Consulta: subjectFacets:"Drosophila"
Registros recuperados: 46
Data/hora: 11/06/2024 13:22:31

Tracking the Genetic Effects of Global Warming: Drosophila and Other Model Systems
Provedor de dados: 7
Autores: Scheiner, Samuel M; National Science Foundation; sscheine@nsf.gov.
Current efforts to study the biological effects of global change have focused on ecological responses, particularly shifts in species ranges. Mostly ignored are microevolutionary changes. Genetic changes may be at least as important as ecological ones in determining species' responses. In addition, such changes may be a sensitive indicator of global changes that will provide different information than that provided by range shifts. We discuss potential candidate systems to use in such monitoring programs. Studies of Drosophila subobscura suggest that its chromosomal inversion polymorphisms are responding to global warming. Drosophila inversion polymorphisms can be useful indicators of the effects of climate change on populations and ecosystems. Other...
Tipo: Peer-Reviewed Reports
Palavras-chave: Biodiversity conservation; Biological indicator; Chromosomal inversion polymorphism; Climate change; Drosophila; Evolutionary ecology; Genetic diversity; Global warming; Microevolution.
Ano: 1998

A note on the population genetic consequences of delayed larval development in insects
Provedor de dados: 74
Autores: Salles,Marcos Mattoso de; Otto,Paulo A.
Observations by Dobzhansky's group in the 1940s suggesting that the presence of recessive genotypes could account for lower larval developmental rates in Drosophila melanogaster were not confirmed at the time and all subsequent investigations on this subject focused on the analysis of ecological models based on competition among pre-adult individuals. However, a paper published in this journal in 1991 eventually confirmed the finding made by Dobzhansky and his co-workers. In this report, we provide a theoretical analysis of the population genetic effects of a delay in the rate of larval development produced by such a genetic mechanism.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Difference and differential equations; Drosophila; Dynamic systems; Larval development; Population genetics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000300019

Distribution and conservation of the transposable element gypsy in drosophilid species
Provedor de dados: 74
Autores: Herédia,Fabiana; Loreto,Elgion Lúcio S.; Valente,Vera Lúcia S.
In an attempt to understand the dynamics of transposable elements (T'S) in the genome of host species, we investigated the distribution, representativeness and conservation of DNA sequences homologous to the Drosophila melanogaster gypsy retrotransposon in 42 drosophilid species. Our results extended the knowledge about the wide distribution of gypsy in the genus Drosophila, including several Neotropical species not previously studied. The gypsy-like sequences showed high divergence compared to the D. melanogaster gypsy element. Furthermore, the conservation of the restriction sites between gypsy sequences from phylogenetically unrelated species pointed to a more complex evolutionary picture, which includes the possibility of the horizontal transfer events...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Retrotransposon; Gypsy; Southern blot; PCR.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000100023

Genetic components affecting embryonic developmental time of Drosophila melanogaster
Provedor de dados: 74
Autores: Nascimento,Jurema Cruz do; Cruz,Ivana Beatrice Mânica da; Monjeló,Luiz Alberto; Oliveira,Alice Kalisz de.
The developmental time of the embryonic stage of Drosophila melanogaster was 21.66% faster and 14.75% slower than controls in populations selected for fast and slow developmental speed, respectively. The genetic model with two main loci with dominant and additive effect added to maternal effect and their relevant interactions can explain 96% of the phenotypic variability in the embryonic developmental time according to 14 crossing progenies involving fast and slow flies.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Developmental rate; Embryo; Drosophila.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200008

Drosophila relics hobo and hobo-MITEs transposons as raw material for new regulatory networks
Provedor de dados: 74
Autores: 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

