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| Registros recuperados: 46 | |
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| Schmitz,Hermes J.; Hofmann,Paulo R. P.; Valente,Vera L. S.. |
| Brazilian fauna of drosophilids has been researched in various ecosystems, but those in mangrove forests remain overlooked in Brazil and elsewhere. The present study attempts to characterise the assemblages of drosophilids of this environment, based on 28 collections taken in three mangrove areas in Santa Catarina Island, southern Brazil. The three mangroves surveyed were different in their surroundings, which varied from highly urbanised areas to conservation areas with natural vegetation. Overall, 69 species were collected, and no remarkable difference was detected in species composition and abundances or in the richness, evenness and heterogeneity between sites. The species abundance distribution observed fitted to a theoretical lognormal distribution... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Biodiversity; Diversity measures; Drosophila; Neotropical region; Source-sink hypothesis. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000200008 |
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| Roque,Francisco; Hay,John Du Vall; Tidon,Rosana. |
| In this study, drosophilids that bred in fruits of three common plant species of the Brazilian Savanna were investigated: Emmotum nitens, Hancornia speciosa and Anacardium humile, along with the temporal and spatial distribution of these insects among fruits obtained from six individuals of E. nitens. Fallen fruits were collected in natural environments, placed on moist sand in individual containers and all drosophilids that emerged from these resources during 15 days were collected, counted and identified. From 3,651 fruits collected (3,435 of E. nitens, 179 of A. humile and 37 of H. speciosa) 4,541 flies emerged and were classified into 19 species of Drosophilidae. Their distribution was unequal among the three resources, also over time, and among the... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Biodiversity; Cerrado biome; Drosophila. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000200016 |
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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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| 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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| Ortega-Arellano,Hector Flavio; Jimenez-Del-Rio,Marlene; Velez-Pardo,Carlos. |
| Understanding the mechanism(s) by which dopaminergic (DAergic) neurons are eroded in Parkinson's disease (PD) is critical for effective therapeutic strategies. By using the binary tyrosine hydroxylase (TH)-Gal4/UAS-X RNAi Drosophila melanogaster system, we report that Dmp53, basket and drICE gene knockdown in dopaminergic neurons prolong life span (p < 0.05; log-rank test) and locomotor activity (p < 0.05; χ² test) in D. melanogaster lines chronically exposed to (1 mM) paraquat (PQ, oxidative stress (OS) generator) compared to untreated transgenic fly lines. Likewise, knockdown flies displayed higher climbing performance than control flies. Amazingly, gallic acid (GA) significantly protected DAergic neurons, ameliorated life span, and climbing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Basket; Dmp53; Drice; Drosophila; Paraquat. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000400020 |
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| Loreto,Elgion L.S.; Deprá,Maríndia; Diesel,José F.; Panzera,Yanina; Valente-Gaiesky,Vera Lucia S.. |
| Abstract Hypermutable strains of Drosophila simulans have been studied for 20 years. Several mutants were isolated and characterized, some of which had phenotypes associated with alteration in development; for example, showing ectopic legs with eyes being expressed in place of antennae. The causal agent of this hypermutability is a non-autonomous hobo-related sequence (hoboVA). Around 100 mobilizable copies of this element are present in the D. simulans genome, and these are likely mobilized by the autonomous and canonical hobo element. We have shown that hoboVA has transcription factor binding sites for the developmental genes, hunchback and even-skipped, and that this transposon is expressed in embryos, following the patterns of these genes. We suggest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hobo; Transposable elements; Cis-regulatory sequences; Drosophila. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000200198 |
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| Gottschalk,Marco S; Bizzo,Luís; Döge,Jonas S; Profes,Marcos S; Hofmann,Paulo R. P; Valente,Vera L. S. |
| This study investigates the Drosophilidae species associated to fruiting bodies of fungi in forested and anthropized environments of the Atlantic Rain Forest Biome, in south and southeastern Brazil. We collected samples of imagoes flying over and emerging from fruiting bodies of species of five fungi families, in six collection sites. We obtained 18 samples, from which emerged 910 drosophilids of 31 species from the genera Drosophila Fallen, 1823, Hirtodrosophila Duda, 1923, Leucophenga Mik, 1886, Mycodrosophila Oldenberg, 1914, Scaptomyza Hardy, 1849, Zaprionus Coquillett, 1901 and Zygothrica Wiedemann, 1830. The Drosophila species collected on fungi, as well as Zaprionus indianus Gupta, 1970, had previously been recorded colonizing fruits, demonstrating... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophila; Mycophagous insects; Feeding sites; Breeding sites. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000400016 |
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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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| 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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| 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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| Registros recuperados: 46 | |
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