Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 17
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Diversidade genética de raças asininas criadas no Brasil, baseada na análise de locos microssatélites e DNA mitocondrial. Repositório Alice
ALMEIDA, L. D. de.
O melhoramento genético e, por conseguinte, o progresso da pecuária está intimamente correlacionado com a variabilidade genética das espécies animais. Desta forma, a perda dessa variabilidade poderá restringir as opções, não previstas, para os trabalhos de melhoramento animal. O estudo da diversidade e da variabilidade genética da espécie asinina poderá auxiliar nas tomadas de decisão a respeito de quais populações devem ou não ser conservadas, quando os recursos são escassos, evitando a duplicação de esforços na manutenção das amostras. Da mesma forma, poderá ainda evitar que populações de uma mesma raça, que possuam características particulares, sejam descartadas durante o processo de conservação. Este trabalho teve como objetivo estimar a variabilidade...
Tipo: Tese/dissertação (ALICE) Palavras-chave: Estrutura genética; D-loop; STR; Variabilidade genética; Genética populacional; Jumento.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/513365
Imagem não selecionada

Imprime registro no formato completo
Genetic evidence for a species complex within the piranha Serrasalmus maculatus (Characiformes, Serrasalmidae) from three Neotropical river basins based on mitochondrial DNA sequences Genet. Mol. Biol.
Bignotto,Thaís Souto; Maniglia,Thiago Cintra; Gomes,Vivian Nunes; Oliveira,Isadora Janolio de; Agostinho,Carlos Sérgio; Prioli,Sônia Maria Alves Pinto; Prioli,Alberto José.
Abstract Mitochondrial molecular markers (DNA sequences of D-loop, cytochrome b and cytochrome c oxidase I) were employed to characterize populations of the piranha Serrasalmus maculatus from Upper Paraná, Upper Paraguay and Tocantins River basins. D-loop sequences of S. maculatus population from Paraná-Paraguay River basin exhibited tandem repeats of short motifs (12 base pairs) and variable numbers depending on specimens, accounting for length variation. Concatenated mitochondrial sequences suggested that S. maculatus encompasses different mitochondrial DNA lineages. Although sampling was restricted to three river basins, phylogenetic analysis clearly indicated that the species currently recognized as S. maculatus presents high genetic variability....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cryptic species; Species delimitation; D-loop; Cytochrome b; Cytochrome c oxidase I.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000100801
Imagem não selecionada

Imprime registro no formato completo
Genetic structuring of Salminus hilarii Valenciennes, 1850 (Teleostei: Characiformes) in the rio Paraná basin as revealed by microsatellite and mitochondrial DNA markers Neotropical Ichthyology
Silva,Juliana Viana da; Hallerman,Eric M.; Orfão,Laura Helena; Hilsdorf,Alexandre Wagner Silva.
Genetic variation of Salminus hilarii was assessed by screening microsatellite loci and mitochondrial D-loop DNA across four sampling in the upper rio Paraná basin of Brazil. Genetic diversity - measured as mean expected heterozygosity (0.904) and mean number of alleles across populations (13.7) - was reasonably high. Differentiation of microsatellite allele frequencies among populations was shown to be low but significant by AMOVA Φ ST (0.0192), and high by D EST (0.185). D-loop variation was high, with haplotypic diversity of 0.950 and nucleotide diversity of 0.011. Mitochondrial DNA-based estimates for population differentiation were high, with an overall Φ ST of 0.173. The results of tests of nuclear and mitochondrial variation yielded no unequivocal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: D-loop; River disruption; STR; Tabarana.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300547
Imagem não selecionada

Imprime registro no formato completo
Identification of Astyanax altiparanae (Teleostei, Characidae) in the Iguaçu River, Brazil, based on mitochondrial DNA and RAPD markers Genet. Mol. Biol.
Prioli,Sônia M.A.P.; Prioli,Alberto J.; Júlio Jr.,Horácio F.; Pavanelli,Carla S.; Oliveira,Alessandra V. de; Carrer,Helaine; Carraro,Dirce M.; Prioli,Laudenir M..
Astyanax fishes are among the most important food-web components of South America rivers. In the Iguaçu River basin, the Astyanax genus is represented mainly by endemic species. For millions of years, that hydrographic basin has been geographically isolated from the Paraná River basin by the Iguaçu Falls. Recently, a species from the Upper Paraná River basin identified as Astyanax bimaculatus was revised and described as a new species named Astyanax altiparanae Garutti & Britski, 2000. Fauna endemism and geographic isolation triggered interest in investigations to evaluate the identification and genetic relatedness among two A. altiparanae populations from the Upper Paraná River basin and the population identified as A. bimaculatus in the Iguaçu...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astyanax; Fish; D-loop; Control region; Mitochondrial DNA; RAPD.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000400011
Imagem não selecionada

