Peritrichia) living on larvae of Ephemeroptera from Brazil.
Braz. arch. biol. technol.. Publicado em: 02/05/2017
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3. Record of Epibiont ciliates (Ciliophora: Peritrichia) living on larvae of Odonata from Brazil
Braz. J. Biol.. Publicado em: 29/08/2016
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4. Abundance and diversity of rumen protozoa in lambs fed Gliricidia sepium silage
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. Treat
R. Bras. Zootec.. Publicado em: 2014-08
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5. Protozoans bacterivory in a subtropical environment during a dry/cold and a rainy/warm season
In aquatic ecosystems, bacteria are controlled by several organisms in the food chain, such as protozoa, that use them as food source. This study aimed to quantify the ingestion and clearance rates of bacteria by ciliates and heterotrophic nanoflagellates (HNF) in a subtropical freshwater reservoir (Monjolinho reservoir -São Carlos -Brazil) during one year
Braz. J. Microbiol.. Publicado em: 2014
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6. Quantitative and differential analysis of ciliate protozoa in rumen content samples filtered before and after fixation
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
R. Bras. Zootec.. Publicado em: 2013-11
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7. Morphology and 18S rDNA gene sequence of Spirostomum minus and Spirostomum teres (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil
Species of Spirostomum Ehrenberg, 1838 are widely used as model organisms in ecological studies of environmental impacts and symbioses between ciliates and human pathogenic bacteria. However, the taxonomy of this genus is confused by the superficiality of the morphological descriptions of its included species, and the use of only a few characters for their d
Zoologia (Curitiba). Publicado em: 2013-02
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8. Phylogenetic study of Class Armophorea (Alveolata, Ciliophora) based on 18S-rDNA data
The 18S rDNA phylogeny of Class Armophorea, a group of anaerobic ciliates, is proposed based on an analysis of 44 sequences (out of 195) retrieved from the NCBI/GenBank database. Emphasis was placed on the use of two nucleotide alignment criteria that involved variation in the gap-opening and gap-extension parameters and the use of rRNA secondary structure t
Genet. Mol. Biol.. Publicado em: 2013
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9. Change in the meiofauna community structure of sandy beaches of the Nuevo Gulf (Chubut, Argentina)
The composition and distribution of the benthic meiofauna assemblages of the Nuevo Gulf (Chubut, Argentina) are described in relation to abiotic variables. The meiofauna and sediment samples were collected in the intertidal zone of four sandy beaches with different anthropic disturbances in June 2005. The samples were obtained at 20 sampling sites using a 2.
Pap. Avulsos Zool. (São Paulo). Publicado em: 2012
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10. Fitoplâncton e protozooplâncton em viveiros de cultivo de camarão / Phytoplankton and protozooplankton in culture shrimp ponds
Na aqüicultura, o sistema sem trocas de água é eficiente e sustentável, permite manejar o balanço entre carbono e nitrogênio, e o desenvolvimento de microorganismos que contribuem na boa qualidade da água, alimentação e sobrevivência do organismo alvo do cultivo. No presente estudo, a composição e densidade de fitoplâncton e protozooplâncton em
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/07/2011
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11. Quantitative study of Trichodina heterodentata (Ciliophora: Mobilia) infrapopulations infesting tadpoles of a Brazilian endemic toad Rhinella pombali (Anura: Bufonidae)
In this work we investigated the quantitative aspects of the relationship between Rhinella pombali (Baldissera, Caramaschi & 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. Tri
Zoologia (Curitiba). Publicado em: 2011-12
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12. ASPECTOS MORFOLÓGICOS E ECOLÓGICOS DO PROTISTA CILIADO RHABDOSTYLA CHIRONOMI KAHL, 1933 (CILIOPHORA, PERITRICHIA) EPIBIONTE DE LARVAS DE QUIRONOMÍDEOS EM UM CÓRREGO URBANO DO SUDESTE DO BRASIL
In the present study, both taxonomy and morphology aspects of the epibiont ciliate Rhabdostyla chironomi found in São Pedro stream (Juiz de Fora-MG), as well some ecological aspects of this epibiotic relationship between the peritrich and chironomid larvae from genus Chironomus gr. decorus. The present dissertation is divided into four parts. In the first o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2009