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| Registros recuperados: 15 | |
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| 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 |
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| 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 |
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| 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... |
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Palavras-chave: D-loop; Haplotype lineage analysis; Mitochondrial DNA. |
| Ano: 2002 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4066 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 15 | |
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