Imprime registro no formato completo
Invasive north american Beaver (Castor canadensis): the distribution of mitochondrial variation across the archipelago of Tierra del Fuego Mastozool. neotrop.
Fasanella,Mariana; Poljak,Sebastián; Lizarralde,Marta S..
In 1946 twenty-five pairs of Castor canadensis were introduced into the Isla Grande of Tierra del Fuego (Argentina). Thanks both to environmental conditions favorable for colonization and an absence of effective control measures, today the estimated abundance is about 100 000 individuals. We have conducted molecular analysis of beavers from three areas of the Archipelago of Tierra del Fuego, in order to characterize the genetic structure of the invasive population. Our results from AMOVA (Fst= 0.104, p < 0.001) suggest that geographical barriers and large distances could limit gene flow among the populations. In the Tierra del Fuego National Park subpopulation, we found a positive and significant autocorrelation out to 800 m (r = 0.193, p = 0.003) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: D-loop; Invasive species; Spatial genetic structure; Tierra del Fuego.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832010000100005
Imagem não selecionada

Imprime registro no formato completo
Lineage Classification of Canine Inheritable Disorders Using Mitochondrial DNA Haplotypes OAK
TAKAHASI, Shoko; MIYAHARA, Kazuro; ISHIKAWA, Hirosi; ISHIGURO, Naotaka; SUZUKI, Mitsuyoshi; 宮原, 和郎; 鈴木, 三義.
To estimate the maternal effects of dog breeds using mitochondrial DNA(mtDNA) haplotypes in the dogs with several clinical disorders, 600 base pairs of mtDNA D-loop region were amplified from 365 dogs and were determined for mtDNA sequences. The diversity of the 600-bp sequences was classified into 64 haplotypes, including 46 newly discovered haplotypes, and the haplotypes were grouped into four clusters I to IV. Lineage analysis using the mtDNA haplotype indicated that each dog breed genetically comprises one or a few mtDNA haplotypes. When the relationship between genetic background and occurrences of clinical diseases was estimated, canine lineage analysis using mtDNA haplotype revealed that the disorders distributed in the dominant mtDNA haplotypes of...
Palavras-chave: D-loop; Haplotype lineage analysis; Mitochondrial DNA.
Ano: 2002 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4066
Imagem não selecionada

Imprime registro no formato completo
Low levels of genetic diversity depicted from mitochondrial DNA sequences in a heavily exploited marine fish (Cynoscion acoupa, Sciaenidae) from the Northern coast of Brazil Genet. Mol. Biol.
Rodrigues,Rosa; Schneider,Horacio; Santos,Simôni; Vallinoto,Marcelo; Sain-Paul,Ulrich; Sampaio,Iracilda.
The acoupa weakfish (Cynoscion acoupa - Sciaenidae) is a marine species of croaker with estuarine-dependent behavior, found in the western Atlantic from Panama to Argentina. It is one of the most exploited food fish on the northern coast of Brazil. In this study, DNA sequences were determined from the entire control region (D-loop) of the mitochondrial genome of 297 individuals collected during seven different months between December 2003 and August 2005 on the northern coast of Brazil (Amapá and Pará). Genetic variability expressed by haplotype (h = 0,892) and nucleotide (pi = 0,003) diversities were low compared to other heavily exploited marine fish species from the western Atlantic and eastern Asia. AMOVA depicted a lack of genetic structuring among...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cynoscion acoupa; Acoupa weakfish; Sciaenidae; Low genetic diversity; Mitochondrial DNA; D-loop.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000300015
Imagem não selecionada

Imprime registro no formato completo
Mitochondrial control region haplotypes of the South American sea lion Otaria flavescens (Shaw, 1800) BJMBR
Artico,L.O.; Bianchini,A.; Grubel,K.S.; Monteiro,D.S.; Estima,S.C.; de Oliveira,L.R.; Bonatto,S.L.; Marins,L.F..
The South American sea lion, Otaria flavescens, is widely distributed along the Pacific and Atlantic coasts of South America. However, along the Brazilian coast, there are only two nonbreeding sites for the species (Refúgio de Vida Silvestre da Ilha dos Lobos and Refúgio de Vida Silvestre do Molhe Leste da Barra do Rio Grande), both in Southern Brazil. In this region, the species is continuously under the effect of anthropic activities, mainly those related to environmental contamination with organic and inorganic chemicals and fishery interactions. This paper reports, for the first time, the genetic diversity of O. flavescens found along the Southern Brazilian coast. A 287-bp fragment of the mitochondrial DNA control region (D-loop) was analyzed. Seven...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Otaria flavescens; MtDNA; D-loop; Genetic variability; New haplotypes.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000900002
Imagem não selecionada

