|
|
|
| Registros recuperados: 46 | |
|
|
| Toni,Daniela C. de; Gottschalk,Marco S.; Cordeiro,Juliana; Hofmann,Paulo P.R.; Valente,Vera L.S.. |
| A study of the community dynamics of Drosophilidae was carried out in six insular communities and two others on the mainland. Seasonal collections were carried out throughout two years in Santa Catarina State, southern of Brazil. The diversity index calculations show high values when compared with temperate climate communities. The sites on the mainland (Serra do Tabuleiro) presented the highest diversity, which was measured by the Diversity Index (H'). These sites are covered by primary Atlantic Forest and theoretically should have a higher variation of ecological niches. A dendogram showing the similarity between the communities, calculated by Morisita Index, points to a level of similarity equal to 60% for all communities. In this diagram, we can see... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophila; Biodiversity; Ecology. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000300004 |
| |
|
|
| Schmitz,Hermes J.; Valente,Vera L.S.; Hofmann,Paulo R.P.. |
| Assemblages of drosophilids have been characterised in several environments of the Brazilian territory, like the Atlantic Rain Forest, urban areas, cerrados, the Amazon Forest, and others. The present survey is the first attempt to characterise the fauna of Drosophilidae in mangrove forests, an environment typical of tropical coasts worldwide. Twenty-eight samples were collected from the three main mangrove forests of Santa Catarina Island, southern Brazil, using banana-baited traps hung in trees. Samples were taken in January (summer), April (autumn), July (winter) and October (spring) between July 2002 and July 2005. In total, 82,942 specimens of drosophilids were caught, belonging to 69 species of six genera - Amiota Loew, Drosophila Fallén, Leucophenga... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophila; Biodiversity; Fauna of mangroves; Insect assemblage; Zaprionus. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000100007 |
| |
|
| |
|
|
| Schmitz,Hermes José; Valente,Vera Lúcia da Silva. |
| Abstract Diptera is a megadiverse order, reaching its peak of diversity in Neotropics, although our knowledge of dipteran fauna from this region is grossly lacking. This applies even to the most studied families, such as Drosophilidae. Despite its prominence, most aspects of the biology of these insects are still poorly understood, especially those linked to natural communities. Field studies on drosophilids are highly biased towards fruit-breeding species. Flower-breeding drosophilids, however, are worldwide distributed, especially in tropical regions, although being mostly neglected. The present paper shows the results of a biodiversity inventory of flower-breeding drosophilids carried out in several localities in Brazil, based on samples of 125 plant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophila; Flower-breeding drosophilids; Flower visitors; Host plants; Niche. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100245 |
| |
|
| |
|
|
| Hochmüller,Cleverton J.C.; Lopes-da-Silva,Marcelo; Valente,Vera L.S.; Schmitz,Hermes J.. |
| Although studies on drosophilid (Diptera, Drosophilidae) assemblages have become relatively abundant in the past decades, many environments remain to be searched. The present study investigates the composition, the species abundances and the richness of the drosophilid assemblages in two localities of the municipality of Cruz Alta, northwestern region of the state of Rio Grande do Sul, a point of contact between the biomes Atlantic Forest and Pampa: (i) an urban area (2007), constituted by a domestic orchard with Citrus trees, and (ii) a forested area, in Centro de Educação, Pesquisa e Proteção Ambiental - CEPPA (2008/2009), of Universidade de Cruz Alta, located in a fragment of riparian forest. Collections were conducted using fermented banana-baited... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophila; Insecta; New records; Neotropical region; Species abundances. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492010001900001 |
| |
|
|
| 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 |
| |
|
| |
|
|
| Mata,Renata Alves da; Valadão,Henrique; Tidon,Rosana. |
| The study of organisms and their resources is critical to further understanding population dynamics in space and time. Although drosophilids have been widely used as biological models, their relationship with breeding and feeding sites has received little attention. Here, we investigate drosophilids breeding in fruits in the Brazilian Savanna, in two contrasting vegetation types, throughout 16 months. Specifically, larval assemblages were compared between savannas and forests, as well as between rainy and dry seasons. The relationships between resource availability and drosophilid abundance and richness were also tested. The community (4,022 drosophilids of 23 species and 2,496 fruits of 57 plant taxa) varied widely in space and time. Drosophilid... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diptera; Diversity; Drosophila; Drosophilidae; Neotropical. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262015000100050 |
| |
|
| |
|
|
| Robe,Lizandra Jaqueline; Silva,Luciano Basso da; Loreto,Elgion Lucio da Silva. |
| Traditionally, the Drosophila guarani species group has been divided into two subgroups: the guarani and the guaramunu subgroups. Two, out of the four species included in this research, are members of the guarani subgroup (D. ornatifrons Duda, 1927 and D. subbadia Paterson & Mainland, 1943) and two are included in the guaramunu subgroup (D. maculifrons Duda, 1927 and D. griseolineata Duda, 1927). However, some authors have suggested that D. maculifrons and D. griseolineata are much closer to some species of the Drosophila tripunctata group than to some of the species of the guarani group. To add new data to the matter under dispute, Polyacrylamide Gel Eletrophoresis (PAGE-SDS) was used for the analysis and comparison of protein composition and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophila; Guarani group; Monophyly; Phylogeny; RAPD. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262002000400004 |
| |
|
| |
|
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
| |
|
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
| Registros recuperados: 46 | |
|
|
|
