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| Registros recuperados: 47 | |
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| Acurio,Andrea Elizabeth; Rafael,Violeta Lily. |
| En el Parque Nacional Yasuní, reconocido como un sector de alto endemismo y biodiversidad, ubicado al noroeste de la Amazonía Ecuatoriana se realizó el inventario taxonómico de la familia Drosophilidae. Para la captura de los individuos se utilizaron trampas con atrayente de banano y solución de levadura de cerveza. La identificación taxonómica se realizó usando caracteres morfológicos y la terminalia de los machos. En total se colectaron 7425 individuos clasificados en 34 especies de los géneros: Drosophila Fallén, 1823, Scaptodrosophila Duda, 1923, Neotanygastrella Duda, 1923 y Zaprionus Coquillett, 1901. Seis de estas especies son nuevos registros para el Ecuador: D. araicas Pavan & Nacrur, 1950, D. equinoxialis Dobzhansky, 1946, D. kikkawai... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inventario taxonómico; Drosophila; Neotanygastrella; Nuevos registros; Zaprionus. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672009000300028 |
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| FONG,CRISTIAN; DÍAZ,FERNANDO; OSORIO,JULIO; CASTANO,LINA; GONZÁLEZ,FANNY; JURADO,LAURA; CASTILLO,KATHERINE; CÁRDENAS,HEIBER. |
| Para estimar el efecto de la densidad poblacional de huevos sobre la viabilidad huevoadulto de Drosophila melanogaster se realizaron tres tratamientos en frascos con medio de cultivo agar-banano: a densidad de 10, 50 y 90 huevos. La variable de respuesta fue la proporción de individuos adultos emergidos desde la aparición del primer imago hasta 15 días después de la siembra. Las viabilidades huevo-adulto promedio fueron 0,320, 0,338 y 0,328 para las densidades de 10, 50 y 90 huevos respectivamente. No se evidenciaron diferencias significativas entre los tres tratamientos (p>0.05). Por lo tanto, no se detectó en este estudio influencia de la densidad poblacional de huevos sobre la viabilidad huevo-adulto. Probablemente debido a que la proporción entre el... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Densidad poblacional; Drosophila; Huevos; Viabilidad. |
| Ano: 2008 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2008000200008 |
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| Blauth,Monica L.; Bruno,Rafaela V.; Abdelhay,Eliana; Loreto,Elgion L.S.; Valente,Vera L.S.. |
| The P element is one of the most thoroughly studied transposable elements (TE). Its mobilization causes the hybrid dysgenesis that was first described in Drosophila melanogaster. While studies of the P element have mainly been done in D. melanogaster, it is believed that Drosophila willistoni was the original host species of this TE and that P was transposed to the D. melanogaster genome by horizontal transfer. Our study sought to compare the transcriptional behavior of the P element in embryos of D. melanogaster, which is a recent host, with embryos of two strains of D. willistoni, a species that has contained the P element for a longer time. In both species, potential transcripts of transposase, the enzyme responsible for the TE mobilization, were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophila; D. willistoni hybrid dysgenesis RNAi P element transposable element. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000400007 |
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| Glavic,Alvaro; López-Varea,Ana; de Celis,José F. |
| The Notch signaling pathway plays an important role in development and physiology. In Drosophila, Notch is activated by its Delta or Serrate ligands, depending in part on the sugar modifications present in its extracellular domain. O-fucosyltransferase-1 (OFUT1) performs the first glycosylation step in this process, O-fucosylating various EGF repeats at the Notch extracellular domain. Besides its O-fucosyltransferase activity, OFUT1 also behaves as a chaperone during Notch synthesis and is able to down regulate Notch by enhancing its endocytosis and degradation. We have reevaluated the roles that O-fucosylation and the synthesis of GDP-fucose play in the regulation of Notch protein stability. Using mutants and the UAS/Gal4 system, we modified in developing... |
| Tipo: Journal article |
Palavras-chave: Notch; GMD; O-fucosyltranserase; Drosophila. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000100004 |
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| THOMAS,GEORGE. |
| The discussion will focus on the role of the ribosomal protein S6 kinase (S6K) signaling pathway in the regulation of cell growth and proliferation. Although 40S ribosomal protein S6 phosphorylation was first described 25 years ago (<A HREF="#20">Gressner and Wool, 1974</A>), it only recently has been implicated in the translational up-regulation of mRNAs coding for the components of protein synthetic apparatus (<A HREF="#15">Fumagalli and Thomas, 2000</A>). These mRNAs contain an oligopyrimidine tract at their 5' transcriptional start site, termed a 5'TOP, which has been shown to be essential for their regulation at the translational level (<A HREF="#32">Meyuhas et al., 1996</A>). In parallel, a great deal of... |
| Tipo: Journal article |
Palavras-chave: Drosophila; SScells; Diabetes. |
| Ano: 2002 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000200022 |
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| Muñoz,Yorka; Fuenzalida,Karen; Bronfman,Miguel; Gatica,Arnaldo; Sepúlveda,Marcelo; Bacigalupo,Juan; Roth,Alejandro D; Delgado,Ricardo. |
| Phototransduction, the mechanism underlying the electrical response to light in photoreceptor cells, has been thoroughly investigated in Drosophila melanogaster, an essential model in signal transduction research. These cells present a highly specialized photosensitive membrane consisting of thousands of microvilli forming a prominent structure termed a rhabdomere. These microvilli encompass the phototransduction proteins, most of which are transmembrane and exclusively rhabdomeric. Rhabdomere membrane lipids play a crucial role in the activation of the transient receptor potential ionic channels (TRP and TRPL) responsible for initiating the photoresponse. Despite its importance, rhabdomere lipid composition has not been established. We developed a novel... |
| Tipo: Journal article |
Palavras-chave: Rhabdomere; Drosophila; Microvilli; Phototransduction; TRP channel; Fatty acid analysis. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300010 |
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| Mata,Renata Alves da; Roque,Francisco; Tidon,Rosana. |
| The Paranã Valley, located in the Central Brazil Plateau, within the domain of the Cerrado biome, is frequently cited as a center of endemism and diversity. Nonetheless, this region is poorly known, mainly considering its invertebrate fauna. Here, drosophilid flies were used as biological tools to contribute to a broader inventory, whose goals were mapping the Cerrado biodiversity and identifying areas to be conserved. Three previously unsampled areas in the Paranã Valley were sampled. Amongst the 12,297 specimens collected 45 species were identified, which represents 50% of the drosophilid species previously recorded in the Cerrado. Moreover, this sampling presented eight new occurrences for the biome (Drosophila annulosa, D. calloptera, D. papei, D.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Brazilian savanna; Central Brazil Plateau; Conservation; Drosophila; Inventory. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000100006 |
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| Lopes,E.S.S.; Araujo,H.M.. |
| Activation of NFkappaB plays a pivotal role in many cellular processes such as inflammation, proliferation and apoptosis. In Drosophila, nuclear translocation of the NFkappaB-related transcription factor Dorsal is spatially regulated in order to subdivide the embryo into three primary dorsal-ventral (DV) domains: the ventral presumptive mesoderm, the lateral neuroectoderm and the dorsal ectoderm. Ventral activation of the Toll receptor induces degradation of the IkappaB-related inhibitor Cactus, liberating Dorsal for nuclear translocation. In addition, other pathways have been suggested to regulate Dorsal. Signaling through the maternal BMP member Decapentaplegic (Dpp) inhibits Dorsal translocation along a pathway parallel to and independent of Toll. In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: JAK kinase; Drosophila; Embryonic patterning; Hopscotch; NFkappaB. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004001200006 |
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| Pimenta,Raphael S.; Alves,Priscila D. D.; Almeida,Gabriel M. F.; Silva,Juliana F.M; Morais,Paula B.; Corrêa Jr.,Ary; Rosa,Carlos A.. |
| We studied the yeast communities associated with fruits, mushrooms, tree exudates, and flies of the genus Drosophila, in two Atlantic Rain Forest fragments in state of Minas Gerais, Brazil. A total of 456 samples were collected from Rio Doce State Park and 142 from Ecological Station of Universidade Federal de Minas Gerais. From these samples, 608 yeast isolates were obtained, belonging to 71 different species. Among the yeasts isolated from Rio Doce State Park, 17 isolates were recovered from fruits, 12 from mushrooms, 13 from tree exudates, and 299 from Drosophila spp. In the Ecological Station of Universidade Federal de Minas Gerais, 24 isolates were recovered from fruits and 243 from Drosophila spp. Distinct communities of yeast were observed in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Yeast communities; Drosophila; Fruits; Mushrooms; Tree exudates; Atlantic Rain Forests. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000100015 |
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| Castro,Juliana P. de; Setta,Nathalia de; Carareto,Claudia Marcia A.. |
| Information about the distribution and insertion numbers of many transposable elements is restricted to few species of Drosophila, although these elements are widely distributed throughout the genus. The aim of this work was to describe the distribution and insertion numbers of four retrotransposons (copia, gypsy, micropia, I) and four transposons (hobo, mariner, Minos and Bari-1) in the saltans group of Drosophila. Our data shows that, except for mariner, all the other elements are widespread within the saltans group and show variable insertion numbers of up to 24 copies. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophila; Genomic insertion; Saltans group; Retrotransposons; Transposons. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200029 |
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| Registros recuperados: 47 | |
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