Transposable elements from the mesophragmatica group of Drosophila
Provedor de dados: 74
Autores: Germanos,Erika; Mota,Nina R.; Loreto,Elgion L.S.
Transposable elements (TEs) are middle repetitive DNA sequences classified into families according to their sequence similarities, such elements can playing an important role in the evolutionary process of their host genomes. There are many reports on the distribution of TEs in the fruit fly genus Drosophila, although there is relatively little information relating to the Neotropical mesophragmatica group of Drosophila, probably the most typical cluster of species occurring almost exclusively in the Andes mountains. Dot Blot and PCR analyses was used to study the distribution of some TEs (I, mariner, hobo, gypsy, Tom/17.6, micropia and P elements) within the mesophragmatica group of Drosophila. We found gypsy elements in all the mesophragmatica group...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Mesophragmatica; Phylogenetic distribution; Transposable elements.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000400026

Evolution of DNMT2 in drosophilids: Evidence for positive and purifying selection and insights into new protein (pathways) interactions
Provedor de dados: 74
Autores: Vieira,Gilberto Cavalheiro; D’Ávila,Marícia Fantinel; Zanini,Rebeca; Deprá,Maríndia; da Silva Valente,Vera Lúcia.
Abstract The DNA methyltransferase 2 (DNMT2) protein is the most conserved member of the DNA methyltransferase family. Nevertheless, its substrate specificity is still controversial and elusive. The genomic role and determinants of DNA methylation are poorly understood in invertebrates, and several mechanisms and associations are suggested. In Drosophila, the only known DNMT gene is Dnmt2. Here we present our findings from a wide search for Dnmt2 homologs in 68 species of Drosophilidae. We investigated its molecular evolution, and in our phylogenetic analyses the main clades of Drosophilidae species were recovered. We tested whether the Dnmt2 has evolved neutrally or under positive selection along the subgenera Drosophila and Sophophora and investigated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Dnmt2; Positive selection; Epigenetic; Positive-destabilizing selection.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000200215

Geographic polymorphism of P element in populations of Drosophila sturtevanti
Provedor de dados: 74
Autores: Almeida,Luciane M. de; Langeani,Francisco; Carareto,Claudia M.A.
The aim of this report was to detect full-sized P element sequences in eight strains of Drosophila sturtevanti populations from distant geographic regions and to assess the structural geographic variation among P element sequences. PCR analysis confirmed the presence of a putative complete P element in all strains. Southern blot analysis indicated bands shared by all strains, and bands restricted to geographically related strains. Parsimony analysis corroborated the hybridization pattern that reflected the geographic relationships.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canonical P elements; Drosophila; P element polymorphism; Saltans group; Transposable elements.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000200010

Enhanced tethered-flight duration and locomotor activity by overexpression of the human gene SOD1 in Drosophila motorneurons
Provedor de dados: 74
Autores: Petrosyan,Agavni; Hsieh,I-Hui; Phillips,John P.; Saberi,Kourosh.
Mutation of the human gene superoxide dismutase (hSOD1) is associated with the fatal neurodegenerative disease familial amyotrophic lateral sclerosis (Lou Gehrig’s disease). Selective overexpression of hSOD1 in Drosophila motorneurons increases lifespan to 140% of normal. The current study was designed to determine resistance to lifespan decline and failure of sensorimotor functions by overexpressing hSOD1 in Drosophila‘s motorneurons. First, we measured the ability to maintain continuous flight and wingbeat frequency (WBF) as a function of age (5 to 50 days). Flies overexpressing hSOD1 under the D42-GAL4 activator were able to sustain flight significantly longer than controls, with the largest effect observed in the middle stages of life. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavioral genetics; Superoxide dismutase; Drosophila; Motorneuron; Longevity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000100107