Imprime registro no formato completo
Mitochondrial D-loop sequence variation among Central Javanese Duck in Indonesia Animal Sciences
Susanti, R; Iswari, Retno Sri; Fibriana, Fidia; Sari, Retno Ika.
 This study was realized to determine the genetic variation of Central Javanese duck based on the D-Loop mtDNA gene. D-loop gene was amplified using PCR technique by specific primer and sequenced using dideoxy termination method with ABI automatic sequencer. ClustalW from MEGA-6.06 software program was employed for multiple alignments of nucleotide sequences. Nucleotide sequences of D-loop gene of mtDMA from the Central Javanese duck were aligned together with other Anas isolates from Genbank using ClustalW of MEGA-6.06 program. The estimation of genetic distance and phylogenetic tree construction were analyzed by Neighbor-Joining method, whereas the calculation of distance matrix was performed using Kimura 2-parameter. Multiple alignments obtained were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetics; Animal sciences mtDNA; D-loop; Central Javanese duck; Genetic variation..
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34352
Imagem não selecionada

Imprime registro no formato completo
Mitochondrial DNA D-loop sequence variation among 5 maternal lines of the Zemaitukai horse breed Genet. Mol. Biol.
Cothran,E. Gus; Juras,Rytis; Macijauskiene,Vale.
Genetic variation in Zemaitukai horses was investigated using mitochondrial DNA (mtDNA) sequencing. The study was performed on 421 bp of the mitochondrial DNA control region, which is known to be more variable than other sections of the mitochondrial genome. Samples from each of the remaining maternal family lines of Zemaitukai horses and three random samples for other Lithuanian (Lithuanian Heavy Draught, Zemaitukai large type) and ten European horse breeds were sequenced. Five distinct haplotypes were obtained for the five Zemaitukai maternal families supporting the pedigree data. The minimal difference between two different sequence haplotypes was 6 and the maximal 11 nucleotides in Zemaitukai horse breed. A total of 20 nucleotide differences compared...
Tipo: Info:eu-repo/semantics/article Palavras-chave: D-loop; Equus caballus; Phylogeny; Polymorphism.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000500006
Imagem não selecionada

Imprime registro no formato completo
Mitochondrial DNA variation in wild populations of Leporinus elongatus from the Paraná River basin Genet. Mol. Biol.
Martins,Cesar; Wasko,Adriane P.; Oliveira,Claudio; Foresti,Fausto.
Leporinus elongatus, a fish species widely distributed throughout the Paraná River basin in South America, is an important fishery resource and a valuable species in aquaculture programs. Despite its great economic importance, several wild populations have been suffering a drastic reduction. The comprehension of its population structure represents an important step for the conservation of these organisms in natural environments, and also for the selection of wild stocks to be used in hatchery programs. In order to understand the genetic-population structure of L. elongatus, D-loop mitochondrial DNA analyses were applied in six wild populations of the species. The results were used to estimate the levels of within and among population genetic variability....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation genetics; D-loop; Genetic variability; Leporinus elongatus; MtDNA.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100006
Imagem não selecionada

Imprime registro no formato completo
Origem e diversidade mitocondrial de raças asininas criadas no Brasil. Repositório Alice
ALMEIDA, L. D. de; MARIANTE, A. da S.; ALBUQUERQUE, M. do S. M..
bitstream/item/173205/1/Palmira-2009-p.-395-a-398.pdf
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Racas crioulas; Diversidade haplotípica; D-loop; Jumento.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/748891
Imagem não selecionada

Imprime registro no formato completo
Phylogeny of the Serrasalmidae (Characiformes) based on mitochondrial DNA sequences Genet. Mol. Biol.
Ortí,Guillermo; Sivasundar,Arjun; Dietz,Kelly; Jégu,Michel.
Previous studies based on DNA sequences of mitochondrial (mt) rRNA genes showed three main groups within the subfamily Serrasalminae: (1) a "pacu" clade of herbivores (Colossoma, Mylossoma, Piaractus); (2) the "Myleus" clade (Myleus, Mylesinus, Tometes, Ossubtus); and (3) the "piranha" clade (Serrasalmus, Pygocentrus, Pygopristis, Pristobrycon, Catoprion, Metynnis). The genus Acnodon was placed as the sister taxon of clade (2+3). However, poor resolution within each clade was obtained due to low levels of variation among rRNA gene sequences. Complete sequences of the hypervariable mtDNA control region for a total of 45 taxa, and additional sequences of 12S and 16S rRNA from a total of 74 taxa representing all genera in the family are now presented to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Piranhas; Pacus; D-loop; Phylogeny; Bayesian inference.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200030
Imagem não selecionada

