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	Provedor de dados Genet. Mol. Biol. (4) Autor Arias,Maria Cristina (4) Francisco,Flávio de Oliveira (2) Santiago,Leandro Rodrigues (2) Silvestre,Daniela (2) Brito,Rute Magalhães (1) Dowton,Mark (1) Françoso,Elaine (1) Mais... Palavra-chave MtDNA (3) Melipona bicolor (2) Meliponini (2) Cerrado (1) Eusociality (1) Gene order (1) Gene rearrangements (1) Genetic variability (1) Microsatellites (1) Mitochondrial genome (1) Mitogenomics (1) Partamona mulata (1) Philopatry (1) Population genetics (1) Social insects (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2013 (2) 2008 (1) 2006 (1) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Molecular genetic diversity in populations of the stingless bee Plebeia remota: A case study Genet. Mol. Biol. Francisco,Flávio de Oliveira; Santiago,Leandro Rodrigues; Arias,Maria Cristina. Genetic diversity is a major component of the biological diversity of an ecosystem. The survival of a population may be seriously threatened if its genetic diversity values are low. In this work, we measured the genetic diversity of the stingless bee Plebeia remota based on molecular data obtained by analyzing 15 microsatellite loci and sequencing two mitochondrial genes. Population structure and genetic diversity differed depending on the molecular marker analyzed: microsatellites showed low population structure and moderate to high genetic diversity, while mitochondrial DNA (mtDNA) showed high population structure and low diversity in three populations. Queen philopatry and male dispersal behavior are discussed as the main reasons for these findings. Tipo: Info:eu-repo/semantics/article Palavras-chave: MtDNA; Meliponini; Microsatellites; Philopatry; Population genetics. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000100017 The mitochondrial genome of the stingless bee Melipona bicolor (Hymenoptera, Apidae, Meliponini): sequence, gene organization and a unique tRNA translocation event conserved across the tribe Meliponini Genet. Mol. Biol. Silvestre,Daniela; Dowton,Mark; Arias,Maria Cristina. At present a complete mtDNA sequence has been reported for only two hymenopterans, the Old World honey bee, Apis mellifera and the sawfly Perga condei. Among the bee group, the tribe Meliponini (stingless bees) has some distinction due to its Pantropical distribution, great number of species and large importance as main pollinators in several ecosystems, including the Brazilian rain forest. However few molecular studies have been conducted on this group of bees and few sequence data from mitochondrial genomes have been described. In this project, we PCR amplified and sequenced 78% of the mitochondrial genome of the stingless bee Melipona bicolor (Apidae, Meliponini). The sequenced region contains all of the 13 mitochondrial protein-coding genes, 18 of 22... Tipo: Info:eu-repo/semantics/article Palavras-chave: Melipona bicolor; Meliponini; Social insects; Mitochondrial genome; Gene rearrangements. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000300010 Very low mitochondrial variability in a stingless bee endemic to cerrado Genet. Mol. Biol. Brito,Rute Magalhães; Francisco,Flávio de Oliveira; Françoso,Elaine; Santiago,Leandro Rodrigues; Arias,Maria Cristina. Partamona mulata is a stingless bee species endemic to cerrado, a severely threatened phytogeographical domain. Clearing for pasture without proper soil treatment in the cerrado facilitates the proliferation of termite ground nests, which are the nesting sites for P. mulata. The genetic consequences of these changes in the cerrado environment for bee populations are still understudied. In this work, we analyzed the genetic diversity of 48 colonies of P. mulata collected throughout the species' distribution range by sequencing two mitochondrial genes, cytochrome oxidase I and cytochrome B. A very low polymorphism rate was observed when compared to another Partamona species from the Atlantic forest. Exclusive haplotypes were observed in two of the five areas... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; MtDNA; Genetic variability; Partamona mulata. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000100018 Mitochondrial tRNA gene translocations in highly eusocial bees Genet. Mol. Biol. Silvestre,Daniela; Arias,Maria Cristina. Mitochondrial gene rearrangement events, especially involving tRNA genes, have been described more frequently as more complete mitochondrial genome sequences are becoming available. In the present work, we analyzed mitochondrial tRNA gene rearrangements between two bee species belonging to the tribes Apini and Meliponini within the "corbiculate Apidae". Eleven tRNA genes are in different genome positions or strands. The molecular events responsible for each translocation are explained. Considering the high number of rearrangements observed, the data presented here contradict the general rule of high gene order conservation among closely related organisms, and also represent a powerful molecular tool to help solve questions about phylogeny and evolution in... Tipo: Info:eu-repo/semantics/article Palavras-chave: MtDNA; Melipona bicolor; Mitogenomics; Gene order; Eusociality. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000300030 Registros recuperados: 4 Primeira ... 1 ... Última

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