Distribution and insertion numbers of transposable elements in species of the Drosophila saltans group
Provedor de dados: 74
Autores: 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

small ORFs: A new class of essential genes for development
Provedor de dados: 74
Autores: Albuquerque,João Paulo; Tobias-Santos,Vitória; Rodrigues,Aline Cáceres; Mury,Flávia Borges; Fonseca,Rodrigo Nunes da.
Genes that contain small open reading frames (smORFs) constitute a new group of eukaryotic genes and are expected to represent 5% of the Drosophila melanogaster transcribed genes. In this review we provide a historical perspective of their recent discovery, describe their general mechanism and discuss the importance of smORFs for future genomic and transcriptomic studies. Finally, we discuss the biological role of the most studied smORF so far, the Mlpt/Pri/Tal gene in arthropods. The pleiotropic action of Mlpt/Pri/Tal in D. melanogaster suggests a complex evolutionary scenario that can be used to understand the origins, evolution and integration of smORFs into complex gene regulatory networks.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tribolium; Mlpt; Pri; Tarsal-less; Drosophila.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000300278

Chromosomal phylogeny of the Drosophila fasciola species subgroup revisited (Diptera, Drosophilidae)
Provedor de dados: 74
Autores: Diniz,Nilda Maria; Sene,Fabio Melo.
The analysis of polytene chromosomes in 26 strains of seven species in the Drosophila fasciola subgroup, from several locations in Brazil, in addition to strains of two species belonging to the Drosophila mulleri subgroup (D. aldrichi and D. mulleri), enabled us to determine that the 3c inversion found in the latter species differ in one of its break points from that present in the species of the fasciola subgroup. Therefore, a change in the mulleri complex denomination from inversion 3c to inversion 3u is proposed. Accordingly, the fasciola subgroup is no longer a lesser phylogenetic part within the mulleri subgroup. Rather, it is directly related to the likely ancestor of the repleta group, called Primitive I. This information removes the main obstacle...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Chromosome phylogeny; Repleta group; Fasciola subgroup; Chromosome inversions.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000400016

Dmp53, basket and drICE gene knockdown and polyphenol gallic acid increase life span and locomotor activity in a Drosophila Parkinson's disease model
Provedor de dados: 74
Autores: 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 &lt; 0.05; log-rank test) and locomotor activity (p &lt; 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

Drosophilidae (Diptera) associated to fungi: differential use of resources in anthropic and Atlantic Rain Forest areas
Provedor de dados: 76
Autores: 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

Seasonal variation in natural populations of Drosophila spp. (Diptera) in two woodlands in the State of São Paulo, Brazil
Provedor de dados: 76
Autores: Torres,Felipe Rafael; Madi-Ravazzi,Lilian.
The composition and the seasonality of the natural populations of Drosophila species in relation to the climatic variables temperature and rainfall were analyzed from September 1998 through October 1999 by monthly collections, in two woodlands in the Northwest of the State of São Paulo, Brazil. The diversity dominance component curves were inclined, reflecting low diversity and high dominance of few species. Among the 25 species recorded, Drosophila sturtevanti Duda, 1927 was the most frequent and abundant. On the opposite to data in literature, D. paranaensis Barros, 1950 abundance and frequency were greater than those from D. mercatorum Patterson &amp;amp; Wheeler, 1942. A positive correlation between abundance and rainfall was observed for D. nebulosa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Abiotic factors; Seasonality; Drosophila; Biodiversity.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000400008

Assemblages of drosophilids (Diptera, Drosophilidae) in mangrove forests: community ecology and species diversity
Provedor de dados: 76
Autores: 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

Two new species of the Drosophila serido sibling set (Diptera, Drosophilidae)
Provedor de dados: 76
Autores: Tidon-Sklorz,Rosana; Sene,Fábio M.
Drosophila antonietae sp. nov. and D. gouveai sp. nov. are members of the D. buzzatii cluster of the D. repleta species group of the genus Drosophila. They can be distinguished from their cryptic species, D. borborema Vilela &amp;amp; Sene, 1977, D. koepferae Fontdevila &amp;amp; Wasserman, 1988, D. serido Vilela &amp;amp; Sene, 1977, and D. seriema Tidon-Sklorz &amp;amp; Sene, 1995 by morphological, genetic and ecological criteria.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Buzzatii cluster; Serido sibling set; Taxonomy; Neotropical.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000100014