Imprime registro no formato completo
Populations analysis of the Brazilian Sharpnose Shark Rhizoprionodon lalandii (Chondrichthyes: Carcharhinidae) on the São Paulo coast, Southern Brazil: inferences from mt DNA sequences Neotropical Ichthyology
Mendonça,Fernando Fernandes; Oliveira,Claudio; Gadig,Otto Bismarck Fazzano; Foresti,Fausto.
Sharks of the genus Rhizoprionodon can be considered some of the most important predators along the trophic coastal marine ecosystems and represent an important economic resource for the small-scale fisheries, especially on the Brazilian coastline. In order to analyze the population structure of the shark Rhizoprionodon lalandii of São Paulo, Southeastern coast of Brazil, levels of genetic diversity were identified by nucleotide sequence analyses of the mitochondrial DNA control region. The results obtained from this study present moderate values of haplotype diversity and low nucleotide diversity. Although the AMOVA tests (ΦST = 0.08394, P < 0.01) had shown slightly differences among the studied samples, evidence for the occurrence of population...
Tipo: Info:eu-repo/semantics/article Palavras-chave: D-loop; Haplotypes; Mitochondrial control region; Shark conservation.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000200012
Imagem não selecionada

Imprime registro no formato completo
Sistemática, taxonomía y domesticación de alpacas y llamas: nueva evidencia cromosómica y molecular RChHN
MARÍN,JUAN C; ZAPATA,BEATRIZ; GONZÁLEZ,BENITO A; BONACIC,CRISTIAN; WHEELER,JANE C; CASEY,CIARA; BRUFORD,MICHAEL W; PALMA,R. EDUARDO; POULIN,ELIE; ALLIENDE,M. ANGÉLICA; SPOTORNO,ÁNGEL E.
Existen cuatro especies de camélidos sudamericanos, dos de ellos silvestres, guanaco (Lama guanicoe) y vicuña (Vicugna vicugna), y dos formas domésticas, alpaca (Lama pacos) y llama (Lama glama), cuyo origen ha sido objeto de debate. En el presente estudio la variación en el patrón de bandas G de los cromosomas de llamas y alpacas y la secuencia de dos genes mitocondriales han sido usados para estudiar el origen y la clasificación de llamas y alpacas. Patrones de bandas cromosómicas similares fueron observados en las cuatro especies de Lamini, incluso similares a los descritos para camello, Camelus bactrianus. Sin embargo, se encontraron finas y consistentes diferencias en los brazos cortos del cromosoma 1, permitiendo separar a camellos, guanacos y...
Tipo: Journal article Palavras-chave: Camelidae; Lama pacos; Vicugna pacos; Lama glama; Cromosomas; Citocromo b; D-loop.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2007000200001
Imagem não selecionada

Imprime registro no formato completo
Tocantins river as an effective barrier to gene flow in Saguinus niger populations Genet. Mol. Biol.
Vallinoto,Marcelo; Araripe,Juliana; Rego,Péricles S. do; Tagliaro,Claudia H.; Sampaio,Iracilda; Schneider,Horacio.
The Saguinus represent the basal genus of the Callitrichinae subfamily. Traditionally this genus is divided into three groups: Hairy, Mottled and Bare-face, however, molecular data failed to validate these groups as monophyletic units, as well as raised some subspecies to the species status. This is the case of the former subspecies Saguinus midas midas and S. midas niger, which are now considered as different species. In the present study, we sequenced a portion of the D-loop mtDNA region in populations from the East bank of the Xingu and from both banks of the Tocantins river, in order to test the effectiveness of large rivers as barriers to the gene flow in Saguinus. According to our results, the populations from the East and West banks of the Tocantins...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Primates; Saguinus niger; D-loop; MtDNA; Tocantins river.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200005
Imagem não selecionada

Imprime registro no formato completo
Wide-range genetic connectivity of Coney, Cephalopholis fulva (Epinephelidae), through oceanic islands and continental Brazilian coast Anais da ABC (AABC)
Souza,Allyson S. de; Dias Júnior,Eurico A.; Galetti Jr,Pedro M.; Machado,Erik G.; Pichorim,Mauro; Molina,Wagner F..
The Epinephelidae form a group of species of high biological and economical interests. It´s phylogeographic patterns are not well known especially the distributed populations in the western region of the Atlantic Ocean. Among the representatives is a small species called Cephalopholis fulva, Coney, which presents a wide geographical distribution, polychromia, hermaphroditism and is quickly becoming a large target for the exploration of commercial fishing. The genetic and historical demography were obtained through the partial sequence analysis of Control Region from six locations on the coastline of Brazil from the northeast coast to the southwest coast, including the oceanic islands of Rocas Atoll and Fernando de Noronha Archipelago. The analyzed samples...
Tipo: Info:eu-repo/semantics/article Palavras-chave: D-loop; Glaciation; MtDNA; Panmixia; Phylogeography.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100121
Registros recuperados: 17
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional