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Registros recuperados: 44 | |
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GENNARI,Solange Maria; KASAI,Nobuko; PENA,Hilda Fátima de Jesus; CORTEZ,Adriana. |
Foram examinadas, pelo Laboratório de Doenças Parasitárias do Departamento de Medicina Veterinária Preventiva e Saúde Animal, da Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, no período de janeiro de 1991 a janeiro de 1995, amostras de 353 cães e de 187 gatos, com idades variadas e de diferentes áreas da cidade de São Paulo. Os métodos de diagnóstico empregados foram: centrífugo-flutuação em solução de sacarose e centrífugo-sedimentação em água-éter. Aproximadamente 45,0% das amostras de cães examinadas (160 amostras) apresentaram-se positivas e o percentual de ocorrência de parasitos, em relação ao total de amostras foi: Ancylostoma spp. 20,40; Toxocara canis 8,49; Giardia sp. 7,65; Cryptosporidium parvum 2,83; Cystoisospora... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cães; Gatos; Helmintos; Protozoa. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961999000200006 |
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Nahrevanian,Hossein. |
Nitric oxide (NO) is a potent mediator with diverse roles in regulating cellular functions and signaling pathways. The NO synthase (NOS) enzyme family consists of three major isoforms, which convey variety of messages between cells, including signals for vasorelaxation, neurotransmission and cytotoxicity. This family of enzymes are generally classified as neuronal NOS (nNOS), endothelial NOS (eNOS) and inducible NOS (iNOS). Increased levels of NO are induced from iNOS during infection; while eNOS and nNOS may be produced at the baseline in normal conditions. An association of some key cytokines appears to be essential for NOS gene regulation in the immunity of infections. Accumulating evidence indicates that parasitic diseases are commonly associated with... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: INOS; Nitric oxide; NO; Immunity; Helminth; Parasite; Protozoa. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702009000600010 |
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Portela Díaz, Diego Felipe. |
Actualmente se necesitan alternativas que disminuyan la emisión de metano asociada a la producción ganadera, una opción, es el uso de plantas que contienen metabolitos secundarios y causan la desfaunación ruminal. El presente estudio tuvo como objetivo principal, evaluar la capacidad desfaunante in vitro de diferentes plantas y subproductos agrícolas, así como su efecto en algunas variables de fermentación ruminal, población de microorganismos, producción de dióxido de carbono y metano. En la primera fase, se evaluaron 10 plantas y 6 subproductos agrícolas. El follaje del chicalote blanco (Argemone ochroleuca) y el subproducto, cascabillo de café (Coffea arabica) fueron seleccionados, ya que presentaron la mayor capacidad desfaunante. A la 96 h de... |
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Palavras-chave: Metano; Desfaunación; Protozoarios; Coffea arabica; Argemone ochroleuca; Methane; Defaunation; Protozoa; Ganadería; Maestría. |
Ano: 2012 |
URL: http://hdl.handle.net/10521/1711 |
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Zapata Madrid,Jaime. |
Las tecamebas son un grupo de protozoos que viven principalmente en las comunidades acuáticas y de ambientes húmedos (suelos, turberas, etc.), en donde juegan un importante rol como descomponedoras de celulosa y lignina; además participan activamente en diversos procesos biológicos que ocurren en los ecosistemas acuáticos. Con respecto al conocimiento de las tecamebas en Chile, éste se mantiene en un estado muy incipiente, de ahí la necesidad de contar con más especialistas, ya que este grupo está adquiriendo cada vez más importancia por su uso en problemas de paleolimnología, como bioindicadores de ambientes lacustres contaminados, como indicadores pedológicos, entre otros. |
Tipo: Journal article |
Palavras-chave: Protozoa; Tecamebas; Taxonomía; Chile. |
Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382006000100006 |
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Мордухай-Болтовский, Ф. Д. (ред.). |
Определитель обеспечивает возможность точного установления научного названия и систематического положения всех встречаемых в море организмов. Для каждой группы приводятся анатомо-морфологический обзор, определительные таблицы отрядов, семейств и родов с их краткими характеристиками и таблицы для определения видов. Рисунки приводятся для всех видов. Определитель выпущен в трех томах. В первый том включены простейшие, губки, кишечнополостные, черви, щупальцевые. Второй том охватывает всех свободноживущих представителей класса ракообразных, включая виды, населяющие опресненные солоноватоводные районы (с соленостью не менее 2-3%). Третий том посвящен группам свободноживущих беспозвоночных, не вошедшим в первые два тома, а именно: членистоногим (кроме... |
Tipo: Book |
Palavras-chave: Protozoa; Porifera; Coelenterata; Nemertini; Nemathelminthes; Annelida; Tentaculata; Oligochaeta; Hirudinea. |
Ano: 1968 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/1078 |
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Le Gall, Solange; Bel Hassen, Malika; Le Gall, Pierre. |
The linked concepts of 'microbial loop' and 'protozoan trophic link' have been very well documented in filter-feeding microzooplankton such as copepods, but have not been applied to energy transfer to benthic suspension-feeding macrofauna, with the exception of the recent demonstration of heterotrophic flagellate assimilation by mussels. The oyster Crassostrea gigas obtains energy resources by filtering microalgae (similar to 5 to 100 mu m). However, in turbid estuaries, light-limited phytoplanktonic production cannot entirely account for oyster energy requirements. Conversely, picoplankters (<2 mu m), which are main effecters of coastal energy flow and matter cycling, are not efficiently retained by oyster filtration. Ciliate protozoal as both... |