Seasonal dynamics of a drosophilid (Diptera) assemblage and its potencial as bioindicator in open environments
Provedor de dados: 76
Autores: Bizzo,Luís; Gottschalk,Marco S; Toni,Daniela C. De; Hofmann,Paulo R. P.
Drosophila Fallen, 1823 (Diptera, Drosophilidae) is for long a well-established model organism for genetics and evolutionary research. The ecology of these flies, however, has only recently been better studied. Recent papers show that Drosophila assemblies can be used as bioindicators of forested environment degradation. In this work the bioindicator potential of drosophilids was evaluated in a naturally opened environment, a coastal strand-forest (restinga). Data from nine consecutive seasonal collections revealed strong temporal fluctuation pattern of the majority of Drosophila species groups. Drosophila willistoni group was more abundant at autumns, whereas D. cardini and D. tripunctata groups were, respectively, expressive at winters and springs, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Seasonality; Bioindicators; Restinga; Brazil.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000300001

Temperature, urbanization and body color polymorphism in South Brazilian populations of Drosophila kikkawai (Diptera, Drosophilidae)
Provedor de dados: 76
Autores: Costa,Bartira E. Pinheiro da; Rohde,Cláudia; Valente,Vera Lúcia da Silva.
Body color polymorphism of urban populations of cosmopolite fly Drosophila kikkawai Burla, 1954 was investigated in relation to its possible association with environmental temperature. Samples of D. kikkawai were collected in spring, summer, autumn and winter between 1987 to 1988, in zones with different levels of urbanization in the southern Brazilian city of Porto Alegre, Rio Grande do Sul. A clear association was observed between darker flies and both seasons with low temperatures and areas of low urbanization (where temperature is generally lower than in urbanized areas). Results of preliminary laboratory experiments involving six generations of flies grown in chambers at temperatures of 17º and 25ºC confirmed this tendency to a relationship between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Urban populations; Color polymorphism; Temperature.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212003000400005

Variation in synonymous codon use and DNA polymorphism within the Drosophila genome
Provedor de dados: 5
Autores: Bierne, Nicolas; Eyre Walker, A.
A strong negative correlation between the rate of amino-acid substitution and codon usage bias in Drosophila has been attributed to interference between positive selection at nonsynonymous sites and weak selection on codon usage. To further explore this possibility we have investigated polymorphism and divergence at three kinds of sites: synonymous, nonsynonymous and intronic in relation to codon bias in D. melanogaster and D. simulans. We confirmed that protein evolution is one of the main explicative parameters for interlocus codon bias variation (r(2) similar to 40%). However, intron or synonymous diversities, which could have been expected to be good indicators of local interference [here defined as the additional increase of drift due to selection on...
Tipo: Text
Palavras-chave: Substitution rate; Selective constraints; Linkage; Hill Robertson interference; GC content; Drosophila; Diversity; Codon usage.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-4221.pdf

Study of the Drosophilidae (Diptera) communities on Atlantic Forest islands of Santa Catarina State, Brazil
Provedor de dados: 82
Autores: 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

Taxonomic survey of Drosophilidae (Diptera) from mangrove forests of Santa Catarina Island, Southern Brazil
Provedor de dados: 82
Autores: 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

Changes in Brazilian Drosophilidae (Diptera) assemblages across an urbanisation gradient
Provedor de dados: 82
Autores: Gottschalk,Marco S.; De Toni,Daniela C.; Valente,Vera L.S.; Hofmann,Paulo R.P.
The present study aims to characterise the assemblages of Drosophilidae sampled from four sites subject to different levels of urbanisation, in the city of Florianópolis, South Brazil. Five samples were collected between August 2000 and August 2001 and five between August 2002 and August 2003 in each site. A gradual change in the dominant species was observed in the urbanisation gradient, with an increase in relative abundance of exotic species in urban areas. Among the native species, the relative abundance of Drosophila capricorni Dobzhansky &amp;amp; Pavan had an expressive decrease. In the other hand the richness in the low urbanisation site increased, probably due to the presence of urban gardens. The diversity index did not vary significantly among...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Zaprionus; Ecology; Diversity; Richness.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000600005

The flower flies and the unknown diversity of Drosophilidae (Diptera): a biodiversity inventory in the Brazilian fauna
Provedor de dados: 84
Autores: 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

Mycophagous Drosophilidae (Diptera) guild and their hosts in the Brazilian Amazon
Provedor de dados: 84
Autores: Santa-Brígida,Rosângela; Wartchow,Felipe; Medeiros,Priscila Sanjuan; Gottschalk,Marco Silva; Martins,Marlúcia Bonifácio; Carvalho,Claudio José Barros de.
Abstract The composition and potential hosts of mycophagous Drosophilidae from a section of the Brazilian Amazon forest in the Caxiuanã National forest were investigated. Sampling was performed in three different periods at long the wet season (January (beginning) and July (end) 2013 and May (middle) 2014). The samples were collected from existing trails by actively searching for fungal fruiting bodies where Drosophilidae were present. We present composition and richness analysis over two years of sampling sampling Drosophilidae and Fungi. We evaluate sampling completeness using asymptotic species richness estimators. Out of 159 fruiting body samples and 64 fungal species, 5,124 drosophilids belonging to 55 species and 5 genera were collected. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agaricales; Basidiomycota; Drosophila; Fungal composition; Hirtodrosophila; Insects; Mycodrosophila; Polyporaceae; Species richness; Zygothrica.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100220

The drosophilid fauna (Diptera, Drosophilidae) of the transition between the Pampa and Atlantic Forest Biomes in the state of Rio Grande do Sul, southern Brazil: first records
Provedor de dados: 84
Autores: 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

Breeding sites of drosophilids (Diptera) in the Brazilian Savanna. I. Fallen fruits of Emmotum nitens (Icacinaceae), Hancornia speciosa (Apocynaceae) and Anacardium humile (Anacardiaceae)
Provedor de dados: 92
Autores: 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

Biogeographical aspects of drosophilids (Diptera, Drosophilidae) of the Brazilian savanna
Provedor de dados: 92
Autores: Chaves,Natália Barbi; Tidon,Rosana.
Some species of drosophilids have been intensely studied, especially in the areas of genetics and molecular biology. However, little is known about their ecology and biogeography. Here, we revise the records of Drosophilidae species in the Cerrado domain, in order to organize the available information and to recognize patterns of geographic distribution and endemism. The 43 sampled sites in this domain reveal 100 species of drosophilids (10 of them exotic to the Neotropical region), distributed in eight genera. The collections were concentrated mainly in the States of Goiás (including the Federal District) and Minas Gerais. Serra do Cipó is the site with the highest richness of these insects. Of the 90 neotropical species found in the Cerrado, 77 also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Exotic species; Neotropical species; Pattern of distribution; Zaprionus.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262008000300005

Spatial and temporal dynamics of drosophilid larval assemblages associated to fruits
Provedor de dados: 92
Autores: 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

Identification key for drosophilid species (Diptera, Drosophilidae) exotic to the Neotropical Region and occurring in Brazil
Provedor de dados: 92
Autores: Yuzuki,Keven; Tidon,Rosana.
Abstract Thirteen species of drosophilid exotic to the Neotropical Region are recorded in Brazil, and some of them are highly invasive and threaten significantly fruit cultures. We provide an illustrated key for identifying these species, and briefly discuss their taxonomic status, distribution, and occurrence in the Neotropics. The key should not only support newcomers to the study of Drosophila but also facilitate their identification by those interested in insects associated with cultivated areas.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological invasions; Drosophila; Invasive species; Scaptodrosophila; Zaprionus.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262020000100205

Phylogenetic relationships among four species of the guarani group of Drosophila (Diptera, Drosophilidae) as inferred by molecular and morphological analyses
Provedor de dados: 92
Autores: 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 &amp;amp; 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