Tipo: Text |
Palavras-chave: Oyster; Food sources; Picoplankton; Protozoa; Trophic link. |
Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00337/44788/44482.pdf |
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Assmy, Philipp; Cisewski, Boris; Henjes, Joachim; Klaas, Christine; Montresor, Marina; Smetacek, Victor. |
Ocean iron fertilization experiments enable the quantitative study of processes shaping the structure and functioning of pelagic ecosystems following perturbation under in situ conditions. EIFEX was conducted within a stationary eddy adjacent to the Antarctic Polar Front over 38 days in February/March 2004 and induced a massive diatom bloom. Here, we present the responses in abundance and biomass of all identifiable protozooplankton taxa (heterotrophic protists ranging from 2 to 500 mm) during the bloom. Acantharia, dinoflagellates and ciliates together contributed >90% of protozooplankton biomass in the upper 100 m throughout the experiment with heterotrophic nanoflagellates, nassellaria, spumellaria, phaeodaria, foraminifera and the taxopodidean... |
Tipo: Text |
Palavras-chave: Protozoa; Rhizaria; Sarcodines; Southern Ocean; Top-down control. |
Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00290/40091/39174.pdf |
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Mostajir, B; Bustillos-guzman, J; Claustre, H; Rassoulzadegan, F. |
The egestion of particulate material as well as pigment degradation during microzooplankton grazing on phytoplankton are poorly known processes. In an attempt to evaluate these processes, changes in pigment concentrations within various size fractions were monitored in batch cultures of an assemblage of a pelagic ciliate (Strombidium sulcatum) and a heterotrophic flagellate (Paraphysomonas sp.) feeding on a cyanobacterium (Synechococcus sp.) over a 10-day period. Chlorophyll a, carotenoids and phaeopigments were not found in the 0.1-0.7 mu m fraction while the pigments originally in the 0.7-3.0 mu m fraction (prey) were transferred into the > 3.0 mu m size fraction (predator). During this transfer, the carotenoids (zeaxanthin and B-carotene) were not... |
Tipo: Text |
Palavras-chave: Pigment; Phéopigment; Broutage; Protozoaire; HPLC; Pigment; Phaeopigment; Grazing; Protozoa; HPLC. |
Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00325/43660/43209.pdf |
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Milozzi,Carola; Bruno,Gabriela; Cundom,Elisa; Mudry,Marta D; Navone,Graciela T. |
Endoparasitic infections are common in nonhuman primates and important factors in regulating their natural populations. Primates are particularly vulnerable to the infections of directly transmitted parasites because they often live in close social groups that facilitate their transmission. The main objective of this study was to provide baseline data on gastrointestinal parasites of semi captive and wild howler monkeys Alouatta caraya troops from Argentina. We collected 110 fecal samples from 38 howler monkeys from four troops, two of them kept in semi-captivity at the CRMAN, Córdoba, and two wild troops from Las Lomas, Corrientes. We identified six species of parasites: four Protozoa, Giardia lamblia, Blastocystis hominis, Eimeria sp. and Entamoeba coli;... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alouatta caraya; Argentina; Helminths; Protozoa. |
Ano: 2012 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832012000200006 |
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Aemiro, Ashagrie; Watanabe, Shota; Suzuki, Kengo; Hanada, Masaaki; Umetsu, Kazutaka. |
An in vitro study was conducted to investigate the effect of different concentrations of Euglena (Euglena gracilis) on CH4 production, dry matter (DM) digestibility, volatile fatty acid (VFA) and ammonia N(NH3-N) concentration as well as on the protozoa population. The treatments considered were Euglena at concentrations of 0.0, 50, 100, 200, 400 and 1000 g/kg dry matter (DM) of the substrate (60:40 forage: concentrate ratio) incubated for 24 and 96 h using an in vitro continuous gas production and in vitro two-stage digestion procedure, respectively. The data were subjected to polynomial regression analysis. Methane emissions (ml/g DM) decreased at an increasing rate, generally with increasing concentration of Euglena but also exhibited quadratic (P<... |
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Palavras-chave: Methane emission; Euglena; Protozoa; Volatile fatty acid; Digestibility; Ammonia. |
Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4458 |
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Lee, Yun Sik; Chung, In Bai; Choi, Won Hyung; Cho, Yoo Jung; Chu, Jong Phil; Min, Byung-Il; Shin, Eun-Hee. |
Meliae cortex (Melia azedarach Linne. var. japonica Makino, M. toosendan Siebold & Zucc) is one of the herbs used in oriental medicine for the treatment of various types of vaginitis. The present study was performed to examine the effects of Meliae cortex extracts on the growth and fine structure of Trichomonas vaginalis (T. vaginalis). Meliae cortex dose-dependently reduced the viability of T. vaginalis. In the electron microscopy study, we also observed the ultrastructural changes of T. vaginalis following the treatment with Meliae cortex. One to two hours after the addition of the extract of Meliae cortex, the movement of flagella and axostyle decreased, but the cell death did not occur. The fine structure of the cytoplasm was changed 30 min to 2... |
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Palavras-chave: Trichomonas vaginalis; Meliae cortex; Meliae azedarach; Inhibition of cell multiplication; Protozoa; Ultra structure. |
Ano: 2007 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1051 |
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Registros recuperados: 44 | |
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