Drosophilids (Diptera) from an Atlantic Forest Area in Santa Catarina, Southern Brazil
Provedor de dados: 92
Autores: Döge,Jonas S.; Valente,Vera L. S.; Hofmann,Paulo R. P.
The present work aims at knowing the faunal composition of drosophilids in forest areas of southern Brazil. Besides, estimation of species richness for this fauna is briefly discussed. The sampling were carried out in three well-preserved areas of the Atlantic Rain Forest in the State of Santa Catarina. In this study, 136,931 specimens were captured and 96.6% of them were identified in the specific level. The observed species richness (153 species) is the largest that has been registered in faunal inventories conducted in Brazil. Sixty-three of the captured species did not fit to the available descriptions, and we believe that most of them are non-described species. The incidence-based estimators tended to give rise to the largest richness estimates while...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Rain Forest; Drosophila; Neotropic; Species richness estimation; Taxonomic survey.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262008000400013

Aspectos del polimorfismo genético en Drosophila pseudoobscura, D. willistoni y D. nebulosa
Provedor de dados: 109
Autores: Salceda Sacanelles,Víctor Manuel.
En México el polimorfismo cromosómico en poblaciones naturales de Drosophila se estudió en D. pseudoobscura, D. willistoni y D. nebulosa. En la primera, más ampliamente analizada, se reconocen 27 inversiones correspondientes al 67.5% de la variabilidad para esta característica, identificando cuatro razas. Diferentes recolectas detectaron nuevas inversiones que permitieron reestructurar el árbol filogenético para la característica. Con base en el alto número de estas nuevas inversiones y otras evidencias se postuló como arreglo ancestral el Tree Line (TL) y se sugiere como centro de origen de la especie la región en que colindan los estados de Michoacán y Zacatecas. Se encontraron gradientes geográficos para algunas inversiones tanto en localidades...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Polimorfismo cromosómico; Poblaciones naturales; México.
Ano: 2008
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122008000200006

Inventario taxonómico de drosophilidae (Diptera) en el Parque Nacional Yasuni, Amazonia Ecuatoriana
Provedor de dados: 36
Autores: 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 &amp;amp; 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

EFECTO DE DENSIDAD POBLACIONAL DE HUEVOS SOBRE VIABILIDAD Y TIEMPO DE DESARROLLO DE Drosophila melanogaster (DROSOPHILIDAE)
Provedor de dados: 37
Autores: 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&gt;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

Detection of P element transcripts in embryos of Drosophila melanogaster and D. willistoni
Provedor de dados: 42
Autores: 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

Ubiquitous overexpression of a transgene encoding the extracellular portion of the Drosophila Roughest-Irregular Chiasm C protein induces early embryonic lethality
Provedor de dados: 42
Autores: MODA,LIVIA; MACHADO,RICARDO C.; RAMOS,RICARDO GUELERMAN P.
The cell adhesion molecule Rst-irreC is a transmembrane glycoprotein of the immunoglobulin superfamily involved in several important developmental processes in Drosophila, including axonal pathfinding in the optic lobe and programmed cell death and pigment cell differentiation in the pupal retina. As an initial step towards the "in vivo'' functional analysis of this protein we have generated transgenic fly stocks carrying a truncated cDNA construct encoding only the extracellular domain of Rst-IrreC under the transcriptional control of the heat shock inducible promoter hsp70. We show that heat-shocking embryos bearing the transgene during the first 8hs of development lead to a 3-4 fold reduction in their viability compared to wild type controls. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Transgenic organisms; Cell adhesion; Immunoglobulin superfamily.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000300011

"In vivo" toxicity of a truncated version of the Drosophila Rst-IrreC protein is dependent on the presence of a glutamine-rich region in its intracellular domain
Provedor de dados: 42
Autores: MACHADO,RICARDO C.; PEREIRA,RODRIGO N.R.; COSTA,MARA S.A.; RAMOS,RICARDO GUELERMAN P.
The roughest-irregular chiasm C ( rst-irreC) gene of Drosophila melanogaster encodes a transmembrane glycoprotein containing five immunoglobulin-like domains in its extracellular portion and an intracytoplasmic tail rich in serine and threonine as well some conserved motifs suggesting signal transduction activity. In the compound eye, loss-of-function rst-irreC mutants lack the characteristic wave of programmed cell death happening in early pupa and which is essential for the elimination of the surplus interommatidial cells. Here we report an investigation on the role played by the Rst-irreC molecule in triggering programmed cell death. "In vivo" transient expression assays showed that deletion of the last 80 amino acids of the carboxyl terminus produces a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drosophila; Rst-irreC; Glutamine-rich repeats; Cell death.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000200007

Fatty acid composition of Drosophila photoreceptor light-sensitive microvilli
Provedor de dados: 48
Autores: 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

The S6 kinase Signaling Pathway In The Control of Development and Growth
Provedor de dados: 48
Autores: 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 (&lt;A HREF="#20"&gt;Gressner and Wool, 1974&lt;/A&gt;), it only recently has been implicated in the translational up-regulation of mRNAs coding for the components of protein synthetic apparatus (&lt;A HREF="#15"&gt;Fumagalli and Thomas, 2000&lt;/A&gt;). 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 (&lt;A HREF="#32"&gt;Meyuhas et al., 1996&lt;/A&gt;). 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

The balance between GMD and OFUT1 regulates Notch signaling pathway activity by modulating Notch stability
Provedor de dados: 48
Autores: 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

Drosophilids (Insecta, Diptera) of the Paranã Valley: eight new records for the Cerrado biome
Provedor de dados: 49
Autores: 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

The maternal JAK/STAT pathway of Drosophila regulates embryonic dorsal-ventral patterning
Provedor de dados: 56
Autores: 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

Yeast communities in two Atlantic rain Forest fragments in Southeast Brazil
Provedor de dados: 58
Autores: 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

Effect of single cell protein as a protein source in Drosophila culture
Provedor de dados: 58
Autores: Uysal,Handan; Aydogan,M. Nuri; Algur,O. Faruk.
The effects of biomass of Phanerochaete chrysosporium at various concentrations (1; 2.5; 5; 10; 25; 50; 75 and 100%) on the growth of Drosophila melanogaster have been investigated. Biomass was used as a protein source instead of corn flour in Standard Drosophila Medium(SDM). It was seen that it causes increments in both body size of larvae and the numbers of offsprings, especially at higher concentrations (50, 75 and 100%). At the application of 100% concentration, metamorphosis accelerated and was completed one day before the control. There were phenotipic abnormalities in both control (0.64%) and applications with low concentrations (0.02-0.19%), while they were not observed at the application of 100% concentration
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Single cell protein; Toxicity; Drosophila; Phanerochaete chrysosporium.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000400007

Protective effect of luteolin on the transgenic Drosophila model of Parkinson’s disease
Provedor de dados: 60
Autores: Siddique,Yasir Hasan; Jyoti,Smita; Naz,Falaq.
In the present study we have studied the effect of 25, 50, 75 and 100 µM of luteolin on the transgenic Drosophila expressing human alpha synuclein. The doses of luteolin were established in diet and the PD flies were allowed to feed on it for 24 days. After 24 days of exposure the flies were assayed for climbing assay, oxidative stress markers, caspase-3 &amp; 9 activity and dopamine content. The immunohistochemistry was also performed on the brain sections for the activity of tyrosine hydroxylase. The exposure of luteolin showed a dose dependent delay in the loss of climbing ability and activity, reduction in oxidative stress markers, caspase-3&amp;9 activities and results in an increase in the dopamine content. The results obtained for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Luteolin; Parkinson’s disease; Drosophila; Oxidative stress.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502018000300627